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from Level control of two tanks in series by Housam Binous
Program solves the level control of two tank arranged in series using PID controller.

LevelControl.m
A1=4;
A2=3;                
K1=0.5;               
K2=1.2;               
F0=1;               
F30=1;                
F3AMP=0.5;            
h2set=2;              
Kp=4;
sim('TwoTanksLevelControl');
figure(1);
plot(t,h1,'r');
hold on;
plot(t,h2,'b');
xlabel('time');
ylabel('tank levels');
figure(2);
xlabel('time');
ylabel('flow rates');
plot(t,F1,'r');
hold on;
plot(t,F2,'b');

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