自适应控制系统动态性能的改进  

Improvement of the Transient Performance for Adaptive Control Systems

作　　者：陈传祥[1] 高庆祥 

机构地区：[1]济宁学院物理系,山东曲阜273155 [2]梁山县韩垓镇第一初级中学,山东梁山272616

出　　处：《济宁学院学报》2008年第6期10-15,共6页Journal of Jining University

摘　　要：本文研究了一种旨在改进自适应控制系统动态性能的模型参考自适应控制新方案,通过适时变换自适应律增益和引入静态补偿器,减少系统在自适应调整的初始阶段振荡的幅度和调节时间,提高系统收敛的速度,改善系统跟踪误差的瞬态行为,从而显著地提高系统的鲁棒性和跟踪性能。仿真例子印证了该方案的有效性。A new modified model reference adaptive control scheme aimed at improving the transient performance of adaptive systems was studied in the paper. The switched gain of adaptive law and the statistic compensator in the new scheme eliminate the undesirable phenomena, such as reducing the amplitude of oscillation and regulate time during the initial stages of adaptation, improve the rate of convergence of trace error and the transient behavior, then robustness and tracking performance are enhanced obviously. A simulation example is given to illustrate the efficiency of the proposed scheme.

关 键 词：MRAC 切换自适应律 跟踪误差 鲁棒性和跟踪性能 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]