Adaptive control with nearest-neighbor previous instant compensation for discrete-time nonlinear strict-feedback systems

Chenguang Yang, Hongbin Ma, Bin Xu, Mengyin Fu

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

Many nonlinear systems can be modeled by or converted to strict-feedback forms, whose stabilization problem without modeling uncertainties has been extensively discussed in the literature. However, in practice, inevitable modeling uncertainties, especially co-existence of parametric uncertainties and nonparametric uncertainties, will make it very difficult and challenging to achieve desirable control performance. In this background, we consider a challenging adaptive control problem, aiming at asymptotic tracking to any bounded reference signal, in the presence of periodic uncertainties of both parametric and nonparametric types, i.e., periodic time-varying parameters and periodic unknown time-delays in the uncertain nonlinearities, for a class of strict-feedback discrete-time nonlinear systems due to the lack of related research and the increasing demand of digital control in current epoch. To deal with the co-existing various uncertainties, which bring highly-nonlinear coupled effects to the closed-loop system, a novel nearest-neighbor previous instant compensation technique, combined with the lifting approach and the future states prediction, is introduced in this paper to asymptotically fully compensate the effects of uncertainties. With such elaborately constructed adaptive estimation mechanism, the developed discrete-time backstepping adaptive controller can guarantee the closed-loop stability as well as asymptotic output tracking, which have been rigorously established and testified by extensive simulations.

源语言英语
主期刊名2012 American Control Conference, ACC 2012
1913-1918
页数6
出版状态已出版 - 2012
活动2012 American Control Conference, ACC 2012 - Montreal, QC, 加拿大
期限: 27 6月 201229 6月 2012

出版系列

姓名Proceedings of the American Control Conference
ISSN(印刷版)0743-1619

会议

会议2012 American Control Conference, ACC 2012
国家/地区加拿大
Montreal, QC
时期27/06/1229/06/12

指纹

探究 'Adaptive control with nearest-neighbor previous instant compensation for discrete-time nonlinear strict-feedback systems' 的科研主题。它们共同构成独一无二的指纹。

引用此