Fault estimation and fault-tolerant control for discrete-time dynamic systems

Gao, Zhiwei (2015) Fault estimation and fault-tolerant control for discrete-time dynamic systems. IEEE Transactions on Industrial Electronics, 62 (6). pp. 3874-3884. ISSN 0278-0046

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Official URL: https://doi.org/10.1109/TIE.2015.2392720


In this paper, a novel discrete-time estimator is proposed, which is employed for simultaneous estimation of system states, and actuator/sensor faults in a discrete-time dynamic system. The existence of the discrete-time simultaneous estimator is proven mathematically. The systematic design procedure for the derivative and proportional observer gains is addressed, enabling the estimation error dynamics to be internally proper and stable, and robust against the effects from the process disturbances, measurement noise, and faults. Based on the estimated fault signals and system states, a discrete-time fault-tolerant design approach is addressed, by which the system may recover the system performance when actuator/sensor faults occur. Finally, the proposed integrated discrete-time fault estimation and fault-tolerant control technique is applied to the vehicle lateral dynamics, which demonstrates the effectiveness of the developed techniques.

Item Type: Article
Additional Information: (c)2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works.
Uncontrolled Keywords: discrete-time systems, fault tolerant control, robustness, vehicle lateral dynamics
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Dr Zhiwei Gao
Date Deposited: 15 May 2015 08:43
Last Modified: 31 Jul 2021 13:51
URI: http://nrl.northumbria.ac.uk/id/eprint/22480

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