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MECH 261 CONTROL PRINCIPLES

Spring 2010

Instructor: Lilong Cai (Room 2549, Tel: 7209, e-mail: melcai)

T.A: Jim Jiang and Zeng Long (Room 4226, Tel. 2358-8815,email: mejjm@ust.hk, zelog@ust.hk )

Course Description:Introduce to basic control concepts, system equation, block

diagrams, signal flow graphs, transient response using convolutionintegral, root locus and frequency response methods. Designcontroller using root locus, frequency response, and phasecompensation techniques, Nyquist stability test.

Grading Policy: Homework and Lab. 20%Midterm Exam: 35%Final Exam: 45%

Textbook:. MODERN CONTROL SYSTEMS, 11th 0r 10th edition, by RichardC. Dorf.

Supplementary Texts: Modern Control Engineering, 3nd edition, byKatsuhiko OgataFeedback Control of Dynamic Systems, 2nd edition,

by G. F. Franklin, J. D. Powell and A. Emami-Naeini.

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What is Control?

Do you use control today?

What do you do, if you feel?

ControlChange

Time, system, variables, input and output

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How To Succeed In This Course

After ClassReview material (notes and textbook)Identify and understand key issues

Do all the problem sets assigned in time

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Actual wages=Initial wages + Wage increase

Positive feedback

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Error=input (desired output) - Measured output

Negative feedback

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Examples?

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Open-loop control

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?

?

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Speed Governor

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Examples

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Examples

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Positive feedback

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Examples

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Example

Murata Boy, the Robot that can Ride

Bicycles

http://www.youtube.com/v/Srwk-i5aXRQ&rel=1