EC2255 CONTROL SYSTEMS SYLLABUS

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AIM

To familiarize the students with concepts related to the operation analysis and

stabilization of control systems

OBJECTIVES

 To understand the open loop and closed loop (feedback ) systems

 To understand time domain and frequency domain analysis of control systems

required for stability analysis.

 To understand the compensation technique that can be used to stabilize control

systems

1. CONTROL SYSTEM MODELING 9

Basic Elements of Control System – Open loop and Closed loop systems - Differential

equation - Transfer function, Modeling of Electric systems, Translational and rotational

mechanical systems - Block diagram reduction Techniques - Signal flow graph

2. TIME RESPONSE ANALYSIS 9

Time response analysis - First Order Systems - Impulse and Step Response analysis of

second order systems - Steady state errors – P, PI, PD and PID Compensation, Analysis

using MATLAB

3. FREQUENCY RESPONSE ANALYSIS 9

Frequency Response - Bode Plot, Polar Plot, Nyquist Plot - Frequency Domain

specifications from the plots - Constant M and N Circles - Nichol’s Chart - Use of

Nichol’s Chart in Control System Analysis. Series, Parallel, series-parallel Compensators

- Lead, Lag, and Lead Lag Compensators, Analysis using MATLAB.

4. STABILITY ANALYSIS 9

Stability, Routh-Hurwitz Criterion, Root Locus Technique, Construction of Root Locus,

Stability, Dominant Poles, Application of Root Locus Diagram - Nyquist Stability Criterion

- Relative Stability, Analysis using MATLAB

5. STATE VARIABLE ANALYSIS & DIGITAL CONTROL SYSTEMS 9

State space representation of Continuous Time systems – State equations – Transfer

function from State Variable Representation – Solutions of the state equations -

Concepts of Controllability and Observability – State space representation for Discrete

time systems. Sampled Data control systems – Sampling Theorem – Sample & Hold –

Open loop & Closed loop sampled data systems.

TOTAL : 45 PERIODS

26

TEXTBOOK:

1. J.Nagrath and M.Gopal,” Control System Engineering”, New Age International

Publishers, 5th Edition, 2007.

2. M.Gopal, “Control System – Principles and Design”, Tata McGraw Hill, 2nd

Edition, 2002.

REFERENCES:

1. Benjamin.C.Kuo, “Automatic control systems”, Prentice Hall of India, 7th

Edition,1995.

2. M.Gopal, Digital Control and State Variable Methods, 2nd Edition, TMH, 2007.

3. Schaum’s Outline Series,’Feedback and Control Systems’ Tata McGraw-

Hill, 2007.

4. John J.D’azzo & Constantine H.Houpis, ’Linear control system analysis and

design’, Tata McGrow-Hill, Inc., 1995.

5. Richard C. Dorf & Robert H. Bishop, “ Modern Control Systems”, Addidon –

Wesley, 1999.