EC IV SEM

RAJIV GANDHI PROUDYOGIKI VISHWAVIDYALAYA, BHOPAL

New Scheme Based On AICTE Flexible Curricula

Electronics & Communication Engineering IV-Semester

EC404 Control System

Unit-1 Introduction to Control system: Terminology and classification of control system,

examples of control system, mathematical modeling of mechanical and electrical systems,

differential equations, transfer function, block diagram representation and reduction, signal flow

graph techniques.

Feedback characteristics of control systems Open loop and closed loop systems, effect of

feedback on control system and on external disturbances, linearization effect of feedback,

regenerative feedback

.Unit-2 Time response analysis Standard test signals, time response of 1st order system, time

response of 2nd order system, steady-state errors and error constants, effects of additions of

poles and zeros to open loop and closed loop system.

Time domain stability analysis Concept of stability of linear systems, effects of location of

poles on stability, necessary conditions for stability, Routh-Hurwitz stability criteria, relative

stability analysis, Root Locus concept, guidelines for sketching Root-Locus.

Unit-3 Frequency response analysis Correlation between time and frequency response, Polar

plots, Bode Plots, all-pass and minimum-phase systems, log-magnitude versus Phase-Plots,

closed-loop frequency response.

Frequency domain stability analysis : Nyquist stability criterion, assessment of relative stability

using Nyquist plot and Bode plot (phase margin, gain margin and stability).

Unit-4 Approaches to system design Design problem, types of compensation techniques, design

of phase-lag, phase lead and phase lead-lag compensators in time and frequency domain,

proportional, derivative, integral and Composite Controllers.

Unit-5 State space representation of systems, block diagram for state equation, transfer

function decomposition, solution of state equation, transfer matrix, relationship between state

equation and transfer function, controllability and observability.

Text/Reference Books:

1. Albert D. Helfrick, William David Cooper, “Modern electronic instrumentation and

measurement techniques”, TMH 2008.

2. Oliver Cage, “Electronic Measurements and Instrumentation”, TMH, 2009.

3. Alan S. Morris, “Measurement and Instrumentation Principles”, Elsevier (Buterworth

Heinmann), 2008.

4. David A. Bell, “Electronic Instrumentation and Measurements”, 2nd Ed., PHI, New Delhi

2008.

5. H.S. Kalsi, “Electronics Instrumentation”, TMH Ed. 2004

6. A.K.Sawhney, “A Course in Electrical and Electronic Measurements and

Instrumentation”, Dhanpat Rai.

7. MMS Anand, “Electronic Instruments & Instrumentation Technology”, PHI Pvt. Ltd., New

Delhi Ed. 2005

CONTROL SYSTEM LAB

Control System performance analysis and applications of MATLAB in Control system

performance analysis & design.