This document provides an introduction to control systems and feedback control. It defines key terms like systems, control, controllers, actuators, sensors, and feedback. Examples of control systems are given for temperature, pressure, spacecraft attitude, cruise control, and the human body. Open-loop and closed-loop (feedback) control systems are described. The core components of a control system including the plant, controller, reference, actuator, and sensor are defined. Specific examples of feedback control systems are outlined, including examples for fluid level, magnetic levitation, automobile steering, a steam engine, a submarine, and a water regulator.
Pneumatic control valve
Actual Pneumatic Control Valve
Typical Actuator & Valve
introduction to actuator
Actuator power
Actuator Fluids
Diaphragm Actuator
Positioner Indicator
Valve Body
Valve Plugs
Reverse & Direct Actuators
Air-To-Open vs. Air-To-Close
control valve
Controller Tuning
Selection of controller modes
Tuning Rules
Ziegler – Nichols Controller Settings
Pneumatic control valve
Actual Pneumatic Control Valve
Typical Actuator & Valve
introduction to actuator
Actuator power
Actuator Fluids
Diaphragm Actuator
Positioner Indicator
Valve Body
Valve Plugs
Reverse & Direct Actuators
Air-To-Open vs. Air-To-Close
control valve
Controller Tuning
Selection of controller modes
Tuning Rules
Ziegler – Nichols Controller Settings
Chapter 1 basic components of control systemHarish Odedra
This presentation is on basic of control engineering subject which is offered to 5th sem Mechanical Engineering Department in Gujarat Technological University.
automatic control, Basic Definitions, Classification of Control systems, Requ...Waqas Afzal
Why automatic controls is required
2. Process Variables
controlled variable, manipulated variable
3. Functions of Automatic Control
Measurement
Comparison
Computation
Correction
4.Basic Definitions
System, Plant, Process, Controller, input, output, disturbance
5. Classification of Control systems
Natural, Manmade & Automatic control system
Open-Loop, Close-Loop control System
Linear Vs Nonlinear System
Time invariant vs Time variant
Continuous Data Vs Discrete Data System
Deterministic vs Stochastic System
6. Requirements of an ideal Control system
Accuracy, Sensitivity, noise, Bandwidth, Speed, Oscillations
in modern world, work which are done by humans are now that places are taken by machines. control system are essential to understand how they work. this is basic of control system and also with the example.
Process load,process lag,self regulation,error,control lag,dead time,cycling,discontinious control modes,two position control modes,flaoting control modes,propotional band,offset,propotional control, integral control,derivative control,pid control,pi control,pd control,tuning of pid control
Index
Applications of Control System
Definition of Control System
Open Loop Control System
Applications of Open Loop Control System
Close Loop Control System
Applications of Close Loop Control System
Basic Elements of Control System, Open loop and Closed loop systems, Differential
equations and Transfer function, Modeling of Electric systems, Translational and rotational
mechanical systems, Block diagram reduction Techniques, Signal flow graph
Chapter 1 Introduction to Control Systems From the book (Ogata Modern Control Engineering 5th).
1-1 introduction to control systems.
1-2 examples of control systems.
1-3 open loop vs. close loop.
1-4 design and compensation of control systems.
Chapter 1 basic components of control systemHarish Odedra
This presentation is on basic of control engineering subject which is offered to 5th sem Mechanical Engineering Department in Gujarat Technological University.
automatic control, Basic Definitions, Classification of Control systems, Requ...Waqas Afzal
Why automatic controls is required
2. Process Variables
controlled variable, manipulated variable
3. Functions of Automatic Control
Measurement
Comparison
Computation
Correction
4.Basic Definitions
System, Plant, Process, Controller, input, output, disturbance
5. Classification of Control systems
Natural, Manmade & Automatic control system
Open-Loop, Close-Loop control System
Linear Vs Nonlinear System
Time invariant vs Time variant
Continuous Data Vs Discrete Data System
Deterministic vs Stochastic System
6. Requirements of an ideal Control system
Accuracy, Sensitivity, noise, Bandwidth, Speed, Oscillations
in modern world, work which are done by humans are now that places are taken by machines. control system are essential to understand how they work. this is basic of control system and also with the example.
Process load,process lag,self regulation,error,control lag,dead time,cycling,discontinious control modes,two position control modes,flaoting control modes,propotional band,offset,propotional control, integral control,derivative control,pid control,pi control,pd control,tuning of pid control
Index
Applications of Control System
Definition of Control System
Open Loop Control System
Applications of Open Loop Control System
Close Loop Control System
Applications of Close Loop Control System
Basic Elements of Control System, Open loop and Closed loop systems, Differential
equations and Transfer function, Modeling of Electric systems, Translational and rotational
mechanical systems, Block diagram reduction Techniques, Signal flow graph
Chapter 1 Introduction to Control Systems From the book (Ogata Modern Control Engineering 5th).
1-1 introduction to control systems.
1-2 examples of control systems.
1-3 open loop vs. close loop.
1-4 design and compensation of control systems.
This presentation contains,
i. Basics of Control Systems,
ii. Wind Turbine Controls
iii. Basics about Wind Farm and Control
iv. Wind Turbine Gearbox
v. Wind Turbine Generator
vi. Grids
In this slides, discussed about basic components of control system, step process of control system design and analysis, open loop and closed loop control system, robot accessories and classification of robot as per application.
About
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• Remote control: Parallel or serial interface.
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Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Governing Equations for Fundamental Aerodynamics_Anderson2010.pdf
Handout
1. Lecture#1 Handout
Introduction
A system or a process or a plant is a segment of environment that is under consideration
(working definition).
Control is a term that describes the process of forcing a system to behave in a desired way in
order to achieve certain objective(s)/goal(s).
Examples :
• Temperature control.
• Pressure control.
• Attitude control of spacecrafts
• Cruise control
• Human body implements sophisticated control strategies for various purposes such as
body temperature regulation, hormone level control, etc.
Control systems
Control system is an interconnection of components forming a system configuration that will
provide a desired system response. These components are:
• Plant has one or more inputs and one or more outputs, which can be represented by a
block, as shown below.
Output
Input
Plant
• Actuator the device that causes the plant to provide the output. Or simply, It provides the
motive power to the plant.
• Sensor the device that provides information about the output of the plant (not in every
control systems is present ).
• Controller is the brain of the system. It may be a computer program, electrical or
mechanical device, etc.
• Reference is the desired outcome of the control system.
2. Example 1 : Manual control system for regulating the level of the fluid in a tank [1].
In this control system:
The reference is a desired level of fluid that operator is instructed to maintain.
The actuator is the valve that opens or closes the fluid flow out.
The sensor is visual.
The controller is the operator.
Example 2 : Magnetic Levitation [1].
Computer
In this control system:
The reference is the position of the iron ball.
The actuator is the electromagnet.
The sensor is the gap sensor.
The controller is programmed in the computer.
3. Open-loop and closed-loop control systems :
Depending on configuration, control systems can be categorized into mainly two classes:
i) Open-loop control systems;
ii) Closed-loop (or feedback) control systems.
Open-loop control systems:
An open-loop control system utilizes a controller or actuating device to obtain a desired
response directly without using feedback.
plant
actuator
output
desired output
Example: Controlling the position of a missile launcher from a remote location [2].
The input is the desired angular position of the missile launcher, and the control system consists
of potentiometer, power amplifier, motor, gearing between the motor and missile launcher, and
the missile launcher.
4. Closed-loop (Feedback) control systems:
The structure of a simple closed-loop feedback system is shown below. In contrast to an open-
loop control system, a closed-loop utilizes the additional measure of the actual output to compare
the actual output with the desired output (reference or command). This additional measure of the
output is called the feedback.
Output
Sensor
Plant
Controller
Comparison
Desired output
response
Example: Controlling the position of a missile launcher from a remote location [2].
The previous example is modified by introducing a position feedback loop. Should an error exists,
it is amplified and applied to a motor drive which adjusts the output-shaft position until it agrees
with the input-shaft position, and the error is zero.
5. Example: Automobile steering control system [1]
In this feedback control system:
The reference is the desired path.
The actuator is the steering mechanism.
The sensor is the visual.
The controller is the driver.
The plant is the car.
Example: James Watt’s steam engine (1769) [1]
6. Desired speed Actual speed
Engine
Fly ball Valve
Gears
In this feedback control system:
The reference is the desired speed of the engine.
The actuator is the steam valve.
The sensor is the pulley & gear sets.
The controller is the governor (fly ball).
The plant is the steam engine.
Example: Depth control of a submarine [2]
7. Suppose the captain of the submarine wants the submarine to ”hover” at a desired depth, and sets
the desired depth as a voltage from calibrated potentiometer. The actual depth is measured by a
pressure transducer, which produces a voltage proportional to depth. The deference between the
desired and the actual depth is amplified which then drives a motor that rotates the stern plane
actuator angle θ .
Example: Water-Level regulator [1]
Is this a feedback control system ?
The reference is …...
The actuator is …….
The sensor is …… .
The controller is …….
The plant is …….
Example: CD drive control [1]
Is this a feedback control system ?
The reference is …...
The actuator is …….
The sensor is …… .
The controller is …….
The plant is …….
8. Given a process, how to design a feedback control system?
Three steps:
• Modeling. Obtain mathematical description of the systems.
• Analysis. Analyze the properties of the system.
• Design. Given a plant, design a controller based on performance specifications.
The course spans each of these steps in that sequence.
-Reference
[1]- R. Dorf & R. Bishop, Modern Control Systems, Addison Wesley Longman, Inc., 8th ed.,
1998.
[2]- S. M. Shinners, Modern Control System Theory and Design. New York: Wiley, 2nd ed.,
1998.