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Invariant manifold based output-feedback sliding mode control for systems with mismatched disturbances

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journal contribution
posted on 05.08.2021, 08:00 by Lu Zhang, Jun YangJun Yang, Shihua Li, Xinghuo Yu
This brief proposes an invariant manifold based output-feedback sliding mode control (SMC) strategy for systems with mismatched disturbances to achieve asymptotic tracking and disturbance rejection. Different from the existing output-feedback SMC methods, the invariant manifold is employed to transform the multiple mismatched disturbances into matched ones, which can provide full system dynamics for controller design to improve accuracy. An observer is developed to estimate unmeasurable states, then an output-feedback sliding mode controller is proposed. Moreover, the switching gain of the controller adaptively changes with the estimation error, which reduces chattering in SMC. Experiments on a converter-driven DC motor system verify the superiority of the proposed method.

Funding

National Natural Science Foundation of China under Grant 61973080 and Grant 61973081

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

IEEE Transactions on Circuits and Systems II: Express Briefs

Volume

68

Issue

3

Pages

933 - 937

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Version

AM (Accepted Manuscript)

Rights holder

© IEEE

Publisher statement

© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Acceptance date

14/07/2020

Publication date

2020-07-23

Copyright date

2020

ISSN

1549-7747

eISSN

1558-3791

Language

en

Depositor

Dr Jun Yang. Deposit date: 29 July 2021