Intelligent PI Controller for Speed Control of SEDM using MATLAB

--Abstract-The separately excited Direct current (DC) motors with conventional Proportional Integral (PI) speed controller are generally used in industry. This can be easily implemented and are found to be highly effective if the load changes are small. However, in certain applications, like rolling mill drives or machine tools, where the system parameters vary substantially and conventional PI or PID controller is not preferable due to the fact that, the drive operates under a wide range of changing load characteristics. The development of artificial Neural Network controller for D.C drives in the present the new ability of ANNs in estimating speed and controlling the separately excited D.C. motor, The neural control scheme consist of neural controller, which is used to generate a control signal for converter. ANN has different size of hidden layers according to different control strategies with “trainlm” training function [15].The aim of this proposed scheme tracking performance of separately excited D.C. motor and compare with the conventional (PI) control strategy [6]. Performance of these new controllers has been verified through simulation using MATLAB/SIMULINK package.