Subject Code: EE3L003	Name: Control Systems	L-T-P: 3-1-0	Credits: 3
Pre-requisite(s):    Signals and Systems
Introduction: Components of feedback control systems, Practical examples of open-loop and closed-loop systems; Mathematical models of Physical Systems: Block diagram reduction, Signal flow graphs; Basic characteristics of feedback control systems: Stability-- Concept of stability, Closed-loop systems, Routh Hurwitz Criterion, Time response specifications-- damping coefficient, natural frequency, peak-overshoot, settling time, rise time, steady state errors, Frequency response specifications-- peak and peaking frequency, bandwidth and cut-off rate, Correlation between time-domain and frequency domain specifications; Stability and relative stability analysis: Root Locus method, Nyquist stability criterion, Gain and phase margins; Compensation techniques: Performance goals -- Steady-state, transient and robustness specifications, PID, lag-lead and algebraic approaches for controller design; Sampled-data systems: Sample and hold operations, Sampling theorem, z-transform, Stability and response of sampled-data systems; State variable Analysis: Concepts of states, State variables, State model, State models for linear continuous time systems, Diagonalization of transfer function, Solution of state equations, Concept of controllability & observability.
Texts/Reference Books: B. C. Kuo, ‘Automatic Control Systems’, Wiley, 2003 K. Ogata, Modern Control Engineering, Prentice Hall, 1997 R. C. Dorf and R. H. Bishop, ‘Modern Control Systems’, Pearson Education, Inc, 2008. W. A. Wolovich, ‘Automatic Control Systems’, Saunders College, 1994 R. T. Stefani, ‘Design of Feedback Control Systems’, Oxford University Press, 2002.