Notes for Control System Engineering - CSE by Lohit Sahoo

Introduction to Control Systems : Basic Concepts of Control Systems, Open loop and closed loop systems

Mechanical Translational Systems, Retational systems, Analogy between Mechanical and electrical quanties, Block Diagram Algebra, Signal flow Graphs, Mason’s Gain Formula.

Effect of negative feedback on sensitivity, bandwidth, Disturbance, linearizing effect of feedback, Regenerative feedback.

Standard Test Signals , Time response of first order systems to unit step and unit ramp inputs. Time Response of Second order systems to unit step input, Time Response specifications

Numericals on time response analysis

Generalised error series and Gensalised error coefficients

Response With P, PI, PD and PID Controllers

Routh stability criterion

Root locus concepts, Rules of Construction of Root locus, Root contours, Systems with transportation lag

Frequency domain specifications, correlation between Time and Frequency Response with respect to second order system, Polar plots, Bode plot. Determination of Gain Margin and Phase Margin from Bode plot.

Constant Mcircles, Constant N-Circles, Nichol’s chart.

Principle of argument, Nyquist stability criterion, Application of Nyquist stability criterion for linear feedback system.

D.C. Servomotors, A.C. Servomotors, A.C. Tachometer, Synchros, Stepper Motors.