COMSATS University Islamabad
Complex Engineering Problem
Report
Course:
Control Systems (EEE325)
Instructor:
Engr. Imtiaz-Ur-Rehman
Students:
Names
Muhammad Inamullah
Registration No
FA18-BEE-091
(Do not write anything here)
1. Heat exchange process: Error! Reference source not found. shows a heat-exchanger
process whose purpose is to maintain the temperature of a liquid at a prescribed
temperature. The temperature is measured using a sensor and a transmitter, TT 22, that
sends the measurement to a corresponding controller, TC 22, that compares the actual
temperature with a desired temperature set point,
. The controller automatically opens
or closes a valve to allow or prevent the flow of steam to change the temperature in the
tank. The corresponding block diagram for this system is shown in Error! Reference
source not found.. Assume the following transfer functions:
( )=
.
,
( )=
,
( )=
.
Task 02
Matlab Code
%task 02
%%
% part a;
clear all;
close all;
s=tf('s');
Gv=0.02/(4*s+1);
Gs=70/(50*s+1);
Hs=1/(12*s+1);
o1=series(Gv,Gs);
o2=series(o1,Hs);%final output for G(s)
figure(1);
pzmap(o2) %finding poles and zeros for G(s)
grid on;
%%
% part b
figure(2);
step(o2) %response with step input
Explanation
From the above figure, it is clear that the open loop transfer function has no zeros and poles at 0.25,-0.0833 and -0.25.
Explanation
For the unit step input, the damping ration zeta =1. Therefore the nature of transient response is
critically damped.
TASK 03
TASK 04
Without PID controller
With PID controller