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Discrete time output feedback sliding mode tracking control for systems with uncertainties
Author(s) -
Govindaswamy S.,
Floquet T.,
Spurgeon S.K.
Publication year - 2014
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.2978
Subject(s) - control theory (sociology) , sliding mode control , benchmark (surveying) , tracking (education) , discrete time and continuous time , mode (computer interface) , computer science , manifold (fluid mechanics) , set (abstract data type) , variable structure control , control (management) , work (physics) , control engineering , nonlinear system , engineering , mathematics , artificial intelligence , physics , mechanical engineering , psychology , pedagogy , statistics , geodesy , quantum mechanics , programming language , geography , operating system
SUMMARY This paper describes a method for designing discrete time static output feedback sliding mode tracking controllers for uncertain systems that are not necessarily minimum phase or of relative degree one. In this work, a procedure for realizing discrete time controllers via a particular set of extended outputs is presented for systems with uncertainties. The conditions for existence of a sliding manifold guaranteeing a stable sliding motion are given. A procedure to synthesize a control law that minimizes the effect of the disturbance on the sliding mode dynamics and the augmented outputs is given. The proposed control law is then applied to a benchmark aircraft problem taken from the literature that represents the lateral dynamics of a F‐14 aircraft under powered approach. Copyright © 2013 John Wiley & Sons, Ltd.
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