Set point weighted PI/PID controllers

A systematic method is given for selection of the set point weighting parameter (b) in the PI/PID controller for stable first order plus time delay systems. The parameter b is selected to minimize the over shoot for a servo problem. The responses of the PID controllers, designed by Ziegler-Nichols method or by pole placement method, without and with the set point weighting are compared. The present method significantly reduces the overshoot.