DISCRETE-TIME REFERENCE GOVERNORS AND THE NONLINEAR CONTROL OF SYSTEMS WITH STATE AND CONTROL CONSTRAINTS

被引:255
作者
GILBERT, EG [1 ]
KOLMANOVSKY, I [1 ]
TAN, KT [1 ]
机构
[1] DEF SCI ORG,SINGAPORE 0511,SINGAPORE
关键词
NONLINEAR CONTROL; REFERENCE GOVERNOR; CONTROL SATURATION; STATE CONSTRAINTS;
D O I
10.1002/rnc.4590050508
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Discrete-time, linear control systems with specified pointwise-in-time constraints, such as those imposed by actuator saturation, are considered. The constraints are enforced by the addition of a nonlinear 'reference governor' that attenuates, when necessary, the input commands, Because the constraints are satisfied, the control system remains linear and undesirable response effects such as instability due to saturation are avoided. The nonlinear action of the reference governor is defined in terms of a finitely determined maximal output admissible set and can be implemented on-line for systems of moderately high order. The main result is global in nature: if the input command converges to a statically admissible input and the initial state of the system belongs to the maximal output admissible set, the eventual action of the reference governor is a unit delay.
引用
收藏
页码:487 / 504
页数:18
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