Design of a PID Controller using a Fictitious Exogenous Signal for a Fluctuation System

Abstract

The fictitious reference iterative tuning method is used to design Proportional-Integral-Derivative (PID) controllers to achieve desired performance for industrial machines. However, the desired control performance cannot be obtained by this method, if the system characteristics changed in steady state. In this paper, design method of a PID controller using the Fictitious Exogenous Signal is proposed. The change of system characteristics is considered as an impulse-like virtual disturbance. The Fictitious Exogenous Signal to calculate PID parameters is obtained from a set of operational data. The effectiveness of the proposed method has been verified by numerical examples.