For Online Students

To Download 4th sem ->EC2255 CONTROL SYSTEMS SYLLABUS CLICK HERE
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.

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