ANNA UNIVERSITY CHENNAI: CHENNAI – 600 025
B.E DEGREE PROGRAMME :ELECTRONICS AND INSTRUMENTATION ENGINEERING
(Offered in Colleges affiliated to Anna University)
CURRICULUM AND SYLLABUS – REGULATIONS – 2004
SEMESTER V

IC 1251 CONTROL SYSTEMS

AIM
To provide sound knowledge in the basic concepts of linear control theory and design of control system.

OBJECTIVES
i. To understand the methods of representation of systems and getting their transfer function models.
ii. To provide adequate knowledge in the time response of systems and steady state error analysis.
iii. To give basic knowledge is obtaining the open loop and closed–loop frequency responses of systems.
iv. To understand the concept of stability of control system and methods of stability analysis.
v. To study the three ways of designing compensation for a control system.

1. SYSTEMS AND THEIR REPRESENTATION 9
Basic elements in control systems – Open and closed loop systems – Electrical analogy of mechanical and thermal systems – Transfer function – Synchros – AC and DC servomotors – Block diagram reduction techniques – Signal flow graphs.

2. TIME RESPONSE 9
Time response – Time domain specifications – Types of test input – I and II order system response – Error coefficients – Generalized error series – Steady state error – P, PI, PID modes of feed back control.

3. FREQUENCY RESPONSE 9
Frequency response – Bode plot – Polar plot – Constant M and N circles – Nichols chart – Determination of closed loop response from open loop response – Correlation between frequency domain and time domain specifications.

4. STABILITY OF CONTROL SYSTEM 9
Characteristics equation – Location of roots in S plane for stability – Routh Hurwitz criterion – Root locus construction – Effect of pole, zero addition – Gain margin and phase margin – Nyquist stability criterion.

5. COMPENSATOR DESIGN 9
Performance criteria – Lag, lead and lag-lead networks – Compensator design using bode plots.

L = 45 T = 15 Total = 60
TEXT BOOKS
1. K. Ogata, ‘Modern Control Engineering’, 4th edition, Pearson Education, New Delhi, 2003 / PHI.
2. I.J. Nagrath & M. Gopal, ‘Control Systems Engineering’, New Age International Publishers, 2003.

REFERENCE BOOKS
1. B.C. Kuo, ‘Automatic Control Systems’, Prentice Hall of India Ltd., New Delhi, 1995.

2. M. Gopal, ‘Control Systems, Principles & Design’, Tata McGraw Hill, New Delhi, 2002.

3.M.N. Bandyopadhyay, ‘Control Engineering Theory and Practice’, Prentice Hall of India, 2003.

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