CONTROL SYSTEM LABORATORY (18EEL66)

 CONTROL SYSTEM LABORATORY

• Course Code 18EEL66 
• CIE Marks 40
• Number of Practical Hours/Week(L:T:P) 0:2:2
• SEE Marks 60
• Credits 02 
• Exam Hours 03

Course Learning Objectives:

· To determine the time and frequency domain reposes of a given second order system using software package or discrete components.
· To design and analyze Lead, Lag and Lag – Lead compensators for given specifications.
· To draw the performance characteristics of ac and DC servomotors and synchro-transmitter receiver pair.
· To study the DC position & feedback control system and to study the effect of P, PI, PD and PID controller and Lead compensator on the step response of the system.
· To write a script files to plot root locus, bode plot, to study the stability of the system using a software  package.

Experiments

1 Experiment to draw the speed torque characteristics of (i) AC servo motor (ii) DC servo motor

2 Experiment to draw synchro pair characteristics

3 Experiment to determine frequency response of a second-order system

4 (a) To design a passive RC lead compensating network for the given specifications, viz, the maximum phase lead and the frequency at which it occurs and to obtain the frequency response.

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(b) To determine experimentally the transfer function of the lag compensating network

6 Experiment to draw the frequency response characteristics of the lag – lead compensator
network and determination of its transfer function.

7 To study a second order system and verify the effect of (a) P, (b) PI, (c) PD and (d) PID controller on
the step response.

8 (a) To simulate a typical second order system and determine step response and evaluate time
response specifications.
(b) To evaluate the effect of adding poles and zeros on time response of second order system.
(c) To evaluate the effect of pole location on stability

9 (a) To simulate a D.C. Position control systemand obtain its step response.
(b) To verify the effect of input waveform, loop gain and system type on steady state errors.
(c) To perform trade-off study for lead compensator.
(d) To design PI controller and study its effect on steady state error.

10 (a) To examine the relationship between open-loop frequency response and stability, open-loop
frequency and closed loop transient response
(b) To study the effect of open loop gain on transient response of closed loop system using
root locus.

11 (a) To study the effect of open loop poles and zeros on root locus contour
(b) Comparative study of Bode, Nyquist and root locus with respect to stability.

Description Experiment numbers

1 Perform experiments using suitable components/equipment’s 1 & 2
2 Perform experiments using suitable components/equipment’s and verify the results using standard simulation package 3,4,5,6 and 7
3 Perform simulation only using standard package 8,9,10 and 11

Click here to download lab manual

Course Outcomes: At the end of the course the student will be able to:

· Utilize software package and discrete components in assessing the time and frequency domain response of a given second order system.
· Design, analyze and simulate Lead, Lag and Lag – Lead compensators for given specifications.
· Determine the performance characteristics of ac and DC servomotors and synchro-transmitter
receiver pair used in control systems.
· Simulate the DC position and feedback control system to study the effect of P, PI, PD and
PID controller and Lead compensator on the step response of the system.
· Develop a script files to plot Root locus, Bode plot and Nyquist plot to study the stability of
the system using Conduct of Practical Exaa smoifntwatairoenp:ackage.
1. All laboratory experiments are to be included for practical examination.
2. Breakup of marks and the instructions printed on the cover page of answer script to be strictly adhered
by the examiners.
3. Students can pick one experiment from the questions lot prepared by the examiners.
4. Change of experiment is allowed only once and 15% Marks allotted to the procedure part to be made
zero.