This project is about the PID tank system. The mathematical model of this system is given in detail for proper simulation of this project. These tanks are controlled by setting the values of Q that is flow of any liquid that is present in these tanks. In the starting part of this project there is design of Simulink model of PID tank system. This response will be open loop system, and for this system the values are given that will be helpful for simulation.

Then after this in the next part there will be proper design of On-Off controller for the controlling of the liquid in these tanks. These responses are plotted during simulation. In the third part of this project there is design of PID controller in detail and its step response is plotted. According to the PID, what will be the transient response of the system? Then by setting the PID controller its response will be verified in detail. The case is simulated in which the value of actuator is saturated. The anti-windup feature of the system will be simulated and its results are compared. Then in the last part complete performance of the PID controller and sensor has been tested and its results will be compared in detailMathematical model of PID tank system

For PID tank system 1

For this let us suppose linear resistance

Find out the time constant of tank 1

Working for PID tank system 2

Let’s suppose it’s a linear resistance to flow from this

Time constant will be

By taking laplace of this function

After solving all the equations

Open loop Simulink model of PID tank system

PID tanks system Controller setting through tuning

This is basically PI controller this value has been set according to the tuning

Proportional =1.599340

Integral =0.079967

This controller in parallel form

Output of PID tanks system

Closed loop PID tanks system

Designing of On-Off system of the controller PID tanks system

Designing of PID controller

Discussion on PID tanks system controller

This controller is designed for checking the level of liquid and these results are showing in proper way. The yellow line is with the help of PID controller and the purple line showing the normal working.

Use of anti-windup feature of PID tanks system

Results and discussion from this feature of PID tanks system

Conclusion on PID tanks system

Summing up all the discussion from above it is concluded that the PID tank system is extremely valuable for chemical industries. In this report there is complete demonstration of the system in detail. The complete working of PID tanks has been shown in this report with proper working condition.