时滞过程的预估变模控制

Pre-estimating and Varistrurture Control for the Process of Time-Delay

针对时滞过程，本文提出一种预估及变模控制方法。在预估基础上分阶段采用极值、开环恒值及闭环ＰＩ来加快上升，抑制超调，增强抗扰能力。其预估控制器不需时滞环节，电路实现较Ｓｍｉｔｈ预估控制器简单。性能分析、仿真及实际应用结果表明了其可行性。

Countering the process of time-delay,a method for pre-estimating and varistructure controlling is proposed in this paper.According to the analysis,the extreme value and the constants in open-loop & PI of closed loop are adopted in different steps to speed up the rising and restraining of the over-shooting of the process and to enhance the ability of anti-interference.Its pre-estimator needs no time-delay link,while its circuit is easier to be implemented than that of Smith's pre-estimator.It is shown by the performance analysis,simulating and the results of application that it is practicable.