Analysis of Conventional and Fractional-Order Controllers for Nonlinear CSTR System

Abstract

In chemical engineering science, controlling temperature using nonlinear system is a very important task and continuous stirred tank reactor (CSTR) acts as a center of chemical process to control temperature at plant. In this work, to control temperature, IOPID and FOPID controllers have been tested on CSTR nonlinear model and simulation study has been performed. Fractional-order PID controller has been designed using RL fractional calculus method and plays advanced role using two degree of freedoms. PSO optimization algorithm has been used to optimize the parameters of controllers selecting ITAE as single objective function. Now, to stabilize the heat at satisfactory level, internal model control (IMC)-based FOPID controller followed by a novel technique on set point weighted-based IMC-FOPID has been approached to filter the performance of the system comparing with other controllers in simulation.