Page last updated February 15, 2008
ME 380: Analysis and Design of Mechanical Control Systems

Description

An introduction to automatic control systems, using classical control methods in the frequency domain. Classical stability and performance analysis methods include the root locus as well as the Bode and Nyquist diagrams. Control design will be introduced based complex plane and frequency performance specifications.

Prerequisites

  • understanding of modeling and dynamic response,
  • linear differential equations,
  • Laplace transform.

Course Aims

Introduction to

  • Linear control systems
  • Stability analysis techniques
  • Control system performance
  • Feedback control design

By the end of the course students should be able to

  • interpret and switch between differential equation and tranfer function system representations
  • relate the time response to transfer function characteristics
  • understand stability and time domain specifications
  • conclude about stability using a variety of analysis tools
  • design PID controllers and understand the effect of their components
  • draw and interpret root loci, Nyquist and Bode diagrams
  • design feedback controllers in frequency domain.
 
Time & location Tuesday/Thursday 1530-1645
Mechanical Engineering Building,
Room ME 208
Instructor Bert Tanner
Mechanical Engineering Bldg, Room 422
Tel: 277-1493
e-mail:
Office hours Wednesdays 1100-1400
Text

 N.S. Nise, Control Systems Engineering, 4th ed., Wiley, 2004

Further reading:

  • B.C. Kuo, F. Golnaraghi, Automatic Control Systems, Wiley
  • J. Dorcey, Continuous and Discrete Control Systems, Mc Gray Hill
  • G.F. Franklin, J.D. Powell and A. Emami-Naeini, Feedback Control of Dynamic Systems, Prentice-Hall
  • F.M. Callier, C.A. Desoer, Linear Systems Theory, Springer Verlag
Grading policy
  • 20% Weekly assignments
  • 30% Midterm examination (in class)
  • 50% Final examination (in class) - 5/15, 1500-1700
  • Grading scale:
    A 94.00-100 B 84.00-86.99 C- 70.00-73.99
    A- 90.00-93.99 B- 80.00-83.99 D+ 67.00-69.99
    B+ 87.00-89.99 C 74.00-76.99 F below 

    Overdue assignments may be accepted after charging (at least) %20 for each overdue date.
Tentative schedule
1/22
Course introduction, signals and systems
1/24
Models of linear systems, the Laplace transform
1/29
Partial fraction expansion
1/31
Transfer functions
2/5
Poles, zeros and time response, first order systems
2/7
Second order systems
2/12
Adding poles and zeros
2/14
Block diagrams
2/19
Multiple inputs
2/21
Translating between block diagrams, transfer functions and ODEs
2/26
Introduction to stability; "bounded-input-bounded-output"
2/28
Steady-state errors and system type
3/4
Error constants
3/6
Non-unity feedback and disturbances, PID tuning
3/11
The root locus
3/13
Drawing the root locus, examples
3/25
Midterm Exam
3/27
Refining the locus: departure/arrival angles and break points
4/1
Effect of adding poles and zeros
4/3
Desing using the root locus: a) steady state error
4/8
Desing using the root locus: b) transient response
4/10
Bode plot
4/15
Bode plots of basic factors
4/17
Bode plots of general transfer functions
4/22
The Nyquist criterion and diagram (on travel)
4/24
Stability analysis based on the Nyquist diagram (on travel)
4/29
Gain and phase margin, bandwidth, error constants
5/1
Basic desing using Bode plots
5/6
Lead compensator design
5/8
Lag compensator design
5/13
Examples
5/15
Final exam (on travel)

Homework
Homework
Out
Due
1.13, 1.14      
2.21, 2.39
1/31
2/7
 
4.8, 4.17
2/7
2/14
4.20, 4.23, 2.8
2/14
2/21
5.8, 5.9
2/21
2/28
7.3, 7.12
2/28
3/6
 
notes: 4.9, 4.10
3/6
3/13
 
8.1, 8.3
3/13
3/27
 
8.42, 8.24
3/27
4/3
 
9.19, 9.23
4/3
4/10
 
10.4, 10.24
4/10
4/17
 
10.5, 10.9
4/17
4/24
 
11.8, 11.13
4/24
5/1
 

 

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