Open AccessAdaptive tracking control of uncertain switched non‐linear systems with application to aircraft wing rock
Author(s) -
Huang Ran,
Zhang Jinhui,
Zhang Xu
Publication year - 2016
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2015.1335
Subject(s) - control theory (sociology) , unobservable , controller (irrigation) , tracking error , bounded function , residual , tracking (education) , transient (computer programming) , computer science , aerodynamics , uniform boundedness , trajectory , adaptive control , hysteresis , mathematics , control (management) , engineering , artificial intelligence , physics , algorithm , psychology , mathematical analysis , pedagogy , quantum mechanics , astronomy , agronomy , econometrics , biology , operating system , aerospace engineering
This study proposes an adaptive control scheme for global tracking of a class of switched non‐linear systems involving unknown saturated‐like Prandtl–Ishlinskii (PI) hysteresis. The switching information is assumed to be unobservable. A bound estimation approach is introduced to circumvent the obstacle caused by unknown switching and PI hysteresis. It is shown that under arbitrary switching, the proposed controller guarantees all signals of the overall closed‐loop system are globally uniformly bounded, and the tracking error can converge to an arbitrarily small residual set. The proposed control scheme is tested on a typical wing rock system in the face of persistent aerodynamic parameter changes. Simulation results demonstrate suppression of the wing rock and exhibit better transient performance in comparison with some existing method.