EEC502 CONTROL SYSTEMS
Module I: (8 Lectures)
Concepts of system, open loop and closed loop systems, Benefits of Feedback, Mathematical
modelling and representation of physical systems, analogous systems.
Transfer functions for different types of systems, block diagrams; Signal flow graphs and
Mason‟s gain formula.
Module II (12 Lectures)
Time domain performance criterion, transient response of first order, second order systems;
Steady state errors: static and dynamic error constants, system types, steady state errors for
unity and non-unity feedback systems, performance analysis for P, PI and PID controllers.
Concept of stability by Routh stability criterion, root-loci and root contours.
Module III (8 Lectures)
Relationship between time and frequency response, Polar plots, Bode plots. Nyquist stability
criterion. Relative stability using Nyquist criterion – gain and phase margin. Closed-loop
frequency response.
Module IV: (6 Lectures)
Compensation - lag, lead and lag-lead networks, design of compensation networks using time
response and frequency response of the system.
Module V: (6 Lectures)
Concepts of state, state variables, state variable representation of system, dynamic equations,
merits for higher order differential equations and solution. Concept of controllability and
observability and techniques to test them.
Text/References:
[1].J. Nagrath and M. Gopal, “Control Systems Engineering”, New Age International,
2009
[2].M. Gopal, “Control Systems: Principles and Design”, McGraw Hill Education, 1997.
[3].B. C. Kuo, “Automatic Control System”, Prentice Hall, 1995.
[4]. K. Ogata, “Modern Control Engineering”, Prentice Hall, 1991.