Introductory Concepts :
Plant, Systems, Servomechanism, regulating systems, disturbances, Open loop control systems, closed loop
control systems, linear and non- linear systems, time variant & invariant, continuous and sampled data control
systems, illustrative examples.
Modellinq :
Formulation of equation of linear electrical, mechanical, thermal, pneumatic and hydraulic systems, electrical
and mechanical analogies. Use of Laplace transform, Transfer function, concepts of state variable modelling.
Block diagram representation, signal flow graphs and associated algebra, characteristics equation.
Time Domain Analysis :
Typical test -input signals, Transient response of the first and second order systems. Time domain
specifications, Dominant closed loop poles of higher order systems. Steady state error and co-efficient, polezero
location and stability, Routh-Hurwitz Criterion.
Root Locus Technique :
The extreme points of the root loci for positive gain. Asymptotes to the loci, Breakaway points, intersection
with imaginary axis, location of roots with given gain & sketch of the root locus plot. .
Frequency Domain Analysis:
Closed loop frequency response, Bode plots, stability and loop transfer function. Frequency response
specification, Relative stability, Relation between time and frequency response for second order systems. A
and N- circles, log. Magnitude versus Phase angle Plot, Nyquist criterion.
Compensation :Necessity of compensation, series and parallel compensators, compensating network,
application of lag and lead compensation.
Control Components: Error detectors- potentiometers and synchros, servo motors, A.C. and D.C.
techogenerators, Magnetic amplifiers.