OPTIMIZATION OF PID CONTROLLER PARAMETERS FOR SO_2 EMISSION CONTROL PROCESS USING PSO ALGORITHM

摘要

This paper presents the application of PID controller for SO_2 emission control process using Particle Swam Optimization (PSO) algorithm. To minimize the impacts of SO_2, it must be removed from flue gas. Zeiglar-Nichols based PID (ZN-PID) controller is developed for SO_2 emission control process using MATLAB/SIMULINK platform. Based on the tuning parameters of ZN-PID controller, optimization of PID controller parameters are obtained based on PSO algorithm. Performance of the PSO based PID controller is analysed and compared with Ziegler-Nichols PID controller (ZN-PID) and IMC controller in terms of time domain performance measures such as settling time and rise time (t_s and t_r) and error indices (ISE, IAE, ITAE). The simulation results proved that the PSO-PID controller provides most consistent performance as compared to the conventional controllers.