Abstract:
Process control is essential in the industrial process because it guarantees the safety and
optimization in a process. Additionally, process control is a useful tool to satisfy the
environmental procedure and product quality necessities. In industries, one of the controlling
process variables are liquid level, the liquid level controllers are a significant concern popular
process and collective illustrative also real-world in engineering methods. Liquid level coupled
tank system can be arranged into two fashionable forms of interacting and non- interacting form.
In this thesis work only focus on interacting coupled tank control systems, there are many
problems which affected the liquid level like nonlinearity of the system, modeling uncertainties
and complex analysis, so to overcome those problems, and obtain constant stable output and fast
response various controllers are required.
Industrial control engineering requires fluid moved and reserved in a container. This thesis work
presents the performance analysis of fractional order-PID controller for governing a liquid level
of the tank system. Also for more validation of this work test other method of controllers.
Various types of fractional-order (FOPID, TID, CRONE, and FOLL) controller and from those
fractional order controller techniques FOPID and TID control will be tested to get compare the
performance of interacting coupled tank system.
The output response is conducted within MATLAB®/Simulink® situation to verify the
performances of the system in terms of rising Time (Tr), settling time (Ts), delay time (Td), peak
time (Tp), undershoot and Overshoot (Os). The simulation result shows that controlling
interacting CTS without disturbance the response is good, but including external disturbance on
the second tank the controllers tested on this work is show week response except FOPID
controller. The reason is FOPID controller has two more adjust parameter those increase the
robustness of the system. From the controllers tested in this thesis work the fractional order
proportional integral derivative controller (FOPID) has good performance compare to PID, TID,
and digital-PID controllers that tested on this thesis. The performance specification of FOPID
controller Os is 14.368%, Tp is 1.014sec, Td is 0.338sec, Ts is 3.581sec and Tr is 336.485ms𝑒𝑐.
