PID Tuning Using Bat Algorithm For Coupled Tank Liquid Level System

Mohamad Aris Iqqhwan , Alizan (2015) PID Tuning Using Bat Algorithm For Coupled Tank Liquid Level System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project describes about controlling liquid level for a coupled tank system (CTS). Many industrial processes use the concept of the liquid level control of coupled tank system. The system operated by the liquid pumped into the tank, stored and drained as repeatable process, for example a chemical process that mostly in oil and gas. To maintain the level of the liquid in the tank, a controller needs to be implemented in the system. The level of liquid depends on the set point when the liquid is pumped out. Time by time, the parameter of the system will slightly change due to the disturbance. Therefore, the controller must use optimization technique as the control tuning in order to find the optimal parameter value to overcome the problem for coupled tank liquid level system. In this project, the proportional-integral-derivative (PID) control tuning using a BAT algorithm by using MATLAB and Simulink. The transient system performance will be evaluated and compared with Cuckoo Search (CS) algorithm in terms of overshoot percentage settling time, rise time and steady state error. The error value of the system can be obtained from performance index, integral of time square error (ITSE) and it will be used in optimization technique in order to get the PID parameter of the system. The expected result from this project is BAT algorithm will give a better performance compared to Cuckoo Search (CS) algorithm as BAT algorithm is more flexible in finding the optimal parameter.

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