Optimal control of switching surfaces in hybrid dynamical systems

被引:51
作者
Boccadoro, M [1 ]
Wardi, Y
Egerstedt, M
Verriest, E
机构
[1] Univ Perpignan, Dipartimento Ingn Elettron & Informaz, I-06125 Perugia, Italy
[2] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源
DISCRETE EVENT DYNAMIC SYSTEMS-THEORY AND APPLICATIONS | 2005年 / 15卷 / 04期
基金
美国国家科学基金会;
关键词
hybrid systems; switching surfaces; optimal control; gradient descent; obstacle avoidance;
D O I
10.1007/s10626-005-4060-4
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper concerns an optimal control problem defined on a class of switched-mode hybrid dynamical systems. The system's mode is changed (switched) whenever the state variable crosses a certain surface in the state space, henceforth called a switching surface. These switching surfaces are parameterized by finite-dimensional vectors called the switching parameters. The optimal control problem is to minimize a cost functional, defined on the state trajectory, as a function of the switching parameters. The paper derives the gradient of the cost functional in a costate-based formula that reflects the special structure of hybrid systems. It then uses the formula in a gradient-descent algorithm for solving an obstacle-avoidance problem in robotics.
引用
收藏
页码:433 / 448
页数:16
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