EC2255CONTROL SYSTEMS 
CONTROL SYSTEM MODELING 
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 
TIME RESPONSE ANALYSIS 
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 
FREQUENCY RESPONSE ANALYSIS 
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, seriesparallel Compensators  Lead, Lag, and Lead Lag Compensators, Analysis using MATLAB. 
STABILITY ANALYSIS 
Stability, RouthHurwitz Criterion, Root Locus Technique, Construction of Root Locus, Stability, Dominant Poles, Application of Root Locus Diagram  Nyquist Stability Criterion  Relative Stability, Analysis using MATLAB 
STATE VARIABLE ANALYSIS & DIGITAL CONTROL SYSTEMS 
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. 
REFERENCE 
Text Books 
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. 
Reference Books 
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 McGrowHill, Inc., 1995.
5.Richard C. Dorf & Robert H. Bishop, “ Modern Control Systems”, Addidon – Wesley, 1999. 
