This document simulates a linear oscillating tubular motor (LOTM) using mathematical equations and computer tools. It begins by describing the components and operating principle of the LOTM, which consists of an iron bar moving inside a coil. The displacement of the iron bar causes periodic variations in the coil inductance.
The document then presents the mathematical equations that govern the LOTM's operation in terms of inductance as a function of displacement. A block diagram shows how these electrical and mechanical equations are solved using simulation. Graphical results from the simulation show how parameters like inductance, magnetic force, and speed vary over time and displacement. In conclusion, the document discusses how further optimization of the LOTM's magnetic circuit and
Robots play important roles in day to day
activities of human endeavour and can perform
complex tasks speedily and accurately. Robots are
employed to imitate human behaviours and then
apply these behaviours to the skills that lead to
achieving a certain task in solving the challenges
faced by impaired people in society. This robotic arm
was achieved using light-weight steel iron for the
frames, a moderate torque MG995 Towerpro, and
servo motor. Two Atmega328 Arduino
microcontroller was employed to control the motors
through the use of pulse width modulation
technique. Mathematical models were developed for
the mechanism to represent the kinematics involved
at each joint with mathematical variables. Then, the
stability of the system was carried out using a step
input signal being a type zero system.
For driving constant loads in industry, the use of direct-on-line-start permanent-magnet-assisted synchronous reluctance motors with ferrite magnets (DOL-Start-PMa-SynRM) is proposed. The bibliographic search demonstrated that this new motor has greater efficiency than one similar induction motor (IM). It was evidenced that the main element that is required for direct starting is to insert a squirrel cage into the rotor of a PMa-SynRM, which does not produce negative operational effects in a steady state. An economic evaluation was carried out in a sugar mill company, applying the differential net present value (NPV) method, and a sensitivity analysis, considering the four factors that present the most variation. It was demonstrated, by means of a Pareto diagram standardized for the NPV that the most significant factors are fuel factor, lifespan and the multiplication of both. With response surfaces that are obtained with a multilevel factorial experiment, it was determined that, by varying the factors in the ranges considered, the NPV always remains positive and higher than 2200 USD. This is mainly due to the notable difference between the efficiency of the DOL-Start-PMa-SynRM and that of the IM. Consequently, is proved that an investment in the DOL-Start-PMa-SynRM may be feasible.
The present work deals to investigate the performance of linear switched reluctance motor designed for a sliding door application. The objective of this paper is to develop an analytical model in order to predict the dynamic behaviour of the studied motor. Firstly, the characteristics of the proposed motor in open loop operation was computed.Secondly, the effect of the load on the response of the motor was investigated. In this context, a two technoque in open loop were adopted to solve the error positioning with load and to damp the oscillation observed in the characteristics of the motor in order to obtain a smooth motion.
DC Motor Drive System (Cascade Control Strategy)Rishikesh Bagwe
- Controlled the speed of a DC motor using cascaded current and speed PI controllers
- Root Locus Analysis was used to determine the controller gains
- Faster transient response with zero steady - state error was achieved
Performance of Fractional-Slot Winding PM Machines due to Un-even Coil Turns ...IJPEDS-IAES
PM machines in which slot number and pole number combination differs by
one have to be configured with asymmetric winding pattern in order to
maximize it back-emf performance. However, this asymmetric winding
configuration inherently results an unwanted Unabalanced Magnetic Force
(UMF). Investigations of electromagnetic performance of fractional-slot
asymmetric winding PM machines using 2-D Finite-Element Analysis are
presented. The investigations are mainly driven by the effort of minimizing
the UMF. By employing techniques such as non-uniform number of coil
turns in every tooth and asymmetric design of stator tooth, the UMF are
expected can be minimized. The investigations show that the radial
component of UMF has greater effect than the tangential component on the
UMF itself. In all proposed techniques, a slight reduction of machine torque
performance is inevitable.
Robots play important roles in day to day
activities of human endeavour and can perform
complex tasks speedily and accurately. Robots are
employed to imitate human behaviours and then
apply these behaviours to the skills that lead to
achieving a certain task in solving the challenges
faced by impaired people in society. This robotic arm
was achieved using light-weight steel iron for the
frames, a moderate torque MG995 Towerpro, and
servo motor. Two Atmega328 Arduino
microcontroller was employed to control the motors
through the use of pulse width modulation
technique. Mathematical models were developed for
the mechanism to represent the kinematics involved
at each joint with mathematical variables. Then, the
stability of the system was carried out using a step
input signal being a type zero system.
For driving constant loads in industry, the use of direct-on-line-start permanent-magnet-assisted synchronous reluctance motors with ferrite magnets (DOL-Start-PMa-SynRM) is proposed. The bibliographic search demonstrated that this new motor has greater efficiency than one similar induction motor (IM). It was evidenced that the main element that is required for direct starting is to insert a squirrel cage into the rotor of a PMa-SynRM, which does not produce negative operational effects in a steady state. An economic evaluation was carried out in a sugar mill company, applying the differential net present value (NPV) method, and a sensitivity analysis, considering the four factors that present the most variation. It was demonstrated, by means of a Pareto diagram standardized for the NPV that the most significant factors are fuel factor, lifespan and the multiplication of both. With response surfaces that are obtained with a multilevel factorial experiment, it was determined that, by varying the factors in the ranges considered, the NPV always remains positive and higher than 2200 USD. This is mainly due to the notable difference between the efficiency of the DOL-Start-PMa-SynRM and that of the IM. Consequently, is proved that an investment in the DOL-Start-PMa-SynRM may be feasible.
The present work deals to investigate the performance of linear switched reluctance motor designed for a sliding door application. The objective of this paper is to develop an analytical model in order to predict the dynamic behaviour of the studied motor. Firstly, the characteristics of the proposed motor in open loop operation was computed.Secondly, the effect of the load on the response of the motor was investigated. In this context, a two technoque in open loop were adopted to solve the error positioning with load and to damp the oscillation observed in the characteristics of the motor in order to obtain a smooth motion.
DC Motor Drive System (Cascade Control Strategy)Rishikesh Bagwe
- Controlled the speed of a DC motor using cascaded current and speed PI controllers
- Root Locus Analysis was used to determine the controller gains
- Faster transient response with zero steady - state error was achieved
Performance of Fractional-Slot Winding PM Machines due to Un-even Coil Turns ...IJPEDS-IAES
PM machines in which slot number and pole number combination differs by
one have to be configured with asymmetric winding pattern in order to
maximize it back-emf performance. However, this asymmetric winding
configuration inherently results an unwanted Unabalanced Magnetic Force
(UMF). Investigations of electromagnetic performance of fractional-slot
asymmetric winding PM machines using 2-D Finite-Element Analysis are
presented. The investigations are mainly driven by the effort of minimizing
the UMF. By employing techniques such as non-uniform number of coil
turns in every tooth and asymmetric design of stator tooth, the UMF are
expected can be minimized. The investigations show that the radial
component of UMF has greater effect than the tangential component on the
UMF itself. In all proposed techniques, a slight reduction of machine torque
performance is inevitable.
Bearingless Permanent Magnet Synchronous Motor using Independent ControlIJPEDS-IAES
Bearingless permanent magnet synchronous motor (BPMSM) combines the
characteristic of the conventional permanent magent synchronous motor and
magnetic bearing in one electric motor. BPMSM is a kind of high
performance motor due to having both advantages of PMSM and magnetic
bearing with simple structure, high efficiency, and reasonable cost. The
research on BPMSM is to design and analyse BPMSM by using Maxwell 2-
Dimensional of ANSYS Finite Element Method (FEM). Independent
suspension force model and bearingless PMSM model are developed by
using the method of suspension force. Then, the mathematical model of
electromagnetic torque and radial suspension force has been developed by
using Matlab/Simulink. The relation between force, current, distance and
other parameter are determined. This research covered the principle of
suspension force, the mathematical model, FEM analysis and digital control
system of bearingless PMSM. This kind of motor is widely used in high
speed application such as compressors, pumps and turbines.
Air Gap Effect on the AFPM Generator (Inner Rotor) PerformanceIJERDJOURNAL
Abstract:- The axial flux permanent generator double stator- single rotor ((inner rotor) is presented in this paper. The aim study is find the relation between air gap size and output performance of the generator. By changing, the air gap size and observe the output generator are discussed. Torque types of the coreless AFPM generator (initial torque and electromagnetic torque) are calculated. The stators (S1 &S2) can be connected either in parallel to get more voltage or in series to get more current. Finite Element Analysis (FEA) is used to calculate flux density of the permanent magnet at deferent air gap size by using (ANSOFT Maxwell) software. Also the output voltage sine wave of the generator and the phase angle between each pairs of the phases are verified. Moreover the output voltage can be controlled by control in air gap size, when the shaft speed was fixed is discussed.
Determination of Coil Inductances Cylindrical Iron Nucleusijeei-iaes
The paper describes the investigation and development of a structure and performance characteristics of a coil iron nucleus cylindrical (C.I.N.C). The coil iron nucleus cylindrical is a nonlinear electro radio in which the moving of the nucleus in a sense or in other causes change in inductance and can reach extreme values at the superposition of nucleus and coil centers. The variation of the inductance and the degree of freedom of movement of the nucleus can lead to a device with electromechanical conversion The aim of this paper is the determination and visualization of self inductance and mutual of the (C.I.N.C) based on geometric dimensions and the displacement of the nucleus.
A breakthrough in this century has been the development of electric vehicle which is propelled by electric motor powered by electricity. Already, many electric motors have been used for electric vehicle application but performances are low. In this paper, a permanent magnet motor technology using unconventional segmented rotor for high torque application is presented. Unlike conventional motors, this design, flux switching motor (FSM) is an advance form of synchronous machine with double rotating frequency. It accommodates both armature winding and flux source on the stator while the rotor is a simple passive laminated sheet steel. Conventionally, rotor of the maiden FSM and many emerging designs have focused on the salient pole, this design employs segmented rotor. Segmented rotor has advantages of short flux path more than salient rotor pole resulting in high flux linkage. Geometric topology of the proposed motor is introduced. It consists of 24Stator-14Pole using PM flux source with alternate stator tooth armature winding. The 2D-FEA model utilized JMAG Tool Solver to design and analyze motor’s performance in terms of torque with average torque output of 470Nm. The suitability of segmented outer-rotor FS motor as a high torque machine, using permanent magnet technology is a reliable candidate for electric vehicle.
Design of Switched Reluctance Motor for Three Wheeler Electric Vehicleidescitation
Switched Reluctance M achines (SRM ) offer
attractive attributes for automotive applications. Low cost, high
reliability, and competitive weight and efficiency combine to
make the switched reluctance (SR) motor drive a strong
candidate for application in future electric vehicle (EV)
propulsion systems. This paper proposes a methodology to
determine separately the peak and continuous power ratings
of a switched reluctance motor (SRM) for electric propulsion
of an electric vehicle (EV).same machine have to deliver peak
and continuous power for different road load condition of
vehicle. Then gives switched reluctance design guidelines for
battery operated electric vehicles. Finally, it presents the
design and simulation of a switched reluctance motor power
train.
COMPARISON OF RESPONSE TO UNBALANCE OF OVERHUNG ROTOR SYSTEM FOR DIFFERENT SU...IAEME Publication
Rotor unbalance is most common fault found in the rotating machines. Methods
are adopted to analyze the position of unbalance and to bring its effect into acceptablelimit. Vibration analysis is the most common technique used to analyze the rotor
system. Research have been performed on rotor supported atboth ends, however lessstudy has been done for overhung rotor. In this paper the response of overhung rotoron isotropic support and anisotropic support subject tounbalance has been presented.and equations aresolved using MATLAB programming. The effect of unbalancehas been studied on thebode plot. Forward and Reverse whirl are observed through Campbell diagram andmode shapes are plotted.
Decoupled Inverter Fed - Open end Winding Induction Motor Drive for Three Le...IJMER
An open-end winding induction motor, fed by two 2-level inverters connected at either end
produces space vector locations, identical to those of a conventional 3-level inverter. In this paper, two
switching algorithms are proposed to implement space vector PWM for the dual inverter scheme. The
proposed algorithms do not employ any look-up tables. The time consuming task of sector identification
is altogether avoided in both these algorithms. The proposed algorithms employ only the instantaneous
reference phase voltages for the implementation of the space vector PWM. An equal switching duty for
both the inverters is also ensured with one of the proposed PWM strategies. Also, it is observed that the
speed torque and voltages in motor phases is significantly reduced with the proposed PWM strategies.
A fully-functional 2x2-element array of tip-tilt-piston micromirrors with large deflection angles and large piston range is
presented. A control system has also been developed which includes an extensive software package and a multi-channel highvoltage
amplifier that allows the user to independently control all available degrees of freedom (i.e. tip, tilt, or piston) for each
individual device in the array.
Improved Rotor Speed Brushless DC Motor Using Fuzzy Controllerijeei-iaes
A brushless DC (BLDC) Motors have advantages over brushed, Direct current (DC) Motors and , Induction motor (IM). They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive appliance, aerospace medical, and instrumentation and automation industries This paper can be seen as fuzzy controllers compared to PI control BLDC motor rotor speed has improved significantly and beter result can be achieve.
Permanent magnet flux switching machine (PMFSM) is a joint venture of switch reluctance machine (SRM) and permanent magnet synchronous machine (PMSM). It has become a prominent research topic for various applications because of robust rotor structure, high torque and power densities but few were developed for downhole applications mainly due to harsh environmental conditions. Formerly, most of developed PMFSMs for downhole applications were mainly concentrated on inner-rotor type design, and difficult to find research work on outer-rotor configuration. Therefore, this paper introduces the design and investigation of PMFSM with outer-rotor configuration for downhole application. Primarily, the geometric topology of proposed design is described in detail. Then, the no load and load analysis are implemented in order to investigate the initial performance of the proposed design.
Bearingless Permanent Magnet Synchronous Motor using Independent ControlIJPEDS-IAES
Bearingless permanent magnet synchronous motor (BPMSM) combines the
characteristic of the conventional permanent magent synchronous motor and
magnetic bearing in one electric motor. BPMSM is a kind of high
performance motor due to having both advantages of PMSM and magnetic
bearing with simple structure, high efficiency, and reasonable cost. The
research on BPMSM is to design and analyse BPMSM by using Maxwell 2-
Dimensional of ANSYS Finite Element Method (FEM). Independent
suspension force model and bearingless PMSM model are developed by
using the method of suspension force. Then, the mathematical model of
electromagnetic torque and radial suspension force has been developed by
using Matlab/Simulink. The relation between force, current, distance and
other parameter are determined. This research covered the principle of
suspension force, the mathematical model, FEM analysis and digital control
system of bearingless PMSM. This kind of motor is widely used in high
speed application such as compressors, pumps and turbines.
Air Gap Effect on the AFPM Generator (Inner Rotor) PerformanceIJERDJOURNAL
Abstract:- The axial flux permanent generator double stator- single rotor ((inner rotor) is presented in this paper. The aim study is find the relation between air gap size and output performance of the generator. By changing, the air gap size and observe the output generator are discussed. Torque types of the coreless AFPM generator (initial torque and electromagnetic torque) are calculated. The stators (S1 &S2) can be connected either in parallel to get more voltage or in series to get more current. Finite Element Analysis (FEA) is used to calculate flux density of the permanent magnet at deferent air gap size by using (ANSOFT Maxwell) software. Also the output voltage sine wave of the generator and the phase angle between each pairs of the phases are verified. Moreover the output voltage can be controlled by control in air gap size, when the shaft speed was fixed is discussed.
Determination of Coil Inductances Cylindrical Iron Nucleusijeei-iaes
The paper describes the investigation and development of a structure and performance characteristics of a coil iron nucleus cylindrical (C.I.N.C). The coil iron nucleus cylindrical is a nonlinear electro radio in which the moving of the nucleus in a sense or in other causes change in inductance and can reach extreme values at the superposition of nucleus and coil centers. The variation of the inductance and the degree of freedom of movement of the nucleus can lead to a device with electromechanical conversion The aim of this paper is the determination and visualization of self inductance and mutual of the (C.I.N.C) based on geometric dimensions and the displacement of the nucleus.
A breakthrough in this century has been the development of electric vehicle which is propelled by electric motor powered by electricity. Already, many electric motors have been used for electric vehicle application but performances are low. In this paper, a permanent magnet motor technology using unconventional segmented rotor for high torque application is presented. Unlike conventional motors, this design, flux switching motor (FSM) is an advance form of synchronous machine with double rotating frequency. It accommodates both armature winding and flux source on the stator while the rotor is a simple passive laminated sheet steel. Conventionally, rotor of the maiden FSM and many emerging designs have focused on the salient pole, this design employs segmented rotor. Segmented rotor has advantages of short flux path more than salient rotor pole resulting in high flux linkage. Geometric topology of the proposed motor is introduced. It consists of 24Stator-14Pole using PM flux source with alternate stator tooth armature winding. The 2D-FEA model utilized JMAG Tool Solver to design and analyze motor’s performance in terms of torque with average torque output of 470Nm. The suitability of segmented outer-rotor FS motor as a high torque machine, using permanent magnet technology is a reliable candidate for electric vehicle.
Design of Switched Reluctance Motor for Three Wheeler Electric Vehicleidescitation
Switched Reluctance M achines (SRM ) offer
attractive attributes for automotive applications. Low cost, high
reliability, and competitive weight and efficiency combine to
make the switched reluctance (SR) motor drive a strong
candidate for application in future electric vehicle (EV)
propulsion systems. This paper proposes a methodology to
determine separately the peak and continuous power ratings
of a switched reluctance motor (SRM) for electric propulsion
of an electric vehicle (EV).same machine have to deliver peak
and continuous power for different road load condition of
vehicle. Then gives switched reluctance design guidelines for
battery operated electric vehicles. Finally, it presents the
design and simulation of a switched reluctance motor power
train.
COMPARISON OF RESPONSE TO UNBALANCE OF OVERHUNG ROTOR SYSTEM FOR DIFFERENT SU...IAEME Publication
Rotor unbalance is most common fault found in the rotating machines. Methods
are adopted to analyze the position of unbalance and to bring its effect into acceptablelimit. Vibration analysis is the most common technique used to analyze the rotor
system. Research have been performed on rotor supported atboth ends, however lessstudy has been done for overhung rotor. In this paper the response of overhung rotoron isotropic support and anisotropic support subject tounbalance has been presented.and equations aresolved using MATLAB programming. The effect of unbalancehas been studied on thebode plot. Forward and Reverse whirl are observed through Campbell diagram andmode shapes are plotted.
Decoupled Inverter Fed - Open end Winding Induction Motor Drive for Three Le...IJMER
An open-end winding induction motor, fed by two 2-level inverters connected at either end
produces space vector locations, identical to those of a conventional 3-level inverter. In this paper, two
switching algorithms are proposed to implement space vector PWM for the dual inverter scheme. The
proposed algorithms do not employ any look-up tables. The time consuming task of sector identification
is altogether avoided in both these algorithms. The proposed algorithms employ only the instantaneous
reference phase voltages for the implementation of the space vector PWM. An equal switching duty for
both the inverters is also ensured with one of the proposed PWM strategies. Also, it is observed that the
speed torque and voltages in motor phases is significantly reduced with the proposed PWM strategies.
A fully-functional 2x2-element array of tip-tilt-piston micromirrors with large deflection angles and large piston range is
presented. A control system has also been developed which includes an extensive software package and a multi-channel highvoltage
amplifier that allows the user to independently control all available degrees of freedom (i.e. tip, tilt, or piston) for each
individual device in the array.
Improved Rotor Speed Brushless DC Motor Using Fuzzy Controllerijeei-iaes
A brushless DC (BLDC) Motors have advantages over brushed, Direct current (DC) Motors and , Induction motor (IM). They have better speed verses torque characteristics, high dynamic response, high efficiency, long operating life, noiseless operation, higher speed ranges, and rugged construction. Also, torque delivered to motor size is higher, making it useful in application where space and weight are critical factors. With these advantages BLDC motors find wide spread application in automotive appliance, aerospace medical, and instrumentation and automation industries This paper can be seen as fuzzy controllers compared to PI control BLDC motor rotor speed has improved significantly and beter result can be achieve.
Permanent magnet flux switching machine (PMFSM) is a joint venture of switch reluctance machine (SRM) and permanent magnet synchronous machine (PMSM). It has become a prominent research topic for various applications because of robust rotor structure, high torque and power densities but few were developed for downhole applications mainly due to harsh environmental conditions. Formerly, most of developed PMFSMs for downhole applications were mainly concentrated on inner-rotor type design, and difficult to find research work on outer-rotor configuration. Therefore, this paper introduces the design and investigation of PMFSM with outer-rotor configuration for downhole application. Primarily, the geometric topology of proposed design is described in detail. Then, the no load and load analysis are implemented in order to investigate the initial performance of the proposed design.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
The continuous model of the linear induction motor (LIM) has been made considering the edge effects and the attraction force. Taking the attraction force into account is im- portant when considering dynamic analysis when the motor operates under mechanical load. A laboratory prototype has been implemented from which the parameters of the equivalent LIM circuit have been obtained. The discrete model has been developed to quickly obtain computational solutions and to analyze non-linear behaviors through the application of discrete control systems. In order to obtain the discrete model of the LIM we have started from the solution of the continuous model. To develop the model, the magnetizing inductance has been considered, which reflects the edge effects. In the results, the model is compared without considering the edge effects or the attraction force with the proposed model.
Study of Wind Turbine based Variable Reluctance Generator using Hybrid FEMM-M...Yayah Zakaria
Based on exhaustive review of the state of the art of the electric generators fitted to Wind Energy Conversion System (WECS), this study is focused on an innovative machine that is a Variable Reluctance Generator (VRG). Indeed, its simple and rugged structure (low cost), its high torque at low speed (gearless), its fault-tolerance (lowest maintenance), allow it to be a potential candidate for a small wind power application at variable wind
speed. For better accuracy, a finite element model of a studied doubly salient VRG is developed using open source software FEMM to identify the electromagnetic characteristics such as linkage flux, torque or inductance versus rotor position and stator excitation. The obtained data are then transferred into look-up tables of MATLAB/Simulink to perform various simulations. Performance of the proposed wind power system is analyzed for several parameters and results are discussed.
Study of Wind Turbine based Variable Reluctance Generator using Hybrid FEMM-M...IJECEIAES
Based on exhaustive review of the state of the art of the electric generators fitted to Wind Energy Conversion System (WECS), this study is focused on an innovative machine that is a Variable Reluctance Generator (VRG). Indeed, its simple and rugged structure (low cost), its high torque at low speed (gearless), its fault-tolerance (lowest maintenance), allow it to be a potential candidate for a small wind power application at variable wind speed. For better accuracy, a finite element model of a studied doubly salient VRG is developed using open source software FEMM to identify the electromagnetic characteristics such as linkage flux, torque or inductance versus rotor position and stator excitation. The obtained data are then transferred into look-up tables of MATLAB/Simulink to perform various simulations. Performance of the proposed wind power system is analyzed for several parameters and results are discussed.
Analysis of the Effect of Electric and Magnetic Loadings on the Design Parame...IJERA Editor
This paper looks at the effect of magnetic loading and electric loading on the design parameters of an induction motor and its performance. The study involves the use of MATLAB to simulate 50kW, 3-phase, 415V, 50Hz, 6 poles induction machine. Based on the variation of the magnetic and electric loading of the machine, the various design values of the rotor and stator of the machine are specified. The performance index which includes stator loss, rotor loss, cost, power factor, efficiency, and torque are also specified for squirrel cage induction motor (SCIM)
The Self Excited Induction Generator with Observation Magnetizing Characteris...IJPEDS-IAES
This paper discusses The Self Excitated Induction Generator (SEIG) by approaching the induction machine, physically and mathematically which then transformed from three-phase frame abc to two-axis frame, direct-axis and quadratur-axis. Based on the reactive power demand of the induction machine, capacitor mounted on the stator of the induction machine then does the physical and mathematical approach of the system to obtain a space state model. Under known relationships, magnetization reactance and magnetizing current is not linear, so do mathematical approach to the magnetization reactance and magnetization current characteristic curve to obtain the magnetization reactance equation used in the calculation. Obtained state space model and the magnetic reactance equation is simulated by using Runge Kutta method of fourth order. The equations of reactance, is simulated by first using the polynomial equation and second using the exponent equation, and then to compare those result between the polynomial and exponent equations. The load voltage at d axis and q axis using the polynomial lags 640μs to the exponent equation. The polynomial voltage magnitude is less than 0.6068Volt from the exponent voltage magnitude.
This paper deal with the problem in speed controller for Indirect Field Oriented Control of Induction Motor. The problem cause decrease performance of Induction Motor where it widely used in high-performance applications. In order decrease the fault of speed induction motor, Takagi-Sugeno type Fuzzy logic control is used as the speed controller. For this, a model of indirect field oriented control of induction motor is built and simulating using MATLAB simulink. Secondly, error of speed and derivative error as the input and change of torque command as the output for speed control is applied in simulation. Lastly, from the simulation result overshoot is zero persent, rise time is 0.4s and settling time is 0.4s. The important data is steady state error is 0.01 percent show that the speed can follow reference speed. From that simulation result illustrate the effectiveness of the proposed approach.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
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The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
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F010112934
1. IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
e-ISSN: 2278-1676,p-ISSN: 2320-3331, Volume 10, Issue 1 Ver. I (Jan – Feb. 2015), PP 29-34
www.iosrjournals.org
DOI: 10.9790/1676-10112934 www.iosrjournals.org 29 | Page
Simulation of a linear oscillating tubular motor
Dr. Mazouz Azeddine1
, Dr. Hedjazi Djemai1
1
(Department of electrical Engineering University of Batna ALGERIA)
Abstract: Still continuing our study of tubular linear oscillation motors (LOTM), the work presented in this
paper shows a simulation of a tubular linear motor oscillating, the latter is that a coil iron nucleus C.I.N.C.
Determining the inductance of the coil turns the model in mathematical equations that govern the operation of
(LOTM) in order to know the performance of the motor. Note that it is very difficult to calculate the inductance
of such a motor type by classical methods because the coil is magnetically saturated is to say the system is not
linear, so the necessity of use computer tools.
Key words: linear motor; Ferro-resonance, oscillating motor, inductance, coil.
I. Introduction:
The linear oscillating tubular motor consists of an iron bar moving inside a coil [8], figure 1.
The displacement of the nucleus in direct-reverse movement can lead to a Ferro resonance phenomena
which affect all the circuit parameters; hence it is called parametrical motor. This type of motor which is based
on the inductance periodical variation operating in linear oscillating regime leads to a change in the behaviour of
the electrical circuit. This behaviour is accompanied with electromechanical phenomena which make the
mathematical approach and simulation delicate [9].
Its operating particularity needs an adequate conception of a starting circuit as well as another circuit
for breaking. They need to understand that the Starter motor requires manual pulse, and when we want to stop
the motor by turning off the power, the nucleus is ejected outwards as a pitcher. So two solutions are possible to
solve these two important problems and we propose:
1 – Strengthen the two ends of the coil turns (of Excitation winding) for the motor starts easily figure 2.
2. a– The nucleus must be held by two springs at both ends figure 3.
2.b – Put a capacity parallel with the motor so that the kernel not eject in the area figure3.
Figure1. Linear oscillating tubular motor
Figure 2. Reinforcement of both ends of the coil windings Exciter
Figure 3 LOTM with return springs and the ability to stop by electrical damping
2. Simulation of a linear oscillating tubular motor
DOI: 10.9790/1676-10112934 www.iosrjournals.org 30 | Page
II. Setting Of The Equation LOTM
LMTO inductance L is a function of displacement [1] is given by the following formulas:
0 2.fL L L M (1)
With:
fLLkM .0 (2)
And,
flls
l
N
µls
l
N
µL 0000
2
00
²
²
.
²
. (3)
ffff lsµs
l
N
µL ])1(.[
²
. 0
2
0 (4)
L0: inductance of the coil without iron nucleus.
Lf: inductance of the nucleus.
And we know that the magnetic force is the derivative of the magnetic energy [1], and it is magnetic force that
causes the oscillation of the nucleus:
Fm =
dw
dt
(5)
As magnetic energy is defined by the following formula [2]:
w =
1
2
L0i1
2
+
1
2
Lfi2
2
+ Mi1i2 (6)
Therefore, the magnetic force will be equal to:
Fm =
1
2
dL0
dt
i1
2
+
1
2
dLf
dt
i2
2
+
dM
dt
i1i2 (7)
And even:
Fm =
1
2
dL0
dx
dx
dt
i1
2
+
1
2
dLf
dx
dx
dt
i2
2
+
dM
dt
i1i2 (8)
On the other we have:
dx
dt
= v (9)
With v: the speed of the nucleus
So :
Fm =
1
2
dL0
dx
v. i1
2
+
1
2
dLf
dx
v . i2
2
+
dM
dt
i1i2 (10)
Determining the speed V will be after the resolution of the mechanical equation that governs the functioning of
LOTM [9].
The superposition of the two curves lf = f (x) (coil length), and l0 = g (x) (nucleus length) shown in
Figure (4) shows the evolution of the gradual penetration of the nucleus in the coil chasing air that above.
l0 : coil length
lf : nucleus length
3. Simulation of a linear oscillating tubular motor
DOI: 10.9790/1676-10112934 www.iosrjournals.org 31 | Page
Figure 4. Progressive evolution of the nucleus
III. Simulation
The system of equations reflecting the operation of parametric oscillating motor is solved according to
the block diagram of Figure 5
Figure 5. Block diagram of a simulation LOTM
The electrical part figure 6.a and figure 6. b, is a set of blocks representing the different parameters of
electrical equations that govern the operation of the motor made above.
4. Simulation of a linear oscillating tubular motor
DOI: 10.9790/1676-10112934 www.iosrjournals.org 32 | Page
Figure 6.a SUB-SYSTEM electrical part
Figure 6.b SUB-SYSTEM electrical part
Figure 7. SUB-SYSTEM mechanical part.
L0
2
uc
1
i1
Sine Wave
Scope3
Scope2
Scope1
Product1
1
s
Integrator2
1
s
Integrator1
[i1]
Goto4
Divide
Add
-C-
1/c
4
Input
3
2
i2vM
1
Mi2
5. Simulation of a linear oscillating tubular motor
DOI: 10.9790/1676-10112934 www.iosrjournals.org 33 | Page
below, the graphical results, whether those obtained in MATLAB (figures (. a) shown in the left
column), or those obtained by simulation figure (b) shown in the right column.
Figure (8.a, 8. b) Variation of the inductance of the nucleus Lf in function of time and displacement.
Figure (9.a, 9. b) Variation of the inductance of coil without iron nucleus L0 in function of the
displacement and time.
Figure (10.a, 10. b) Variation of the total inductance L in function of the displacement and the time
Figure (11.a, 11. b). Variation of the mutual M in function of the displacement and the time
Figure (12.a, 12. b) variation of the magnetic force in function of the displacement and the time
6. Simulation of a linear oscillating tubular motor
DOI: 10.9790/1676-10112934 www.iosrjournals.org 34 | Page
Figure (13.a,13.b) variation of the speed in function of the displacement and the time.
IV. Conclusion:
Faced with these comments and looks of results, interesting perspectives that can contribute to
improving the functioning of the device MLTO are possible: The study of other configurations and
optimization of the magnetic circuit may contribute to the improvement of motor LOTM.
The stability and control of this type of motor may facilitate its integration in several industrial applications.
The possibility of a storage system and technical and economic optimization of the electro-mechanical
conversion chain integration. The study of the magnetic perturbations inherent coupling reaction LOTM
overlooked imbalances and voltage dips and fluctuations.
References
[1]. S. Kikuchi and K. Ishikawa « A New Type 4-Legged Linear Parametric Motor with Excellent Performance» IEEE Transactions
on magnetic, vol. 33, No. 5, September 1997. IEEE Transactions on magnetic, vol. 34, No 4 , July 1998.
[2]. K. Ishikawa and M. Ishizuka and S. Kikuchi, Performance Characteristics of A New Type of Linear Parametric Motor With
Double Driving Surfaces, IEEE Transactions on magnetic, vol. 34, No 4 , July 1998.
[3]. Yorshinori Mitsuo Natsusaka Koichi Murakami, « Anomalous phenomena in the performance of the parametric motors »
[4]. B.Z.Kaplan, « A note on parametric machines » Proc. IEEE, vol.54, p. 898, 1966.
[5]. D. HEDJAZI and A. Chaghi and.Abdessamed, “Modeling and characterization of High Performance Linear Oscillating Parametric
Motor, Jee Journal of Electrical Engineering” , vol. 7, N°1,Poitechnica of Timisoara, Romania. ISSN 1582-4594, 2007.
[6]. K. Ishikawa and S. Kikuchi, « Improvement of the Performance characteristics of a linear parametric motor with Open Magnetic
Circuit » IEEE Transactions on magnetics, vol. 35, No. 5, September 1999.
[7]. E.A.Mandrela, «Comparison of the performance of a lnear reluctance oscillating motor operating under AC supply with one under
DC supply » IEE transactions on energy conversion, Vol.14 N° 3, September 1999.
[8]. A.MAZOUZ, D.HEDJAZI A.CHAGHI, “Calculation and visualization of inductances and magnetic force of a coil iron nucleus”,
IOSR-JEEE. Vol 9, N°1, 2014.
[9]. A.MAZOUZ, D.HEDJAZI, “Comparative study between two models of a linear oscillating tubular motor”, IOSR-JEEE. Vol 9,
N°4, 2014.
Dr. Azeddine MAZOUZ was born in Algeria BATNA, 1959. He received an engineering
degree and magister electrical engineering at the University of BATNA (ALGERIA) in 1986
and 1995 respectively; PhD in electrical engineering in 2014. His areas of interest include
finite elements, electric motors, linear motors and electromagnetic fields.
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
t
v