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Chapter 1

Introduction

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Control System Definition.System Classification.Control System Configulation.Analysis and Design Objectives.Studying of Control System.

Outline

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Control System Definition

Definition : A control system consists of sub- systems and processes assemble for a propose of controlling the outputs of the processes. We can simply say that :- A Control System is a technic applied to processes in order to lead the outcome to satisfy the goal.

หน้า 4242-381 : introduction

Manual feedback control

Water

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Simplified description of a control system

Objectives Results

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System Classification

Static or Dynamic SystemsContinuous-Time or Discrete-time SystemsLinear or Non-Linear SystemsLumped or Distributed ParametersTime-Varying or Time-invariant SystemsDeterministic or Stochastic Systems

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Rover was built towork in contaminatedareas at Three MileIsland in Middleton,PA, where a nuclearaccident occurred in1979. The remotecontrolled robot’slong arm can be seenat the front of thevehicle.

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a. Video laser discplayer;b. objective lensreading pits on alaser disc;c. optical path forplayback showingtracking mirror rotatedby a control system tokeep the laser beampositioned on the pits.

(a)

(b)

(c)

หน้า 9242-381 : introduction

PROCESS

OPENED LOOP

INPUT OUTPUT

Control System Configulation

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PROCESS

FEEDBACK

CLOSED LOOP

INPUT OUTPUT

Control System Configulation

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Analysis and Design Objectives

Transient Response Steady-State Response Stability Sensibility

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Computer hard diskdrive, showing disksand read/write head

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Antenna azimuth position control system

System concept

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Detailed layout

Antenna azimuth position control system

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Schematic

Antenna azimuth position control system

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Functional block diagram

Antenna azimuth position control system

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Equivalent block diagram for the antenna azimuth position control system

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Response of a position control system showing effect of high and low controller gain on the output response

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Control System Design Process

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Design Tools

Scilab Matlab etc.

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Studying of Control Systems

Classic Control Systems Digital Control Systems Modern Control System

Signal and Systems

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Optimal Control Adaptive Control Robust Control Stochastic Control Identification Optimisation

Studying of Control Systems