Design and Performance Analysis of Ann based Hybrid PID Controller for Liquid Level Control System

G.V Phaneendar kumar; I Srinu; Dr. K Satyanarayana

Volume : III, Issue : IX, September - 2014

Design and Performance Analysis of Ann based Hybrid PID Controller for Liquid Level Control System

G. V Phaneendar Kumar, I Srinu, Dr. K Satyanarayana

Abstract :

In general, PID controller is designed to suit for offline conditions based on certain algorithms put in the process. But controllers used in online conditions are unable to reject the nonlinear disturbances which occur in the system during entire range operation. In order to overcome this drawback in conventional design, this paper proposes an intelligent approach like Artificial Neural Networks (ANN) for disturbance rejection in the system by designing the controller in online conditions the PID controllers gains are altered i.e. online in accordance with the disturbances to reject .The proposed intelligent PID controller design method is based on pessen�s tuning algorithm for rejection of different disturbance. To validate the proposed method, a liquid level control of a process tank is considered and an intelligent PID controller is designed using the Artificial Neural Network .The designed intelligent PID controller is simulated under different disturbances using MATLAB/Simulink and results are successfully verified.