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U n i t - 1
IntroductIon
Concepts of system, Control systems: Open loop and closed loop control systems and their differences. Different
examples of control systems, Feed-back characteristics, Effects of feedback. Mathematical models, Differential
equations, Impulse response and transfer functions. Translational and rotational mechanical systems
U n i t - 2
trAnSFEr FunctIon rEPrESEntAtIon
Transfer function of D.C servo motor – A.C Servo motor – Synchro – Transmitter and receiver, Block diagram
representation of systems considering electrical systems as examples – Block diagram algebra – Representation
by signal flow graph – Reduction using mason’s gain formula.
tIME rESPonSE AnALYSIS
Standard test signals – Time response of first order systems – Characteristic equation of feedback control
systems, Transient response of second order systems – Time domain specifications – Steady state response
– Steady state errors and error constants.
U n i t - 3
StABILItY AnALYSIS In S-doMAIn
The concept of stability – Routh’s stability criterion – Qualitative stability and conditional stability – Limitations
of Routh’s stability.
root LocuS tEchnIquE
The root locus concept – Construction of root loci – Effects of adding poles and zeros to G(s)H(s) on the
root loci.
U n i t - 4
FrEquEncY rESPonSE AnALYSIS
Introduction, Correlation between time and frequency response, Polar plots, Bode plots, Nyquist stability criterion.
U n i t - 5
cLASSIcAL controL dESIGn tEchnIquES
Compensation techniques – Lag, Lead, Lead-lag controllers design in frequency domain, PID controllers.
State space analysis of continuous systems. Concepts of state, State variables and state model, Derivation
of state models from block diagrams, Diagonalization – Solving the time invariant state equations – State
transition matrix and it’s properties – Concepts of controllability and observability