Parallel parking is challenge for all drivers say
amateurs or the experts. An automatic car parking system is a
solution to this ordeal. This vehicular technology has been
implemented using many other systems but a cost effective,
simple and accurate solution will be greatly appreciated. This
paper explains in detail a simple and precise autonomous carparking
algorithm for Ackerman steering configuration. A twopart
trajectory-planning algorithm consists of the steering
planning and simple distance calculations. The limits of
vehicle mechanism and drive torque are taken into account.
Simulation results are presented to illustrate the application
of the proposed algorithm. The algorithm uses simple
geometry for its path planning and odometry. The system uses
sonar sensors and wheel encoders for its perception. This
sensed data is interpreted in the processor of the vehicle. As
per the trajectory determined, the vehicle parks itself into
the parking space. Simulation and experiment results shows
that using this algorithm the parking maneuver will become
more safe, efficient and fast.
Automated Parallel Parking Using Fuzzy Logicguest66dc5f
The document presents an intelligent parallel parking control system for autonomous ground vehicles using fuzzy logic. It describes a three-step parking algorithm and fuzzy controllers developed for each step. The steps include reaching a ready-to-reverse position, reversing the vehicle into the parking space while adjusting orientation, and final orientation adjustment by moving forward. Genetic algorithms were used to fine-tune the fuzzy controllers by optimizing membership functions and scaling factors. Both simulation and experimental results showed the approach effectively maneuvers vehicles into tight parking spaces.
A Design Of Omni-Directional Mobile Robot Based On Mecanum WheelsIJRESJOURNAL
ABSTRACT:As one of the important branch of mobile robotics, wheel mobile robot has long been paid atten tion to by the research people at home and abroad for its high load ability, positioning accuracy, high efficiency, simple control, etc. Mobile robot has close relation to many technologies suc-h as control theory, computer tech nology, sensor technology, etc. Therefore, research on the mobile robot has important significance
This document discusses modeling and simulation of a semi-active suspension system for automobiles using a PID controller in MATLAB Simulink. It presents a quarter car model of a semi-active suspension system and develops state space equations to model vehicle body displacement, acceleration, wheel deflection, and other variables. The system is simulated in Simulink using PID control. Results show the PID controller improves performance over a passive system by reducing peak overshoots and settling times under both step and random road inputs. The semi-active suspension provides better ride quality and vehicle handling than a conventional passive suspension.
IRJET - Model of Four Wheel Steering MechanismIRJET Journal
This document discusses a model of a four wheel steering mechanism. It begins with an introduction to four wheel steering and its benefits over traditional two wheel steering systems, such as improved maneuverability and reduced turning radius. The objectives are then stated as building a physical model of a four wheel steering mechanism and understanding its advantages. The methodology and components of the model are described, including a rack and pinion system to steer the front wheels connected via bevel gears to another rack and pinion to steer the rear wheels. The working principle is explained, with the rear wheels steering in the opposite direction of the front wheels at low speeds for improved cornering, and in the same direction at high speeds for quicker lane changes. Construction details of the physical
This document presents a mathematical model of a vehicle suspension that was developed as a midterm project. It includes:
1) A quarter-car model to simulate the bounce of one wheel over a pothole or bump.
2) A full-car model combining 4 quarter-car models to simulate the bounce of each tire.
3) An extension of the full-car model to simulate pitching of the vehicle body when encountering road variations.
4) Consideration of rolling of the vehicle body when taking turns. Non-linear springs are proposed to improve the model.
Simulation of an Active Suspension Using PID ControlSuzana Avila
The document simulates an active vehicle suspension using PID control. It builds a quarter car model and analyzes the controllability and observability. Numerical simulations show the active suspension with PID controller improves performance over the passive suspension by reducing displacement peaks and settling times for step, harmonic, and noise road profiles. The active suspension improves comfort but has higher manufacturing costs than passive suspensions.
controlling the vibration of automobile suspension system using pid controllersiva kumar
This document presents a MATLAB/Simulink project that models and simulates an active automobile suspension system using a PID controller to reduce vibration and improve ride comfort. The author develops a quarter-car model to represent the vehicle dynamics, including sprung mass, suspension components, and disturbance from the road. A Simulink model is created and the PID controller is tuned to actively control the suspension system based on sensor feedback. Simulation results show the integrated system response is improved significantly with the PID controller compared to without it. The goal is to both enhance passenger comfort and increase vehicle stability by minimizing vibration effects on the suspension.
Navigation and Trajectory Control for Autonomous Robot/Vehicle (mechatronics)Mithun Chowdhury
The document is a presentation about navigation and trajectory control for autonomous vehicles. It was presented by two students from the University of Trento in Italy.
The presentation introduces mobile robot design considerations including the interrelation between tasks, environments, kinematic models, path/trajectory planning, and high-level and low-level control. It explains that the robot task and environment must be identified first and the kinematic model selected based on this. Path planning is then needed to generate admissible trajectories that satisfy the kinematic constraints. High-level control executes tasks and trajectories while low-level control handles velocity commands.
It also explains concepts like holonomic and non-holonomic constraints, accessibility spaces, and maneuvers
Automated Parallel Parking Using Fuzzy Logicguest66dc5f
The document presents an intelligent parallel parking control system for autonomous ground vehicles using fuzzy logic. It describes a three-step parking algorithm and fuzzy controllers developed for each step. The steps include reaching a ready-to-reverse position, reversing the vehicle into the parking space while adjusting orientation, and final orientation adjustment by moving forward. Genetic algorithms were used to fine-tune the fuzzy controllers by optimizing membership functions and scaling factors. Both simulation and experimental results showed the approach effectively maneuvers vehicles into tight parking spaces.
A Design Of Omni-Directional Mobile Robot Based On Mecanum WheelsIJRESJOURNAL
ABSTRACT:As one of the important branch of mobile robotics, wheel mobile robot has long been paid atten tion to by the research people at home and abroad for its high load ability, positioning accuracy, high efficiency, simple control, etc. Mobile robot has close relation to many technologies suc-h as control theory, computer tech nology, sensor technology, etc. Therefore, research on the mobile robot has important significance
This document discusses modeling and simulation of a semi-active suspension system for automobiles using a PID controller in MATLAB Simulink. It presents a quarter car model of a semi-active suspension system and develops state space equations to model vehicle body displacement, acceleration, wheel deflection, and other variables. The system is simulated in Simulink using PID control. Results show the PID controller improves performance over a passive system by reducing peak overshoots and settling times under both step and random road inputs. The semi-active suspension provides better ride quality and vehicle handling than a conventional passive suspension.
IRJET - Model of Four Wheel Steering MechanismIRJET Journal
This document discusses a model of a four wheel steering mechanism. It begins with an introduction to four wheel steering and its benefits over traditional two wheel steering systems, such as improved maneuverability and reduced turning radius. The objectives are then stated as building a physical model of a four wheel steering mechanism and understanding its advantages. The methodology and components of the model are described, including a rack and pinion system to steer the front wheels connected via bevel gears to another rack and pinion to steer the rear wheels. The working principle is explained, with the rear wheels steering in the opposite direction of the front wheels at low speeds for improved cornering, and in the same direction at high speeds for quicker lane changes. Construction details of the physical
This document presents a mathematical model of a vehicle suspension that was developed as a midterm project. It includes:
1) A quarter-car model to simulate the bounce of one wheel over a pothole or bump.
2) A full-car model combining 4 quarter-car models to simulate the bounce of each tire.
3) An extension of the full-car model to simulate pitching of the vehicle body when encountering road variations.
4) Consideration of rolling of the vehicle body when taking turns. Non-linear springs are proposed to improve the model.
Simulation of an Active Suspension Using PID ControlSuzana Avila
The document simulates an active vehicle suspension using PID control. It builds a quarter car model and analyzes the controllability and observability. Numerical simulations show the active suspension with PID controller improves performance over the passive suspension by reducing displacement peaks and settling times for step, harmonic, and noise road profiles. The active suspension improves comfort but has higher manufacturing costs than passive suspensions.
controlling the vibration of automobile suspension system using pid controllersiva kumar
This document presents a MATLAB/Simulink project that models and simulates an active automobile suspension system using a PID controller to reduce vibration and improve ride comfort. The author develops a quarter-car model to represent the vehicle dynamics, including sprung mass, suspension components, and disturbance from the road. A Simulink model is created and the PID controller is tuned to actively control the suspension system based on sensor feedback. Simulation results show the integrated system response is improved significantly with the PID controller compared to without it. The goal is to both enhance passenger comfort and increase vehicle stability by minimizing vibration effects on the suspension.
Navigation and Trajectory Control for Autonomous Robot/Vehicle (mechatronics)Mithun Chowdhury
The document is a presentation about navigation and trajectory control for autonomous vehicles. It was presented by two students from the University of Trento in Italy.
The presentation introduces mobile robot design considerations including the interrelation between tasks, environments, kinematic models, path/trajectory planning, and high-level and low-level control. It explains that the robot task and environment must be identified first and the kinematic model selected based on this. Path planning is then needed to generate admissible trajectories that satisfy the kinematic constraints. High-level control executes tasks and trajectories while low-level control handles velocity commands.
It also explains concepts like holonomic and non-holonomic constraints, accessibility spaces, and maneuvers
PNEUMATIC VEHICLE ACTIVE SUSPENSION SYSTEM USING PID CONTROLLERTushar Tambe
The slide contains the simulation of pneumatic active suspension behavior on different road surface. These results shows the active suspension with controllers works effectively,if feedback loop is provided.
Comparative Analysis for NN-Based Adaptive Back-stepping Controller and Back-...IJERA Editor
This work primarily addresses the design and implementation of a neural network based controller for the trajectory tracking of a differential drive mobile robot. The proposed control algorithm is an NN-based adaptive controller which tunes the gains of the back-stepping controller online according to the robot reference trajectory and its initial posture. In this method, a neural network is needed to learn the characteristics of the plant dynamics and make use of it to determine the future inputs that will minimize error performance index so as to compensate the back-stepping controller gains. The advantages and disadvantages of theproposed control algorithms will be discussed in each section with illustrations.Comprehensive system modeling including robot kinematics and dynamics modeling has been done. The dynamic modeling is done using Newtonian and Lagrangian methodologies for nonholonomic systems and the results are compared to verify the accuracy of each method. Simulation of the robot model and different controllers has been done using Matlab and Matlab Simulink.
Autonomous Parallel Parking Methodology for Ackerman Configured VehiclesIDES Editor
Parallel parking is challenge for all drivers
say amateurs or the experts. An automatic car parking
system is a solution to this ordeal. This vehicular
technology has been implemented using many other
sPaud Road, Kothrud, Pune, Maharashtra, India –
411038ystems but a cost effective, simple and accurate
solution will be greatly appreciated. This paper explains
in detail a simple and precise autonomous car-parking
algorithm for Ackerman steering configuration. A twoparttrajectory-
planning algorithm consists of the
steeringplanning and simple distance calculations. The
limits of vehiclemechanism and drive torque are taken
into account.Simulation results are presented to illustrate
theapplication of the proposed algorithm.The algorithm
uses simple geometry for its path planning and odometry.
The system uses sonar sensors and wheel encoders for its
perception. This sensed data is interpreted in the
processor of the vehicle. As per the trajectory
determined, the vehicle parks itself into the parking
space. Simulation and experiment results shows that using
this algorithm the parking maneuver will become more
safe, efficient and fast.
Fuzzy rules incorporated skyhook theory based vehicular suspension design for...IJERA Editor
The vehicle suspension system supports and isolate the vehicle body and payload from road vibrations due to surface roughness by maintaining a controllable damping traction force between tires and road surface. In modern luxury vehicles semi active suspension system are offering both the reliability and accuracy that has enhanced the passenger ride comfort with less power demand. In this paper we have proposed the design of a hybrid control system having a combination of skyhook theory with fuzzy logic control and applied on a semi-active vehicle suspension system for its ride comfort enhancement. A two degree of freedom dynamic model is simulated using Matlab/Simulink for a vehicle equipped with semi-active suspension system with focused on the passenger‟s ride comfort performance.
Team PYREX built a planetary rover called Animus for the 2014 Robo-Ops competition. Animus features a rocker-bogie suspension system with six-wheel drive and four-wheel steering for navigating varied terrain. It is remotely operated via 4G internet connection. Components were selected through analytical and rapid prototyping methods. Key features include a rectangular aluminum chassis, fiberglass rocker-bogie legs, 3D printed tread wheels, 13 servos, 6 motors, sensors, and a lithium battery power supply. The team's goal was to complete objectives while establishing experience for future competitions.
This document compares the performance of passive and semi-active suspension systems using MATLAB/Simulink. It presents a quarter car model with both passive and semi-active suspensions. The semi-active system uses a magneto-rheological (MR) damper modeled by the Bingham model. Simulation results show the sprung mass acceleration is reduced by 93.9% and 63.7% for step and half-sine road inputs respectively with the semi-active system compared to passive. Therefore, the semi-active MR damper provides better ride comfort than the conventional passive damper.
Presentation on four wheel steering systemAbhay Dhalkari
The document discusses four wheel steering systems and their advantages over conventional two wheel steering. It describes the different phases (modes) of a quadra steering system including neutral phase, negative phase, positive phase, and zero steer mode. The four wheel steering system provides improved steering precision and stability during cornering as well as smaller turning radii and safer lane changes compared to two wheel steering. Future advanced four wheel steering systems may be fully electronic and allow for maximum maneuverability.
SIMULTANEOUS OPTIMIZATION OF SEMIACTIVE QUARTER CAR SUSPENSION PARAMETERS USI...ijmech
In present paper, a methodology is presented related to the optimization of semi-active quarter car model
suspension parameters having three degrees of freedom, subjected to bump type of road excitation.
Influence of primary suspension stiffness, primary suspension damping, secondary suspension stiffness and
secondary suspension damping are studied on the passenger ride comfort, taking root mean square (RMS)
values of passenger seat displacement and settling time into account. Semi-active quarter car model
assembled with magneto-rheological (MR) shock absorber is selected for optimization of suspension
parameters using Taguchi method in combination with Grey relational analysis. Confirmatory results with
simulation run indicates that the optimized results of suspension parameters are helpful in achieving the
best ride comfort to travelling passengers in terms of minimization of passenger seat displacement and
settling time values.
Development of An Omniwheel-based Holonomoic Robot Platform for Rough TerrainHillary Green
In this paper, an ongoing effort to develop a robust omnidirectional robotic platform for outdoor operation on non-smooth surfaces is presented. The design of an off-road, low-cost omniwheel is presented along with a suspension system that will allow the platform to traverse rough terrain. A control architecture based on the open-source Robotic Operating System (ROS) is also provided.
Abstract: The design and fabrication of 360 degree wheel rotation vehicle using DC motor and steering is done to reduce time to turn from one direction to other direction. This vehicle can move in all direction at a same position by used of steering, sprocket, DC motor, bearing and chain drive. Main function of this vehicle is easy to move from one direction to other direction. Modern development and economical progression of Indian society resulted in increase of people on railway platform, increase of vehicle on the road, due to space constraints, in hospital is major problem of the country. Present study aims for development of a system to reduce the turning radius of vehicle.
Active suspension system
An active suspension is a type of automotive suspension on a vehicle. It uses an onboard system to control the vertical movement of the vehicle's wheels relative to the chassis or vehicle body rather than the passive suspension provided by large springs where the movement is determined entirely by the road surface. So-called active suspensions are divided into two classes: real active suspensions, and adaptive or semi-active suspensions. While adaptive suspensions only very shock absorber firmness to match changing road or dynamic conditions, active suspensions use some type of actuator to raise and lower the chassis independently at each wheel.
The document describes an All-Terrain Autonomous Vehicle (ATAV) designed and built for a class project. The ATAV uses a tank-style continuous track chassis powered by two motors controlled by an Arduino microcontroller. An ultrasonic sensor mounted on a servo detects obstacles and allows the ATAV to navigate around them to reach a target location. The ATAV was designed in phases, testing the drivetrain, integrating sensors, and adding localization functions to enable autonomous navigation between start and end points while avoiding obstacles. Testing showed the ATAV could successfully detect and maneuver around obstacles to reach its target location.
CPREDICTION OF INVERSE KINEMATICS SOLUTION OF A REDUNDANT MANIPULATOR USING A...Ijripublishers Ijri
In this thesis, a method for forward and inverse kinematics analysis of a 5-DOF and a 7- DOF Redundant manipulator
is proposed. Obtaining the trajectory and computing the required joint angles for a higher DOF robot manipulator is one
of the important concerns in robot kinematics and control. The difficulties in solving the inverse kinematics equations
of these redundant robot manipulator arises due to the presence of uncertain, time varying and non-linear nature of
equations having transcendental functions. In this thesis, the ability of ANFIS is used to the generated data for solving
inverse kinematics problem. A single- output Sugeno-type FIS using grid partitioning has been modeled in this work.
The forward kinematics and inverse kinematics for a 5-DOF and 7-DOF manipulator are analyzed systemically. The Efficiency
of ANFIS can be concluded by observing the surface plot, residual plot and normal probability plot. This current
study in using different nonlinear models for the prediction of the IKs of a 5-DOF and 7-DOF Redundant manipulator
will give a valuable source of information for other modellers.
Keywords: 5-DOF and 7-DOF Redundant Robot Manipulator; Inverse kinematics; ANFIS; Denavit-Harbenterg (D-H)
notation.
Analysis of passive quarter model suspension system; enhanced adaptation to s...Matthew Fenech
The document analyzes and models a passive quarter car suspension system and enhances it with semi-active control. It describes the aims of suspension systems, different types of suspensions, and the scopes and objectives of modeling a passive system and enhancing it with skyhook semi-active control. Simulation results in Simulink show the semi-active system reduces displacement, acceleration, and wheel deflection compared to the passive system for both step and bump inputs.
Quarter model of passive suspension system with simscapeabuamo
The document summarizes key aspects of vehicle suspension systems. It defines a suspension system as using springs and shock absorbers to connect wheels/axles to the vehicle chassis. Suspension systems serve to carry weight, maximize tire traction, provide stability and handling, and ensure passenger comfort by smoothing bumps. Springs absorb shock from bumps by converting it to potential energy, while shock absorbers dissipate shock without causing undue vehicle oscillation. Passive suspensions use traditional springs and dampers, while active suspensions constantly sense the road and adjust components like shock stiffness electronically. Simscape software can be used to model and simulate multi-domain physical systems like vehicle suspensions.
This document summarizes a research article that proposes two types of controllers for an active anti-roll bar system for passenger cars: a self-tuning fuzzy PI-PD controller and a PI-PD-type fuzzy controller. The performances of these controllers are evaluated in simulations and compared to a passive anti-roll bar and a conventional fuzzy PID controller. The PI-PD-type fuzzy controller is found to outperform the others by significantly improving the ride and handling of the simulated passenger car.
The active suspension system with hydraulic actuator for half car model analy...eSAT Publishing House
This document describes the design and simulation of an active suspension system with a hydraulic actuator for a half car model. A PID controller is designed and tuned using three different methods - heuristic tuning, Ziegler-Nichols tuning, and iterative learning algorithm tuning. The half car model and hydraulic actuator are modeled and simulated in MATLAB Simulink. Simulation results show that the PID controller tuned with the iterative learning algorithm provides the best ride quality performance compared to the other tuning methods or a passive suspension, reducing the body displacement under various road disturbances.
IRJET- Influence of Tire Parameters of a Semi-Trailer Truck on Road Surfa...IRJET Journal
The document analyzes the influence of tire parameters on road surface friendliness for a semi-trailer truck. A 12 degree-of-freedom half-dynamic vehicle model is established under random road excitation. Dynamic load coefficient (DLC) is used as an objective function to evaluate road surface friendliness. The model is simulated in Matlab/Simulink. Tire stiffness and damping coefficients are analyzed individually to determine their effect on DLC values. Results show that increased tire stiffness decreases vehicle ride comfort and road surface friendliness as DLC values increase with higher stiffness. The study provides a basis for designing semi-trailer truck dynamic systems.
This document is a graduation project submitted by Hüseyin Eren MEŞELİ to the Department of Automotive Engineering at OKAN UNIVERSITY in partial fulfillment of a Bachelor of Science degree. The project proposes a method for active vibration control in a vehicle suspension system using a linear actuator to improve ride comfort and safety. It develops a 2 degree of freedom quarter car model and designs a PID controller to control vehicle vibrations. The performance of the designed controller is evaluated through simulations in Matlab/Simulink.
This document describes an active suspension system for a vehicle. It discusses the objectives and methodology of the project. The methodology section covers properties of suspension systems like spring rate, wheel rate, weight transfer, travel and damping. It describes the fundamental components of any suspension system including springs, dampers and anti-sway bars. It provides diagrams of typical suspension parts and the contact patch deformation during cornering and over bumps. The document outlines the chapters on literature review, objectives, active suspension design and functions. In conclusion, it presents the abstract which states that the active suspension system aims to improve ride comfort and handling by reducing sprung mass acceleration and suspension deflection.
The document discusses trends in electric vehicles and urban mobility. It notes that by 2025 there will be 30 megacities and 15 mega regions globally, and over 40 cities will be "smart" cities. Transportation policies around congestion charging and low emissions zones in large cities will significantly impact electric vehicle adoption. While Europe and North America will have over 50% of smart cities by 2025, China and India will see over 50 new "sustainable" cities developed.
An approach to parallel parking and zero turning radius in automobilesIjrdt Journal
This document summarizes a research paper on an approach to parallel parking and zero turning radius steering in automobiles. The paper proposes a four-wheel steering system that allows a vehicle to turn 360 degrees in place, eliminating the need for multi-point turns when parking or maneuvering in tight spaces. Key points:
- A prototype vehicle was designed and built with independent front and rear wheel steering to demonstrate zero turning radius capability.
- The system allows the vehicle to quickly turn around in a small space by turning the wheels in unconventional directions.
- Testing showed the prototype reduced parking and 360-degree turning times by over 50% compared to conventional steering.
PNEUMATIC VEHICLE ACTIVE SUSPENSION SYSTEM USING PID CONTROLLERTushar Tambe
The slide contains the simulation of pneumatic active suspension behavior on different road surface. These results shows the active suspension with controllers works effectively,if feedback loop is provided.
Comparative Analysis for NN-Based Adaptive Back-stepping Controller and Back-...IJERA Editor
This work primarily addresses the design and implementation of a neural network based controller for the trajectory tracking of a differential drive mobile robot. The proposed control algorithm is an NN-based adaptive controller which tunes the gains of the back-stepping controller online according to the robot reference trajectory and its initial posture. In this method, a neural network is needed to learn the characteristics of the plant dynamics and make use of it to determine the future inputs that will minimize error performance index so as to compensate the back-stepping controller gains. The advantages and disadvantages of theproposed control algorithms will be discussed in each section with illustrations.Comprehensive system modeling including robot kinematics and dynamics modeling has been done. The dynamic modeling is done using Newtonian and Lagrangian methodologies for nonholonomic systems and the results are compared to verify the accuracy of each method. Simulation of the robot model and different controllers has been done using Matlab and Matlab Simulink.
Autonomous Parallel Parking Methodology for Ackerman Configured VehiclesIDES Editor
Parallel parking is challenge for all drivers
say amateurs or the experts. An automatic car parking
system is a solution to this ordeal. This vehicular
technology has been implemented using many other
sPaud Road, Kothrud, Pune, Maharashtra, India –
411038ystems but a cost effective, simple and accurate
solution will be greatly appreciated. This paper explains
in detail a simple and precise autonomous car-parking
algorithm for Ackerman steering configuration. A twoparttrajectory-
planning algorithm consists of the
steeringplanning and simple distance calculations. The
limits of vehiclemechanism and drive torque are taken
into account.Simulation results are presented to illustrate
theapplication of the proposed algorithm.The algorithm
uses simple geometry for its path planning and odometry.
The system uses sonar sensors and wheel encoders for its
perception. This sensed data is interpreted in the
processor of the vehicle. As per the trajectory
determined, the vehicle parks itself into the parking
space. Simulation and experiment results shows that using
this algorithm the parking maneuver will become more
safe, efficient and fast.
Fuzzy rules incorporated skyhook theory based vehicular suspension design for...IJERA Editor
The vehicle suspension system supports and isolate the vehicle body and payload from road vibrations due to surface roughness by maintaining a controllable damping traction force between tires and road surface. In modern luxury vehicles semi active suspension system are offering both the reliability and accuracy that has enhanced the passenger ride comfort with less power demand. In this paper we have proposed the design of a hybrid control system having a combination of skyhook theory with fuzzy logic control and applied on a semi-active vehicle suspension system for its ride comfort enhancement. A two degree of freedom dynamic model is simulated using Matlab/Simulink for a vehicle equipped with semi-active suspension system with focused on the passenger‟s ride comfort performance.
Team PYREX built a planetary rover called Animus for the 2014 Robo-Ops competition. Animus features a rocker-bogie suspension system with six-wheel drive and four-wheel steering for navigating varied terrain. It is remotely operated via 4G internet connection. Components were selected through analytical and rapid prototyping methods. Key features include a rectangular aluminum chassis, fiberglass rocker-bogie legs, 3D printed tread wheels, 13 servos, 6 motors, sensors, and a lithium battery power supply. The team's goal was to complete objectives while establishing experience for future competitions.
This document compares the performance of passive and semi-active suspension systems using MATLAB/Simulink. It presents a quarter car model with both passive and semi-active suspensions. The semi-active system uses a magneto-rheological (MR) damper modeled by the Bingham model. Simulation results show the sprung mass acceleration is reduced by 93.9% and 63.7% for step and half-sine road inputs respectively with the semi-active system compared to passive. Therefore, the semi-active MR damper provides better ride comfort than the conventional passive damper.
Presentation on four wheel steering systemAbhay Dhalkari
The document discusses four wheel steering systems and their advantages over conventional two wheel steering. It describes the different phases (modes) of a quadra steering system including neutral phase, negative phase, positive phase, and zero steer mode. The four wheel steering system provides improved steering precision and stability during cornering as well as smaller turning radii and safer lane changes compared to two wheel steering. Future advanced four wheel steering systems may be fully electronic and allow for maximum maneuverability.
SIMULTANEOUS OPTIMIZATION OF SEMIACTIVE QUARTER CAR SUSPENSION PARAMETERS USI...ijmech
In present paper, a methodology is presented related to the optimization of semi-active quarter car model
suspension parameters having three degrees of freedom, subjected to bump type of road excitation.
Influence of primary suspension stiffness, primary suspension damping, secondary suspension stiffness and
secondary suspension damping are studied on the passenger ride comfort, taking root mean square (RMS)
values of passenger seat displacement and settling time into account. Semi-active quarter car model
assembled with magneto-rheological (MR) shock absorber is selected for optimization of suspension
parameters using Taguchi method in combination with Grey relational analysis. Confirmatory results with
simulation run indicates that the optimized results of suspension parameters are helpful in achieving the
best ride comfort to travelling passengers in terms of minimization of passenger seat displacement and
settling time values.
Development of An Omniwheel-based Holonomoic Robot Platform for Rough TerrainHillary Green
In this paper, an ongoing effort to develop a robust omnidirectional robotic platform for outdoor operation on non-smooth surfaces is presented. The design of an off-road, low-cost omniwheel is presented along with a suspension system that will allow the platform to traverse rough terrain. A control architecture based on the open-source Robotic Operating System (ROS) is also provided.
Abstract: The design and fabrication of 360 degree wheel rotation vehicle using DC motor and steering is done to reduce time to turn from one direction to other direction. This vehicle can move in all direction at a same position by used of steering, sprocket, DC motor, bearing and chain drive. Main function of this vehicle is easy to move from one direction to other direction. Modern development and economical progression of Indian society resulted in increase of people on railway platform, increase of vehicle on the road, due to space constraints, in hospital is major problem of the country. Present study aims for development of a system to reduce the turning radius of vehicle.
Active suspension system
An active suspension is a type of automotive suspension on a vehicle. It uses an onboard system to control the vertical movement of the vehicle's wheels relative to the chassis or vehicle body rather than the passive suspension provided by large springs where the movement is determined entirely by the road surface. So-called active suspensions are divided into two classes: real active suspensions, and adaptive or semi-active suspensions. While adaptive suspensions only very shock absorber firmness to match changing road or dynamic conditions, active suspensions use some type of actuator to raise and lower the chassis independently at each wheel.
The document describes an All-Terrain Autonomous Vehicle (ATAV) designed and built for a class project. The ATAV uses a tank-style continuous track chassis powered by two motors controlled by an Arduino microcontroller. An ultrasonic sensor mounted on a servo detects obstacles and allows the ATAV to navigate around them to reach a target location. The ATAV was designed in phases, testing the drivetrain, integrating sensors, and adding localization functions to enable autonomous navigation between start and end points while avoiding obstacles. Testing showed the ATAV could successfully detect and maneuver around obstacles to reach its target location.
CPREDICTION OF INVERSE KINEMATICS SOLUTION OF A REDUNDANT MANIPULATOR USING A...Ijripublishers Ijri
In this thesis, a method for forward and inverse kinematics analysis of a 5-DOF and a 7- DOF Redundant manipulator
is proposed. Obtaining the trajectory and computing the required joint angles for a higher DOF robot manipulator is one
of the important concerns in robot kinematics and control. The difficulties in solving the inverse kinematics equations
of these redundant robot manipulator arises due to the presence of uncertain, time varying and non-linear nature of
equations having transcendental functions. In this thesis, the ability of ANFIS is used to the generated data for solving
inverse kinematics problem. A single- output Sugeno-type FIS using grid partitioning has been modeled in this work.
The forward kinematics and inverse kinematics for a 5-DOF and 7-DOF manipulator are analyzed systemically. The Efficiency
of ANFIS can be concluded by observing the surface plot, residual plot and normal probability plot. This current
study in using different nonlinear models for the prediction of the IKs of a 5-DOF and 7-DOF Redundant manipulator
will give a valuable source of information for other modellers.
Keywords: 5-DOF and 7-DOF Redundant Robot Manipulator; Inverse kinematics; ANFIS; Denavit-Harbenterg (D-H)
notation.
Analysis of passive quarter model suspension system; enhanced adaptation to s...Matthew Fenech
The document analyzes and models a passive quarter car suspension system and enhances it with semi-active control. It describes the aims of suspension systems, different types of suspensions, and the scopes and objectives of modeling a passive system and enhancing it with skyhook semi-active control. Simulation results in Simulink show the semi-active system reduces displacement, acceleration, and wheel deflection compared to the passive system for both step and bump inputs.
Quarter model of passive suspension system with simscapeabuamo
The document summarizes key aspects of vehicle suspension systems. It defines a suspension system as using springs and shock absorbers to connect wheels/axles to the vehicle chassis. Suspension systems serve to carry weight, maximize tire traction, provide stability and handling, and ensure passenger comfort by smoothing bumps. Springs absorb shock from bumps by converting it to potential energy, while shock absorbers dissipate shock without causing undue vehicle oscillation. Passive suspensions use traditional springs and dampers, while active suspensions constantly sense the road and adjust components like shock stiffness electronically. Simscape software can be used to model and simulate multi-domain physical systems like vehicle suspensions.
This document summarizes a research article that proposes two types of controllers for an active anti-roll bar system for passenger cars: a self-tuning fuzzy PI-PD controller and a PI-PD-type fuzzy controller. The performances of these controllers are evaluated in simulations and compared to a passive anti-roll bar and a conventional fuzzy PID controller. The PI-PD-type fuzzy controller is found to outperform the others by significantly improving the ride and handling of the simulated passenger car.
The active suspension system with hydraulic actuator for half car model analy...eSAT Publishing House
This document describes the design and simulation of an active suspension system with a hydraulic actuator for a half car model. A PID controller is designed and tuned using three different methods - heuristic tuning, Ziegler-Nichols tuning, and iterative learning algorithm tuning. The half car model and hydraulic actuator are modeled and simulated in MATLAB Simulink. Simulation results show that the PID controller tuned with the iterative learning algorithm provides the best ride quality performance compared to the other tuning methods or a passive suspension, reducing the body displacement under various road disturbances.
IRJET- Influence of Tire Parameters of a Semi-Trailer Truck on Road Surfa...IRJET Journal
The document analyzes the influence of tire parameters on road surface friendliness for a semi-trailer truck. A 12 degree-of-freedom half-dynamic vehicle model is established under random road excitation. Dynamic load coefficient (DLC) is used as an objective function to evaluate road surface friendliness. The model is simulated in Matlab/Simulink. Tire stiffness and damping coefficients are analyzed individually to determine their effect on DLC values. Results show that increased tire stiffness decreases vehicle ride comfort and road surface friendliness as DLC values increase with higher stiffness. The study provides a basis for designing semi-trailer truck dynamic systems.
This document is a graduation project submitted by Hüseyin Eren MEŞELİ to the Department of Automotive Engineering at OKAN UNIVERSITY in partial fulfillment of a Bachelor of Science degree. The project proposes a method for active vibration control in a vehicle suspension system using a linear actuator to improve ride comfort and safety. It develops a 2 degree of freedom quarter car model and designs a PID controller to control vehicle vibrations. The performance of the designed controller is evaluated through simulations in Matlab/Simulink.
This document describes an active suspension system for a vehicle. It discusses the objectives and methodology of the project. The methodology section covers properties of suspension systems like spring rate, wheel rate, weight transfer, travel and damping. It describes the fundamental components of any suspension system including springs, dampers and anti-sway bars. It provides diagrams of typical suspension parts and the contact patch deformation during cornering and over bumps. The document outlines the chapters on literature review, objectives, active suspension design and functions. In conclusion, it presents the abstract which states that the active suspension system aims to improve ride comfort and handling by reducing sprung mass acceleration and suspension deflection.
The document discusses trends in electric vehicles and urban mobility. It notes that by 2025 there will be 30 megacities and 15 mega regions globally, and over 40 cities will be "smart" cities. Transportation policies around congestion charging and low emissions zones in large cities will significantly impact electric vehicle adoption. While Europe and North America will have over 50% of smart cities by 2025, China and India will see over 50 new "sustainable" cities developed.
An approach to parallel parking and zero turning radius in automobilesIjrdt Journal
This document summarizes a research paper on an approach to parallel parking and zero turning radius steering in automobiles. The paper proposes a four-wheel steering system that allows a vehicle to turn 360 degrees in place, eliminating the need for multi-point turns when parking or maneuvering in tight spaces. Key points:
- A prototype vehicle was designed and built with independent front and rear wheel steering to demonstrate zero turning radius capability.
- The system allows the vehicle to quickly turn around in a small space by turning the wheels in unconventional directions.
- Testing showed the prototype reduced parking and 360-degree turning times by over 50% compared to conventional steering.
The document describes the design of a zero-turn radius system for a John Deere 5065E tractor. The system uses hydraulic tie rods attached to a double-acting cylinder to enable the rear wheels to rotate independently, allowing the tractor to turn within its own width. Calculations are shown for sizing the steering and tie rod cylinders and rods. The design also incorporates a hydrostatic transmission system to provide infinitely variable speed control for the rear wheels to facilitate zero-turn maneuvers. Performance simulations and a cost analysis are presented to evaluate the technical feasibility and cost-effectiveness of the zero-turn design.
The document describes a proposed design for modifying a John Deere 5065E tractor to achieve zero turn or minimum turning radius capability. Key aspects of the design include:
1. Eliminating the gearbox transmission and differential, and incorporating braking and transmission systems into a hydraulic circuit using two independent hydraulic motors to enable wheels to rotate in the same or opposite directions.
2. Using hydraulically powered tie rods connected to the steering arms to enable the front wheels to turn in opposite directions during zero turn maneuvers while regular steering is maintained via power steering.
3. Employing directional control valves and pressure relief valves to manage fluid flow and pressures to different components including the steering, transmission, and tie rods
four wheel steering configurations with the types of four wheel steering. It also goes through zero turning radius, crab steering, low speed steering and high speed steering.
The 360 degree appraisal system involves evaluating an employee's performance from the perspectives of their superiors, peers, subordinates, self, and customers. It provides a more well-rounded assessment compared to traditional top-down evaluations. Some key advantages include facilitating personal and team development, driving change, and supporting learning organizations. Potential disadvantages include increased bias due to more raters and time/resource intensiveness. Accuracy varies depending on how long the raters have known the employee.
The document discusses 360-degree performance appraisals. It explains that 360-degree appraisals involve collecting feedback about an employee from their manager, peers, direct reports, and customers. The process aims to provide a more comprehensive view of an employee's performance. Some key advantages are that it provides honest assessments from multiple perspectives and helps employees identify strengths and areas for development. However, 360-degree appraisals also have potential disadvantages like bias and lack of validity if not implemented correctly. The document also provides tips for effective implementation and training of appraisers.
This paper presents a hybrid laser guidance technique for autonomous vehicles operating in predefined indoor/outdoor environments. The technique combines inputs from low-cost, low-resolution onboard sensors like encoders and a magnetometer with inputs from a sparsely spaced laser grid that acts as position waypoints. When the vehicle detects a laser, it updates its estimated position to correct for drift from onboard sensor errors. Simulations show the technique reduces position error compared to using only onboard sensors, especially with a higher resolution laser grid and magnetometer. The hybrid approach allows reliable navigation with minimal infrastructure requirements.
This summarizes a document describing a path following control method for experimental car-like robots. It presents a modified proportional control approach that takes a linear combination of proportional gains over cross-track error and heading error as feedback. This method was experimentally tested on a 1/10 scale RC car navigating various paths indoors using real-time motion capture for state feedback. Simulation and experiments showed the combined error approach provided stable control for navigating paths, unlike methods using only one error term, and was able to handle the non-holonomic constraints of the car's motion.
This document describes an Adaptive Overtaking Control and Effective Power Generation (AOC-EPG) system for vehicles. The system uses ultrasonic sensors and a microcontroller to measure distance between vehicles and assist safe overtaking. It communicates vehicle positions using RF transmitters to coordinate multiple vehicles. The system also captures kinetic energy lost during gear shifts using a flywheel and generator to produce electrical power for the vehicle or home. The goal is to prevent accidents during overtaking and generate renewable power from vehicle movement.
A Much Advanced and Efficient Lane Detection Algorithm for Intelligent Highwa...cscpconf
This paper presents a much advanced and efficient lane detection algorithm. The algorithm is based on (ROI) Region of Interest segmentation. In this algorithm images are pre-processed by top-hat transform for de-noising and enhancing contrast. ROI of a test image is then extracted. For detecting lines in the ROI, Hough transform is used. Estimation of the distance between Hough origin and lane-line midpoint is made. Lane departure decision is made based on the difference between these distances. As for the simulation part we have used Matlab software.Experiments show that the proposed algorithm can detect the lane markings accurately and quickly.
IRJET- Business Scaling and Rebalancing in Shared Bicycle SystemsIRJET Journal
This document discusses research on improving bike sharing systems through effective rebalancing operations and business scaling. It presents a framework that uses prediction, clustering algorithms and optimization to determine optimal routes for redistributing bikes between stations to match demand. It first predicts station-level pickup and drop-off demand using historical data and weather information. It then identifies and removes stations that could cause an unbalanced loop. Finally, it uses clustering and optimization to calculate efficient vehicle routes to adjust bike levels at each station. It also describes using location data and k-means clustering to identify optimal new areas to expand bike sharing services.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses vehicle detection using image processing. It describes how sensors can detect vehicles using transducers to detect their presence and convert the output into electrical signals. Sensors are either in-roadway, requiring installation in the road, or over-roadway, mounted above the road. The document focuses on detecting vehicles using image and video processing by extracting the vehicle portion from images in both the spatial and frequency domains, and matching the vehicle's aspect ratio to detect its type. It proposes applications for automated traffic management, toll collection, and security.
DESIGN AND IMPLEMENTATION OF PATH PLANNING ALGORITHM NITISH K
The document discusses the design and implementation of a path planning algorithm for a wheeled mobile robot in a known dynamic environment. It describes using an A* algorithm at a central control station to calculate the shortest path for the robot. If obstacles are detected, the robot's location and obstacle information is sent to update the environment map. The control station then recalculates the new shortest path for the robot. The system was tested experimentally and in simulation, showing it can effectively calculate the shortest path in a dynamic environment.
A Longitudinal Control Algorithm for Smart Cruise Control with Virtual Parame...ijceronline
This paper presents a longitudinal control algorithm for a smart cruise control with virtual parameters in multiple transitions by a driver and traffic conditions. The object is to achieve driver’s comfort and smooth transition with collision prevention for safety in various driving situations. The proposed algorithm consists of an in-path target selection, a generation of virtual parameters, and longitudinal controller for smart cruise control. The in-path target selection algorithm selects an important target which moves on the driving direction of subject vehicle. In addition, it provides the information in order to drive a subject vehicle smoothly and improve safety in various traffic transitions. Finally, smart cruise control controller with virtual parameters computes the desired acceleration. In order to reduce effects of discontinuous changes caused by traffic conditions or drivers such as time gap, set speed, and automation switching, the virtual parameters are applied to longitudinal control algorithm for smart cruise control. The performance and safety benefits of the proposed smart cruise control system are investigated via simulations using real vehicle driving data
Anti Collision For Train using RF PPT.pptxPoojaBan
The document describes the development of an anti-collision detection system for trains. It modifies the throttle and braking systems to integrate the new detection system. The system uses sensors to monitor the distance to the preceding train and automatically adjusts speed and distance to enhance safety. It can reduce speed before a collision if trains get too close. The system helps in congested traffic by controlling both velocity and distance between trains.
Minimum cost implementation of autonomous vehicleeSAT Journals
This document summarizes a research paper on developing a low-cost autonomous vehicle system using an ARM-7 microcontroller. The system consists of electrical and electronic components including batteries, motors, ultrasonic sensors, an LCD display and the ARM-7 microcontroller. It is designed to navigate preset maps and avoid obstacles using the ultrasonic sensors. The vehicle starts upon entering a correct password and then follows the selected map route while checking the sensors for obstacles. If an obstacle is detected, it will turn to avoid it and resume following the map. The system was able to autonomously navigate routes and demonstrate obstacle avoidance abilities.
This document presents information on adaptive cruise control (ACC). It begins with an introduction defining ACC as a system that assists drivers in maintaining a safe distance from the vehicle in front. It then discusses the various sensors used by ACC like radar and LIDAR to detect distance and speed of other vehicles. The document also provides block diagrams illustrating how ACC uses sensor data to control braking and acceleration. It concludes by discussing future advanced versions of ACC that allow vehicle-to-vehicle communication to further coordinate speeds.
Design and implementation of path planning algorithm for wheeled mobile robot...eSAT Journals
Abstract Path planning in mobile robots must ensure optimality of the path. The optimality achieved may be in path, time, energy consumed etc. Path planning in robots also depends on the environment in which it operates like, static or dynamic, known or unknown etc. Global path planning using A* algorithm and genetic algorithm is investigated in this paper. A known dynamic environment, in which a control station will compute the shortest path and communicate to the mobile robot and the mobile robot, will traverse through this path to reach the goal. The control station will keep track of the path traversed by the robot. The mobile robot navigates through the shortest path and if the robot detects any obstacle in the destined path, the mobile robot will update the information about the environment and this information together with the current location will be communicated to the control station. Then the control station, with the updated map of the environment and new starting location and destination recalculates the new shortest path, if any, and will communicate to the mobile robot so that it can reach the destination. The technique has been implemented and tested extensively in real-world experiments and simulation runs. The results demonstrate that the technique effectively calculates the shortest path in known dynamic environment and allows the robot to quickly accomplish the mission.
Design and implementation of path planning algorithm for wheeled mobile robot...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Mathematical modeling and kinematic analysis of 5 degrees of freedom serial l...IJECEIAES
Modeling and kinematic analysis are crucial jobs in robotics that entail identifying the position of the robot’s joints in order to accomplish particular tasks. This article uses an algebraic approach to model the kinematics of a serial link, 5 degrees of freedom (DOF) manipulator. The analytical method is compared to an optimization strategy known as sequential least squares programming (SLSQP). Using an Intel RealSense 3D camera, the colored object is picked up and placed using vision-based technology, and the pixel location of the object is translated into robot coordinates. The LOBOT LX15D serial bus servo controller was used to transmit these coordinates to the robotic arm. Python3 programming language was used throughout the entire analysis. The findings demonstrated that both analytical and optimized inverse kinematic solutions correctly identified colored objects and positioned them in their appropriate goal points.
Modeling and simulation of vehicle windshield wiper system using h infinity l...Mustefa Jibril
Vehicle windshield wiper system increases the driving safety by contributing a clear shot viewing to the
driver. In this paper, modelling, designing and simulation of a vehicle windshield wiper system with robust control
theory is done successfully. H loop shaping and robust pole placement controllers are used to improve the
wiping speed by tracking a reference speed signals. The reference speed signals used in this paper are step and sine
wave signals. Comparison of the H loop shaping and robust pole placement controllers based on the two
reference signals is done and convincing results have been obtained. Finally the comparative results prove the
effectiveness of the proposed H Loop Shaping controller to improve the wiping mechanism for the given two
reference signals.
IRJET- Adaptive Headlights System for Vehicle using ArduinoIRJET Journal
This document describes the design and implementation of an adaptive headlight system for vehicles using Arduino. The system uses ultrasonic sensors and a potentiometer to sense the vehicle's environment and steering position. It controls servo motors connected to the vehicle's headlights to adjust their aim based on road curves and oncoming traffic to improve visibility and prevent glare. The Arduino microcontroller processes sensor data and outputs PWM signals to control the servo motors and vary headlight brightness accordingly. The system was tested experimentally and in simulation, demonstrating its ability to automatically steer headlights along curves and dim them based on proximity of other vehicles.
Simulation design of trajectory planning robot manipulatorjournalBEEI
Robots can be mathematically modeled with computer programs where the results can be displayed visually, so it can be used to determine the input, gain, attenuate and error parameters of the control system. In addition to the robot motion control system, to achieve the target points should need a research to get the best trajectory, so the movement of robots can be more efficient. One method that can be used to get the best path is the SOM (Self Organizing Maps) neural network. This research proposes the usage of SOM in combination with PID and Fuzzy-PD control for finding an optimal path between source and destination. SOM Neural network process is able to guide the robot manipulator through the target points. The results presented emphasize that a satisfactory trajectory tracking precision and stability could be achieved using SOM Neural networking combination with PID and Fuzzy-PD controller.The obtained average error to reach the target point when using Fuzzy-PD=2.225% and when using PID=1.965%.
This summary provides the key details about the document in 3 sentences:
The document describes the design and implementation of a speedometer and speed controller for radio-controlled cars using inexpensive Hall effect sensors to measure speed. It details how the speedometer was validated using a motion capture system and how a PID controller was implemented to regulate the car's speed at a desired level based on feedback from the speedometer. Experimental results showed the speedometer measurements matched the motion capture system and the PID controller was able to regulate the car's speed accurately based on validation tests under no-load conditions.
Vehicle Dynamics and Drive Control for Adaptive Cruise VehiclesIRJET Journal
This document describes an adaptive cruise control system that uses hierarchical control architecture and PID/feedback controllers to maintain a desired distance and speed relative to a preceding vehicle.
The system uses a lower-level controller to compensate for nonlinear vehicle dynamics and track desired acceleration commands from an upper-level controller. The lower-level controller switches between a PID throttle controller and a feedback brake controller. Computer simulations validate that this hierarchical control approach enables the vehicle to accurately track the speed of the preceding vehicle and maintain the desired inter-vehicle distance.
Similar to Autonomous Parallel Parking Methodology for Ackerman Configured Vehicles (20)
Power System State Estimation - A ReviewIDES Editor
This document provides a review of power system state estimation techniques. It discusses both static and dynamic state estimation algorithms. For static state estimation, it covers weighted least squares, decoupled, and robust estimation methods. Weighted least squares is commonly used but can have numerical instability issues. Decoupled state estimation approximates the gain matrix for faster computation. Robust estimation uses M-estimators and other techniques to handle outliers and bad data. Dynamic state estimation applies Kalman filtering, leapfrog algorithms, and other methods to continuously monitor system states over time.
Artificial Intelligence Technique based Reactive Power Planning Incorporating...IDES Editor
This document summarizes a research paper that proposes using artificial intelligence techniques and FACTS controllers for reactive power planning in real-time power transmission systems. The paper formulates the reactive power planning problem and incorporates flexible AC transmission system (FACTS) devices like static VAR compensators (SVC), thyristor controlled series capacitors (TCSC), and unified power flow controllers (UPFC). Evolutionary algorithms like evolutionary programming (EP) and differential evolution (DE) are applied to find the optimal locations and settings of the FACTS controllers to minimize losses and costs. Simulation results on IEEE 30-bus and 72-bus Indian test systems show that UPFC performs best in reducing losses compared to SVC and TCSC.
Design and Performance Analysis of Genetic based PID-PSS with SVC in a Multi-...IDES Editor
Damping of power system oscillations with the help
of proposed optimal Proportional Integral Derivative Power
System Stabilizer (PID-PSS) and Static Var Compensator
(SVC)-based controllers are thoroughly investigated in this
paper. This study presents robust tuning of PID-PSS and
SVC-based controllers using Genetic Algorithms (GA) in
multi machine power systems by considering detailed model
of the generators (model 1.1). The effectiveness of FACTSbased
controllers in general and SVC-based controller in
particular depends upon their proper location. Modal
controllability and observability are used to locate SVC–based
controller. The performance of the proposed controllers is
compared with conventional lead-lag power system stabilizer
(CPSS) and demonstrated on 10 machines, 39 bus New England
test system. Simulation studies show that the proposed genetic
based PID-PSS with SVC based controller provides better
performance.
Optimal Placement of DG for Loss Reduction and Voltage Sag Mitigation in Radi...IDES Editor
This paper presents the need to operate the power
system economically and with optimum levels of voltages has
further led to an increase in interest in Distributed
Generation. In order to reduce the power losses and to improve
the voltage in the distribution system, distributed generators
(DGs) are connected to load bus. To reduce the total power
losses in the system, the most important process is to identify
the proper location for fixing and sizing of DGs. It presents a
new methodology using a new population based meta heuristic
approach namely Artificial Bee Colony algorithm(ABC) for
the placement of Distributed Generators(DG) in the radial
distribution systems to reduce the real power losses and to
improve the voltage profile, voltage sag mitigation. The power
loss reduction is important factor for utility companies because
it is directly proportional to the company benefits in a
competitive electricity market, while reaching the better power
quality standards is too important as it has vital effect on
customer orientation. In this paper an ABC algorithm is
developed to gain these goals all together. In order to evaluate
sag mitigation capability of the proposed algorithm, voltage
in voltage sensitive buses is investigated. An existing 20KV
network has been chosen as test network and results are
compared with the proposed method in the radial distribution
system.
Line Losses in the 14-Bus Power System Network using UPFCIDES Editor
Controlling power flow in modern power systems
can be made more flexible by the use of recent developments
in power electronic and computing control technology. The
Unified Power Flow Controller (UPFC) is a Flexible AC
transmission system (FACTS) device that can control all the
three system variables namely line reactance, magnitude and
phase angle difference of voltage across the line. The UPFC
provides a promising means to control power flow in modern
power systems. Essentially the performance depends on proper
control setting achievable through a power flow analysis
program. This paper presents a reliable method to meet the
requirements by developing a Newton-Raphson based load
flow calculation through which control settings of UPFC can
be determined for the pre-specified power flow between the
lines. The proposed method keeps Newton-Raphson Load Flow
(NRLF) algorithm intact and needs (little modification in the
Jacobian matrix). A MATLAB program has been developed to
calculate the control settings of UPFC and the power flow
between the lines after the load flow is converged. Case studies
have been performed on IEEE 5-bus system and 14-bus system
to show that the proposed method is effective. These studies
indicate that the method maintains the basic NRLF properties
such as fast computational speed, high degree of accuracy and
good convergence rate.
Study of Structural Behaviour of Gravity Dam with Various Features of Gallery...IDES Editor
The size and shape of opening in dam causes the
stress concentration, it also causes the stress variation in the
rest of the dam cross section. The gravity method of the analysis
does not consider the size of opening and the elastic property
of dam material. Thus the objective of study is comprises of
the Finite Element Method which considers the size of
opening, elastic property of material, and stress distribution
because of geometric discontinuity in cross section of dam.
Stress concentration inside the dam increases with the opening
in dam which results in the failure of dam. Hence it is
necessary to analyses large opening inside the dam. By making
the percentage area of opening constant and varying size and
shape of opening the analysis is carried out. For this purpose
a section of Koyna Dam is considered. Dam is defined as a
plane strain element in FEM, based on geometry and loading
condition. Thus this available information specified our path
of approach to carry out 2D plane strain analysis. The results
obtained are then compared mutually to get most efficient
way of providing large opening in the gravity dam.
Assessing Uncertainty of Pushover Analysis to Geometric ModelingIDES Editor
Pushover Analysis a popular tool for seismic
performance evaluation of existing and new structures and is
nonlinear Static procedure where in monotonically increasing
loads are applied to the structure till the structure is unable
to resist the further load .During the analysis, whatever the
strength of concrete and steel is adopted for analysis of
structure may not be the same when real structure is
constructed and the pushover analysis results are very sensitive
to material model adopted, geometric model adopted, location
of plastic hinges and in general to procedure followed by the
analyzer. In this paper attempt has been made to assess
uncertainty in pushover analysis results by considering user
defined hinges and frame modeled as bare frame and frame
with slab modeled as rigid diaphragm and results compared
with experimental observations. Uncertain parameters
considered includes the strength of concrete, strength of steel
and cover to the reinforcement which are randomly generated
and incorporated into the analysis. The results are then
compared with experimental observations.
Secure Multi-Party Negotiation: An Analysis for Electronic Payments in Mobile...IDES Editor
This document summarizes and analyzes secure multi-party negotiation protocols for electronic payments in mobile computing. It presents a framework for secure multi-party decision protocols using lightweight implementations. The main focus is on synchronizing security features to avoid agreement manipulation and reduce user traffic. The paper describes negotiation between an auctioneer and bidders, showing multiparty security is better than existing systems. It analyzes the performance of encryption algorithms like ECC, XTR, and RSA for use in the multiparty negotiation protocols.
Selfish Node Isolation & Incentivation using Progressive ThresholdsIDES Editor
The problems associated with selfish nodes in
MANET are addressed by a collaborative watchdog approach
which reduces the detection time for selfish nodes thereby
improves the performance and accuracy of watchdogs[1]. In
the related works they make use of credit based systems, reputation
based mechanisms, pathrater and watchdog mechanism
to detect such selfish nodes. In this paper we follow an approach
of collaborative watchdog which reduces the detection
time for selfish nodes and also involves the removal of such
selfish nodes based on some progressively assessed thresholds.
The threshold gives the nodes a chance to stop misbehaving
before it is permanently deleted from the network.
The node passes through several isolation processes before it
is permanently removed. Another version of AODV protocol
is used here which allows the simulation of selfish nodes in
NS2 by adding or modifying log files in the protocol.
Various OSI Layer Attacks and Countermeasure to Enhance the Performance of WS...IDES Editor
Wireless sensor networks are networks having non
wired infrastructure and dynamic topology. In OSI model each
layer is prone to various attacks, which halts the performance
of a network .In this paper several attacks on four layers of
OSI model are discussed and security mechanism is described
to prevent attack in network layer i.e wormhole attack. In
Wormhole attack two or more malicious nodes makes a covert
channel which attracts the traffic towards itself by depicting a
low latency link and then start dropping and replaying packets
in the multi-path route. This paper proposes promiscuous mode
method to detect and isolate the malicious node during
wormhole attack by using Ad-hoc on demand distance vector
routing protocol (AODV) with omnidirectional antenna. The
methodology implemented notifies that the nodes which are
not participating in multi-path routing generates an alarm
message during delay and then detects and isolate the
malicious node from network. We also notice that not only
the same kind of attacks but also the same kind of
countermeasures can appear in multiple layer. For example,
misbehavior detection techniques can be applied to almost all
the layers we discussed.
Responsive Parameter based an AntiWorm Approach to Prevent Wormhole Attack in...IDES Editor
The recent advancements in the wireless technology
and their wide-spread deployment have made remarkable
enhancements in efficiency in the corporate and industrial
and Military sectors The increasing popularity and usage of
wireless technology is creating a need for more secure wireless
Ad hoc networks. This paper aims researched and developed
a new protocol that prevents wormhole attacks on a ad hoc
network. A few existing protocols detect wormhole attacks but
they require highly specialized equipment not found on most
wireless devices. This paper aims to develop a defense against
wormhole attacks as an Anti-worm protocol which is based on
responsive parameters, that does not require as a significant
amount of specialized equipment, trick clock synchronization,
no GPS dependencies.
Cloud Security and Data Integrity with Client Accountability FrameworkIDES Editor
This document summarizes a proposed cloud security and data integrity framework that provides client accountability. The framework aims to address issues like lack of user control over cloud data, need for data transparency and tracking, and ensuring data integrity. It proposes using JAR (Java Archive) files for data sharing due to benefits like portability. The framework incorporates client-side verification using MD5 hashing, digital signature-based authentication of JAR files, and use of HMAC to ensure data integrity. It also uses password-based encryption of log files to keep them tamper-proof. The framework is intended to provide both accountability and security for data sharing in cloud environments.
Genetic Algorithm based Layered Detection and Defense of HTTP BotnetIDES Editor
A System state in HTTP botnet uses HTTP protocol
for the creation of chain of Botnets thereby compromising
other systems. By using HTTP protocol and port number 80,
attacks can not only be hidden but also pass through the
firewall without being detected. The DPR based detection
leads to better analysis of botnet attacks [3]. However, it
provides only probabilistic detection of the attacker and also
time consuming and error prone. This paper proposes a Genetic
algorithm based layered approach for detecting as well as
preventing botnet attacks. The paper reviews p2p firewall
implementation which forms the basis of filtering.
Performance evaluation is done based on precision, F-value
and probability. Layered approach reduces the computation
and overall time requirement [7]. Genetic algorithm promises
a low false positive rate.
Enhancing Data Storage Security in Cloud Computing Through SteganographyIDES Editor
This document summarizes a research paper that proposes a method for enhancing data security in cloud computing through steganography. The method hides user data in digital images stored on cloud servers. When data needs to be accessed, it is extracted from the images. The document outlines the cloud architecture and security issues addressed. It then describes the proposed system architecture, security model, and data storage and retrieval process. Data is partitioned and hidden in multiple images to improve security. The goal is to prevent unauthorized access to user data stored on cloud servers.
The main tasks of a Wireless Sensor Network
(WSN) are data collection from its nodes and communication
of this data to the base station (BS). The protocols used for
communication among the WSN nodes and between the WSN
and the BS, must consider the resource constraints of nodes,
battery energy, computational capabilities and memory. The
WSN applications involve unattended operation of the network
over an extended period of time. In order to extend the lifetime
of a WSN, efficient routing protocols need to be adopted. The
proposed low power routing protocol based on tree-based
network structure reliably forwards the measured data towards
the BS using TDMA. An energy consumption analysis of the
WSN making use of this protocol is also carried out. It is
found that the network is energy efficient with an average
duty cycle of 0:7% for the WSN nodes. The OmNET++
simulation platform along with MiXiM framework is made
use of.
Permutation of Pixels within the Shares of Visual Cryptography using KBRP for...IDES Editor
The security of authentication of internet based
co-banking services should not be susceptible to high risks.
The passwords are highly vulnerable to virus attacks due to
the lack of high end embedding of security methods. In order
for the passwords to be more secure, people are generally
compelled to select jumbled up character based passwords
which are not only less memorable but are also equally prone
to insecurity. Multiple use of distributed shares has been
studied to solve the problem of authentication by algorithms
based on thresholding of pixels in image processing and visual
cryptography concepts where the subset of shares is considered
for the recovery of the original image for authentication using
correlation function[1][2].The main disadvantage in the above
study is the plain storage of shares and also one of the shares
is being supplied to the customer, which will lead to the
possibility of misuse by a third party. This paper proposes a
technique for scrambling of pixels by key based random
permutation (KBRP) within the shares before the
authentication has been attempted. Total number of shares to
be created is dependent on the multiplicity of ownership of
the account. By this method the problem of uncertainty among
the customers with regard to security, storage, retrieval of
holding of half of the shares is minimized.
This paper presents a trifocal Rotman Lens Design
approach. The effects of focal ratio and element spacing on
the performance of Rotman Lens are described. A three beam
prototype feeding 4 element antenna array working in L-band
has been simulated using RLD v1.7 software. Simulated
results show that the simulated lens has a return loss of –
12.4dB at 1.8GHz. Beam to array port phase error variation
with change in the focal ratio and element spacing has also
been investigated.
Band Clustering for the Lossless Compression of AVIRIS Hyperspectral ImagesIDES Editor
Hyperspectral images can be efficiently compressed
through a linear predictive model, as for example the one
used in the SLSQ algorithm. In this paper we exploit this
predictive model on the AVIRIS images by individuating,
through an off-line approach, a common subset of bands, which
are not spectrally related with any other bands. These bands
are not useful as prediction reference for the SLSQ 3-D
predictive model and we need to encode them via other
prediction strategies which consider only spatial correlation.
We have obtained this subset by clustering the AVIRIS bands
via the clustering by compression approach. The main result
of this paper is the list of the bands, not related with the
others, for AVIRIS images. The clustering trees obtained for
AVIRIS and the relationship among bands they depict is also
an interesting starting point for future research.
Microelectronic Circuit Analogous to Hydrogen Bonding Network in Active Site ...IDES Editor
A microelectronic circuit of block-elements
functionally analogous to two hydrogen bonding networks is
investigated. The hydrogen bonding networks are extracted
from â-lactamase protein and are formed in its active site.
Each hydrogen bond of the network is described in equivalent
electrical circuit by three or four-terminal block-element.
Each block-element is coded in Matlab. Static and dynamic
analyses are performed. The resultant microelectronic circuit
analogous to the hydrogen bonding network operates as
current mirror, sine pulse source, triangular pulse source as
well as signal modulator.
Texture Unit based Monocular Real-world Scene Classification using SOM and KN...IDES Editor
In this paper a method is proposed to discriminate
real world scenes in to natural and manmade scenes of similar
depth. Global-roughness of a scene image varies as a function
of image-depth. Increase in image depth leads to increase in
roughness in manmade scenes; on the contrary natural scenes
exhibit smooth behavior at higher image depth. This particular
arrangement of pixels in scene structure can be well explained
by local texture information in a pixel and its neighborhood.
Our proposed method analyses local texture information of a
scene image using texture unit matrix. For final classification
we have used both supervised and unsupervised learning using
K-Nearest Neighbor classifier (KNN) and Self Organizing
Map (SOM) respectively. This technique is useful for online
classification due to very less computational complexity.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-EfficiencyScyllaDB
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
This talk will cover ScyllaDB Architecture from the cluster-level view and zoom in on data distribution and internal node architecture. In the process, we will learn the secret sauce used to get ScyllaDB's high availability and superior performance. We will also touch on the upcoming changes to ScyllaDB architecture, moving to strongly consistent metadata and tablets.
Connector Corner: Seamlessly power UiPath Apps, GenAI with prebuilt connectorsDianaGray10
Join us to learn how UiPath Apps can directly and easily interact with prebuilt connectors via Integration Service--including Salesforce, ServiceNow, Open GenAI, and more.
The best part is you can achieve this without building a custom workflow! Say goodbye to the hassle of using separate automations to call APIs. By seamlessly integrating within App Studio, you can now easily streamline your workflow, while gaining direct access to our Connector Catalog of popular applications.
We’ll discuss and demo the benefits of UiPath Apps and connectors including:
Creating a compelling user experience for any software, without the limitations of APIs.
Accelerating the app creation process, saving time and effort
Enjoying high-performance CRUD (create, read, update, delete) operations, for
seamless data management.
Speakers:
Russell Alfeche, Technology Leader, RPA at qBotic and UiPath MVP
Charlie Greenberg, host
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
Essentials of Automations: Exploring Attributes & Automation ParametersSafe Software
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
"NATO Hackathon Winner: AI-Powered Drug Search", Taras KlobaFwdays
This is a session that details how PostgreSQL's features and Azure AI Services can be effectively used to significantly enhance the search functionality in any application.
In this session, we'll share insights on how we used PostgreSQL to facilitate precise searches across multiple fields in our mobile application. The techniques include using LIKE and ILIKE operators and integrating a trigram-based search to handle potential misspellings, thereby increasing the search accuracy.
We'll also discuss how the azure_ai extension on PostgreSQL databases in Azure and Azure AI Services were utilized to create vectors from user input, a feature beneficial when users wish to find specific items based on text prompts. While our application's case study involves a drug search, the techniques and principles shared in this session can be adapted to improve search functionality in a wide range of applications. Join us to learn how PostgreSQL and Azure AI can be harnessed to enhance your application's search capability.
Must Know Postgres Extension for DBA and Developer during MigrationMydbops
Mydbops Opensource Database Meetup 16
Topic: Must-Know PostgreSQL Extensions for Developers and DBAs During Migration
Speaker: Deepak Mahto, Founder of DataCloudGaze Consulting
Date & Time: 8th June | 10 AM - 1 PM IST
Venue: Bangalore International Centre, Bangalore
Abstract: Discover how PostgreSQL extensions can be your secret weapon! This talk explores how key extensions enhance database capabilities and streamline the migration process for users moving from other relational databases like Oracle.
Key Takeaways:
* Learn about crucial extensions like oracle_fdw, pgtt, and pg_audit that ease migration complexities.
* Gain valuable strategies for implementing these extensions in PostgreSQL to achieve license freedom.
* Discover how these key extensions can empower both developers and DBAs during the migration process.
* Don't miss this chance to gain practical knowledge from an industry expert and stay updated on the latest open-source database trends.
Mydbops Managed Services specializes in taking the pain out of database management while optimizing performance. Since 2015, we have been providing top-notch support and assistance for the top three open-source databases: MySQL, MongoDB, and PostgreSQL.
Our team offers a wide range of services, including assistance, support, consulting, 24/7 operations, and expertise in all relevant technologies. We help organizations improve their database's performance, scalability, efficiency, and availability.
Contact us: info@mydbops.com
Visit: https://www.mydbops.com/
Follow us on LinkedIn: https://in.linkedin.com/company/mydbops
For more details and updates, please follow up the below links.
Meetup Page : https://www.meetup.com/mydbops-databa...
Twitter: https://twitter.com/mydbopsofficial
Blogs: https://www.mydbops.com/blog/
Facebook(Meta): https://www.facebook.com/mydbops/
"What does it really mean for your system to be available, or how to define w...Fwdays
We will talk about system monitoring from a few different angles. We will start by covering the basics, then discuss SLOs, how to define them, and why understanding the business well is crucial for success in this exercise.
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
What is an RPA CoE? Session 2 – CoE RolesDianaGray10
In this session, we will review the players involved in the CoE and how each role impacts opportunities.
Topics covered:
• What roles are essential?
• What place in the automation journey does each role play?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
From Natural Language to Structured Solr Queries using LLMsSease
This talk draws on experimentation to enable AI applications with Solr. One important use case is to use AI for better accessibility and discoverability of the data: while User eXperience techniques, lexical search improvements, and data harmonization can take organizations to a good level of accessibility, a structural (or “cognitive” gap) remains between the data user needs and the data producer constraints.
That is where AI – and most importantly, Natural Language Processing and Large Language Model techniques – could make a difference. This natural language, conversational engine could facilitate access and usage of the data leveraging the semantics of any data source.
The objective of the presentation is to propose a technical approach and a way forward to achieve this goal.
The key concept is to enable users to express their search queries in natural language, which the LLM then enriches, interprets, and translates into structured queries based on the Solr index’s metadata.
This approach leverages the LLM’s ability to understand the nuances of natural language and the structure of documents within Apache Solr.
The LLM acts as an intermediary agent, offering a transparent experience to users automatically and potentially uncovering relevant documents that conventional search methods might overlook. The presentation will include the results of this experimental work, lessons learned, best practices, and the scope of future work that should improve the approach and make it production-ready.
inQuba Webinar Mastering Customer Journey Management with Dr Graham HillLizaNolte
HERE IS YOUR WEBINAR CONTENT! 'Mastering Customer Journey Management with Dr. Graham Hill'. We hope you find the webinar recording both insightful and enjoyable.
In this webinar, we explored essential aspects of Customer Journey Management and personalization. Here’s a summary of the key insights and topics discussed:
Key Takeaways:
Understanding the Customer Journey: Dr. Hill emphasized the importance of mapping and understanding the complete customer journey to identify touchpoints and opportunities for improvement.
Personalization Strategies: We discussed how to leverage data and insights to create personalized experiences that resonate with customers.
Technology Integration: Insights were shared on how inQuba’s advanced technology can streamline customer interactions and drive operational efficiency.
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/