一种新的改进型自适应控制方法及仿真

A New Modified Adaptive Control Method and Its Simulation

本文提出了一种新的基于超稳定性理论和仅仅利用控制对象的滤波输入和输出信号设计自适应控制的方法,并将这种方法应用于非线性液压控制系统.本方法可以不必测定对象输出量的各阶导数,采用比例+积分自适应律.研究了3阶系统跟踪2阶模型时的算法.仿真结果表明,利用本文提出的方法具有良好的跟踪性能.

A new modified adaptive control method based on the super-stability theorem is presented. In this control scheme, only the input and output filters are used. The method can be successfully applied to the nonlinear hydraulic control system, and it is not necessary to measure the higher-order derivatives of the outputs, in which the P+I adaptive law is simply employed. The algorithm of the 3rd-order system that follows the 2nd-order reference model is investigated. The results of simulation show that the better tracking performance will be easily obtained by using the method proposed in this paper.