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Systematic Fault Tolerant Control Based on Adaptive Thau Observer Estimation for Quadrotor Uavs Cover

Systematic Fault Tolerant Control Based on Adaptive Thau Observer Estimation for Quadrotor Uavs

Open Access
|Mar 2015

Abstract

A systematic fault tolerant control (FTC) scheme based on fault estimation for a quadrotor actuator, which integrates normal control, active and passive FTC and fault parking is proposed in this paper. Firstly, an adaptive Thau observer (ATO) is presented to estimate the quadrotor rotor fault magnitudes, and then faults with different magnitudes and time-varying natures are rated into corresponding fault severity levels based on the pre-defined fault-tolerant boundaries. Secondly, a systematic FTC strategy which can coordinate various FTC methods is designed to compensate for failures depending on the fault types and severity levels. Unlike former stand-alone passive FTC or active FTC, our proposed FTC scheme can compensate for faults in a way of condition-based maintenance (CBM), and especially consider the fatal failures that traditional FTC techniques cannot accommodate to avoid the crashing of UAVs. Finally, various simulations are carried out to show the performance and effectiveness of the proposed method.

DOI: https://doi.org/10.1515/amcs-2015-0012 | Journal eISSN: 2083-8492 | Journal ISSN: 1641-876X
Language: English
Page range: 159 - 174
Submitted on: Feb 13, 2014
Published on: Mar 25, 2015
Published by: University of Zielona Góra
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2015 Zhaohui Cen, Hassan Noura, Younes Al Younes, published by University of Zielona Góra
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.