Introduction : Open-loop and closed-loop systems, servomechanisms and regulator systems; Transfer function; Block diagram reduction; Signal flow graphs.
Mathematical models of Physical Systems: Mechanical translational and rotational systems, gear trains; D.C. generator and motor; Transportation Lag Systems. Components of feedback control systems: Potentiometers as error sensing devices, synchros, a.c. servo motor; tachometers.
Stability: Concept of stability, necessary and sufficient conditions of stability; Closed-loop systems, merits and demerits; Routh Hurwitz Criterion.
Transient Response: Typical inputs, convolution integral; Time domain specifications, steady state errors.
Frequency Response: Definition, equivalence between transient response and frequency response; Bode plots.
Nyquist stability criterion: Development of the criterion; Gain and phase margins; M circles and Nichol's chart.
Root Locus method: Rules for sketching of root loci; Root contours.
State space representation of control systems.
Synthesis: Lag and lead network; Proportional, derivative and Integral controllers.