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Introduction_Control_System_ChapterOne.ppt
1. July 2004
2009 Lecture Side
Lecture by
Suradet Tantrairatn
Instructor and Researcher
Chapter One
week1
January 2009
Introduction to Automatic Control
6. ยฉ
AIRBUS
UK
LTD
2002.
All
rights
reserved.
Confidential
and
proprietary
document.
Month 200X
2009 Subject Name Automotive Automatic Control Page 2
What is Control System? (3)
Feedback
โขFeedback is a key tool that can be used to modify the
behavior of a system.
โขThis behavior altering effect of feedback is a key
mechanism that control engineers exploit deliberately
to achieve the objective of acting on a system to
ensure that the desired performance specifications
are achieved.
14. ยฉ
AIRBUS
UK
LTD
2002.
All
rights
reserved.
Confidential
and
proprietary
document.
Month 200X
2009 Subject Name Automotive Automatic Control Page 2
Modeling & Design in Control
I. DYNAMIC MODELING
โข Deriving a dynamic model ( = set of differential
equations that describes the dynamic behavior of the
plant)
โข Linearization the dynamic model if necessary
II. DESIGN OF A CONTROLLER: Several design methods
1. Classical control or Root Locus Design:
Define the transfer function; Apply root locus, loop
shaping,
2. Modern control:
Convert ODE to state equation; Apply Pole Placement,
Robust control, โฆ
3. Nonlinear control: Apply Lyapunovโs stability criterion