Development of optimal PID controller for wastewater treatment plant

Sia, Yok Kit (2021) Development of optimal PID controller for wastewater treatment plant. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The goal of this work is to develop an optimal PID controller for a wastewater treatment plant. Although PID control strategies are frequently applied to WWTP, the limitation of PID is still available. The limitations of the fixed-gain PID is time consuming and inefficient especially when applied to complex dynamic system, while poor plant performance is resulted. Therefore, in this study, the PSO algorithm optimization technique is used in a PID controller to identify the optimum optimal parameters for a wastewater treatment plant (WWTP).By using this method, the gains of the PID controller and the non linear gains are well optimized. Comparison between the classical non linear PID and the PSO-PID will be analyzed. The performance of nonlinear system and the output will be only observed and analyzed in the time domain. As a result, the lowest IAE and ISE error between the input and output of the WWTP will be the best performances. The analysis of the system will be one of the research's outcomes. The simulation is conducted in MATLAB SIMULINKplatform.

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