Control Lab experiment EEP301, 5th sem electrical engineering @ IIT Delhi

1. Experiment
LINEAR SYSTEM SIMULATOR
Aim:To analyse the effect step input on a linear system (of various order) due to various
controls.
Introduction:
Observations and remarks:
OPEN LOOP RESPONSE
Error detection cum variable gain:
With an input of 100mv, we get 1.52V i.e. gain is 15.2.
Fig. 1
Uncommitted Amplifier:
For a square wave of 1V pk-pk an output of 4.4V is obtained with gain 1 and for gain
of 10 an output of 15.6V is obtained, with inverted signal.

2. Fig 2
For gain=1
Integrator: The output for voltage is 1.08V with an input of .1 V (note that the fig is
with 10x probe).
Fig 3
Time constant:
Time constant, ∆T=1.2ms (time to rise to 63.2%)

3. Fig 4
CLOSED LOOP RESPONSE
First order system (type 1)
:
Second order system:

4. Third Order system: