Lecture Introduction to Control Systems - Chapter 1: Introduction (Dr. Huynh Thai Hoang)

Lecture Introduction to Control Systems - Chapter 1: Introduction (Dr. Huynh Thai Hoang). The main topics covered in this chapter include: what is control system; control principles; components of control systems Components of control systems; examples of control systems; review of complex variables and Laplace transform;...

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Lecture Notes

Introduction to Control

Instructor: Dr Huynh Thai Hoang Department of Automatic Control Faculty of Electrical & Electronics Engineering

Ho Chi Minh City University of Technology

Email: hthoang@hcmut.edu.vn

huynhthaihoang@yahoo.com Homepage: www4.hcmut.edu.vn/~hthoang/

9 November 2012 © H T Hoang - www4.hcmut.edu.vn/~hthoang/ 1

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Thi i b h l i d d i f

Course objectives

 This course is about the analysis and design of

control systems with emphasis on modeling, state variable representation computer solutions

variable representation, computer solutions,

modern design principles.

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Ch t 1 I t d ti

Course outline

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T tb k F kli P ll d E i N i i F db k

Textbook

Control of Dynamic Systems, 6th ed., Prentice Hall, 2009

Prentice Hall

Control Systems, 9th ed., 2009, Prentice Hall

Systems, 11th ed, Peason

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 Explain the concepts of open-loop and closed-loop control systems

Learning outcomes

 Explain the concepts of open loop and closed loop control systems

 Describe continuous and discrete control systems using transfer function and state space model

 Calculate the equivalent transfer function of control systems using block

 Calculate the equivalent transfer function of control systems using block diagram and signal flow graph

 Analyze the dynamics of control systems in time domain and frequency domain

 Analyze the stability of control systems

 Analyze the transient and steady-state performances of control systems

 Analyze the controllability and observerbility of control systems

 Design lead-lag compensator using root locus and frequency response

 Design PID controller using frequency response, Zeigler-Nichols method

 Design state feedback controller using pole placement method

 Use teamwork and comunication skills in collaborating course design

projects

 Use modern software in analysis and design control systems

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How to learn the course???

30% of what we see

S i it d l ti Watching a demostration

Watching a movie Looking at an exhibit

Doing the real thing and do

(*) Edgar Dale, “Audio-Visual Methods in Teching,” Holt, Rinehart and Winston

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Active learning

much just by sitting in class listening to teachers,

memorizing prepackaged assignments and spitting out

memorizing prepackaged assignments, and spitting out

answers They must talk about what they are learning, write about it relate it to past experiences apply it to their daily

about it, relate it to past experiences, apply it to their daily lives They must make what they learn part of themselves.”

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What is active learning?

classroom other than merely passively listening to an

instructor's lecture This includes everything from listening

instructor s lecture This includes everything from listening practices which help the students to absorb what they hear,

to short writing exercises in which students react to lecture

to short writing exercises in which students react to lecture material, to complex group exercises in which students

apply course material to "real life" situations and/or to new problems “

Paulson & Faust, California State University, Los Angeles,

http://www.calstatela.edu/dept/chem/chem2/Active/index.htm

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Chapter 1

INTRODUCTION

p

INTRODUCTION

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Wh t i t l t ?

Topics

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? What is control system?

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Explain how a control system works?

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Example of a control process

1 reading velocimeter

2 deciding to increase or decrease speed

3 acting on the gas pedal

15

9 November 2012

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Definition of control concept

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Components of a control system

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A simple level control system

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Level control system in industry

LCLV

LTLiquid tank

LC: Level Controller

LT: Level Transmitter

LV L l l

LV: Level valve

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Speed control of steam engine

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 Microcontroller, DSP based control

 Computer based control

 Programmable Logic Controller (PLC)

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Basic problems in control

 System Analysis

 System Design

 System Identification

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Control schemes

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 Need to measure system output

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Feedback and feedforward control

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Hierachy control

Example: SCADA (Supervisory Control And Data Acquisition)

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Beer making process

Chi t chai

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Control system clasification

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Control system classification

 Continuous system: All signals in the system are continous

Discrete system: There exists discrete signals in the system

principle

superposition principle

change over time

time

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History of control theory

 Classical control

 Modern control

 Intelligent control

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Classical control

systems are transfer functions

 Features:

linear time – invariant system

 Analysis and design techniques:

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Modern control

state-space equation

 Features:

 Analysis and design method:

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Intelligent control

intelligent control system

 Features:

information, learning, and handling large amounts of data

 Intelligent control techniques:

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Course objective

 The course Fundamental of Control Systems mainly presents the classic method for analysis and design

of SISO linear time invariant systems

 The knowledge gained from the course help student

to analyze and design control systems at the

executive level.

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Related courses

 To be able to design the control system at the

implementation level, in addition to knowledge of

automatic control theory a designer needs to master the

automatic control theory, a designer needs to master the relevant knowledge, such as:

 Circuits Electronic circuits

 Circuits, Electronic circuits

 Industrial Measurement

 Digital system Microprocessor

 Digital system, Microprocessor

 Computer based control system,

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Applications of control systems

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Applications of control theory

Feedback control can be found in many applications:

(CNC),

washing machines, cameras, rice cookers,

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Temperature control

manufacturing systems: production of cement, ceramic tiles,pulp and paper rubber and plastic oil and gas food andbeverage,…

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Examples of temperature control

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Block diagram of a temperature control system

HeaterDifferential

amplifier

Measurement

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1k Q1

A1015 PORTD<5>

Q4

A1015 PORTD<7>

33 35 37 39

1

RA0/AN0 RA2/AN2/VREF-/CVREF RA3/AN3/VREF+

RA4/T0CKI/C1OUT

RB0/INT RB1 RB3/PGM RB4 RB6/PGC MCLR*/VPP DOT

33p

SW3 SW4

19 21 27 29

13

8

RA5/AN4/SS*/C2OUT RB7/PGD RC0/T1OSO/T1CKI

RC1/T1OSI/CCP2 RC2/CCP1 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6/TX/CK RC7/RX/DT

RD0/PSP0 RD2/PSP2 RD4/PSP4 RD6/PSP6 OSC1/CLKIN

C17

33p

SW1 14

32 31

9 10

OSC2/CLKOUT

VDD VSS

RE1/WR*/AN6 RE2/CS*/AN7

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Temperature measurement using thermocouple

-OP07

3 2

0

0 -5V

+

-U4

OP07

3 2

-U5

OP07

3 2

10uF

3.9k 100

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Power circuit

+12V

Heater FUSE

R3 470

220Vac 0Vdc

Q2 BTA16

Q1 R1

U15 MOC3020

1 2

PORTC<2>

Q2SC1815 47k

R2 330

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An industrial temperature control system

Temperature

controller

Furnace

Thermocouple

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Motor control

machinery and manufacturing factory

torque control

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Antenna position control

and power amplifier

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Analog PID

Analog PID control of DC motor control of DC motor

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Digital PID control of DC motor

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An industrial DC motor control system

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Level control

f

 Level control can be found in industrial processes such

as food and beverage, waste water treatment,…

 Level control, flow control

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Level control system in industry

LCLV

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Pulp concentration control

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Pitch angle control

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Block diagram of pitch angle control system

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CNC diagram

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Block diagram of CNC control system

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Distillation Process

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Steam

Steam Power Generator Power Generator

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Review of complex p variables and matrix theory

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Dynamic Systems, Franklin, Powell, and Emami-Naeini, 6th

ed Prentice Hall 2009

Systems, Franklin, Powell, and Emami-Naeini, 6th ed.,Prentice Hall, 2009

Định dạng
Số trang	66
Dung lượng	1,58 MB

Tiêu đề	Introduction to Control Systems
Người hướng dẫn	Dr. Huynh Thai Hoang
Trường học	Ho Chi Minh City University of Technology
Chuyên ngành	Automatic Control
Thể loại	Lecture Notes
Năm xuất bản	2012
Thành phố	Ho Chi Minh City