A PI Controller with Adaptive Parameter Tuning

Abstract

This paper is concerned in a PI controller with adaptive parameter tuning. The PI parameters are adjusted automatically by using a high-gain adaptive control strategy. It is shown that the closed system is stable and the output error goes to zero when the proposed PI controller is applied to minimum phase plants with relative degree one. We also present a compensation method for plants with relative degree more than two so that the proposed controller will be applicable. Finally, some simulation results are given to illustrate the performance of the proposed controller.