Extremum-seeking control for steady-state performance optimization of nonlinear plants with time-varying steady-state outputs

被引:0
作者
Hazeleger, Leroy [1 ]
Haring, Mark [2 ]
van de Wouw, Nathan [1 ,3 ,4 ]
机构
[1] Eindhoven Univ Technol, Dept Mech Engn, POB 513, NL-5600 MB Eindhoven, Netherlands
[2] Norwegian Univ Sci & Technol, Dept Engn Cybernet, N-7491 Trondheim, Norway
[3] Univ Minnesota, Dept Civil Environm & Geoengn, Minneapolis, MN 55455 USA
[4] Delft Univ Technol, Delft Ctr Syst & Control, NL-2628 CD Delft, Netherlands
来源
2018 ANNUAL AMERICAN CONTROL CONFERENCE (ACC) | 2018年
关键词
STABILITY; FEEDBACK; SYSTEMS;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Extremum-seeking control is a useful tool for the steady-state performance optimization of plants for which the dynamics and disturbance situation can be unknown. The case when steady-state plant outputs are constant received a lot of attention, however, in many applications time-varying outputs characterize plant performance. As a result, no static parameter-to-steady-state performance map can be obtained. In this work, an extremum-seeking control method is proposed that uses a so-called dynamic cost function to cope with these time-varying outputs. We show that, under appropriate conditions, the solutions of the extremum-seeking control scheme are uniformly ultimately bounded in view of bounded and time-varying external disturbances, and the region of convergence towards the optimal tunable plant parameters can be made arbitrarily small. Moreover, its working principle is illustrated by means of the performance optimal tuning of a variable-gain controller for a motion control application.
引用
收藏
页码:2990 / 2995
页数:6
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