CONTROL SYSTEMS

EE 241                                                                       No. of Hrs/week = 03 + 03(EC)

                                                                                    No. of Credits = 03 (04 for EC)

Concept of Control Systems: Basic terminology, open-loop and closed-loop systems. - 2 hrs.

Control System Models: Dynamic models, transfer function models, state variable models, block diagram representation, block diagram reduction, signal flow graphs, Mason’s gain formula. - 8 hrs.

Dynamic Response: Step and impulse responses of first and second order systems, time domain specifications, frequency response specifications. - 5 hrs.

Errors: Steady state errors, error constants, dynamic error coefficients, error series. - 3 hrs.

Controllers: Proportional control, PI, PD and PID controllers. - 2 hrs.

Stability: BIBO stability, effect of location of roots of characteristic equation in the s-plane on stability, Routh-Hurwitz criterion, applications. - 3 hrs.

Stability Analysis:

Bode plots, asymptotic plot, gain margin and phase margin. - 3 hrs.

Root locus, construction rules for positive K, interpretation of system response from root locus plots. - 5 hrs.

Polar plots, Nyquist diagrams, Nyquist criterion for stability. - 3 hrs.

Control System Design: Cascade compensation, phase lead and phase lag compensation, design via root locus, design via Bode plot. - 6 hrs.

References:

1. Stanley M. Shimmers, “Modern Control System Theory and Design”.
2. Norman S. Nise, “Control System Engineering”.
3. Richard C. Dorf, Robert H. Bishop, “Modern Control Systems”.
4. Morris Driels, “Linear Control System Engineering”.

CONTROL SYSTEM LABORATORY

Using MATLAB Control System tool box:

1. MATLAB familiarity.
2. Elementary operations.
3. Transformations.
4. Time domain responses.
5. Frequency domain responses.
6. Routh-Hurwitz test.
7. Bode plot.
8. Polar plot.
9. Nyquist plot.
10. Root locus plot.