DESIGN OF SOFTER ROBUST NONLINEAR CONTROL LAWS

被引:88
作者
FREEMAN, RA [1 ]
KOKOTOVIC, PV [1 ]
机构
[1] UNIV CALIF SANTA BARBARA,CTR CONTROL ENGN & COMPUTAT,SANTA BARBARA,CA 93106
基金
美国国家科学基金会;
关键词
BACKSTEPPING; MISMATCHED UNCERTAINTIES; NONLINEAR SYSTEMS; ROBUST CONTROL;
D O I
10.1016/0005-1098(93)90007-G
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
We show that the Lyapunov function used in backstepping feedback designs for uncertain nonlinear systems leads to unnecessarily 'hard' control laws having undesirable high-gain properties. We present a new Lyapunov function and use it to design 'softer' control laws which exhibit the high-gain properties to a much lesser extent. We show that the 'soft' designs eliminate the chattering exhibited by the 'hard' designs and achieve the same or better performance with less control effort.
引用
收藏
页码:1425 / 1437
页数:13
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