关键词: 非线性不确定系统, 非线性PI, Smith预估器, 时滞系统

Abstract:

This paper proposes an improved method to control a nonlinear uncertain system with time-delay.In order to maintain the uniformity between the Smith-predictor and the object,a nonlinear PI controller is used to remove the influence of uncertain elements.It is proved that the proposed method can control this special system to attain ideal effects.

Key words: nonlinear uncertain system;nonlinear PI;Smith-predictor;time-delay system