Optimization of PID controller for Automatic voltage regulator system using Taguchi method

Abstract

This paper presents a optimization of PID controller using Taguchi method for Automatic voltage regulator system. Taguchi method has orthogonal array that depends on number of factors and their levels. Taguchi method is useful when system parameters are subjected to change in a given range. This method reduces the variability of the response by reducing the number of experiments. The number of experiments can be reduced by varying the multiple factors together. This reduces computational burden on the AVR system. The main objective of this method is to find the combination of factors such that the system has lower values of overshoot, Rise time, settling time and steady state error. MINITAB 17 software is used for taguchi approach. MATLAB/Simulink software is used for the simulation. This response is then compared with fuzzy logic controller. PID optimized with Taguchi method has better dynamic response than fuzzy logic controller method.