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Fault-Tolerant Control for Systems with Unmatched Actuator Faults and Disturbances

Zhang, Kangkang, Jiang, Bin, Yan, Xinggang, Mao, Zehui, Polycarpou, Marios M. (2020) Fault-Tolerant Control for Systems with Unmatched Actuator Faults and Disturbances. IEEE Transactions on Automatic Control, . ISSN 0018-9286. (doi:10.1109/TAC.2020.2997347) (KAR id:81685)

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A fault-tolerant control (FTC) scheme for a class of nonlinear systems with unmatched actuator redundancy and unmatched disturbances is proposed in this note. A methodology to construct unified smooth sliding mode control laws and update laws is proposed such that the equivalent injections of the first-order time derivatives of the unmatched actuator faults and unmatched disturbances can appear in the unmatched channels. The unmatched actuator faults and unmatched disturbances are completely canceled by these equivalent injections. Based on this methodology and using the backstepping design procedure, a set of smooth FTC sliding surfaces, FTC laws and update laws are then designed. With the help of the FTC law selecting mechanism, the output tracking errors of the closed-loop FTC system converge to zero asymptotically, and time-varying faults and disturbances are reconstructed. A simulation example is presented to illustrate the effectiveness of the proposed FTC method.

Item Type: Article
DOI/Identification number: 10.1109/TAC.2020.2997347
Uncontrolled keywords: Fault-tolerant control, unmatched actuator faults, unmatched disturbances.
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Xinggang Yan
Date Deposited: 12 Jun 2020 15:42 UTC
Last Modified: 16 Feb 2021 14:13 UTC
Resource URI: (The current URI for this page, for reference purposes)
Yan, Xinggang:
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