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H_/H∞ fault detection observer design for a polytopic LPV system using the relative degree Cover

H_/H∞ fault detection observer design for a polytopic LPV system using the relative degree

Open Access
|Mar 2018

Abstract

This paper proposes an H_/H fault detection observer method by using generalized output for a class of polytopic linear parameter-varying (LPV) systems. As the main contribution, with the aid of the relative degree of output, a new output vector is generated by gathering the original output and its time derivative, and it is feasible to consider H_ actuator fault sensitivity in the entire frequency for the new system. In order to improve actuator and sensor fault sensitivity as well as guarantee robustness against disturbances, simultaneously, an H_/H fault detection observer is designed for the new LPV polytopic system. Besides, the design conditions of the proposed observer are transformed into an optimization problem by solving a set of linear matrix inequalities (LMIs). Numerical simulations are provided to illustrate the effectiveness of the proposed method.

DOI: https://doi.org/10.2478/amcs-2018-0006 | Journal eISSN: 2083-8492 | Journal ISSN: 1641-876X
Language: English
Page range: 83 - 95
Submitted on: Jan 5, 2017
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Accepted on: Oct 23, 2017
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Published on: Mar 31, 2018
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 Meng Zhou, Mickael Rodrigues, Yi Shen, Didier Theilliol, published by University of Zielona Góra
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.