WITH EFFECT FROM THE ACADEMIC YEAR 2012 - 2013

 

ME 355

CONTROL SYSTEMS THEORY

 

Instruction                                             4               Periods per week

Duration of University Examination     3               Hours

University Examination                         75             Marks

Sessional                                                25             Marks

 

UNIT-I

 

Control Systems Classification: Open Loop & Closed Loop Systems. Mathematical models and Transfer functions from governing equations of mechanical, electrical, hydraulic, pneumatic, thermal systems. AC, DC servomotors & Electromechanical servo systems.

 

UNIT-II

 

Block diagrams-Block diagram reduction. Signal flow graphs, Mason’s gain formula. Transient response. Time domain specifications of 1st and 2nd order systems. Steady state error, Error coefficients, sensitivity Performance indices. Routh criteria.

 

UNIT-III

 

Routh criteria-Root Locus method. Frequency Response: Bode, Polar plots. Correlation between transient and frequency response. Bandwidth. Experimental determination of transfer functions.

 

UNIT-IV

 

Nyquist criteria. Gain and phase margins, Lead, Lag and Lead-lag compensator design, PID controller, linearization of Non linear systems,

 

UNIT-V

 

State-space representation of linear control systems. State transition matrix. Solution of state equations: Zero input response and Zero state response. Concept of controllability and observability.

 

Suggested Reading:

 

  1. 1.Dorf, R. C., “Modern Control Systems “, Addison-Wesley 1989.

 

  1. 2.M. Gopal, “Control Systems “, Tata McGraw Hill, 2004.

 

  1. 3.Ogata, K., “Modern Control Engineering”, Prentice Hall, 2004.

 

  1. 4.Norman S. Nise, “Control Systems Engineering “, John Wiley & Sons, Inc., 2001.
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