Volume 33, Issue 6 pp. 3677-3698
RESEARCH ARTICLE

Data-driven fault-tolerant control for SISO nonlinear system with unknown sensor fault

Huijin Fan

Huijin Fan

National Key Laboratory of Science and Technology on Multispectral Information Processing, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, China

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Jingtian Han

Jingtian Han

National Key Laboratory of Science and Technology on Multispectral Information Processing, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, China

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Bo Wang

Corresponding Author

Bo Wang

National Key Laboratory of Science and Technology on Multispectral Information Processing, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, China

Correspondence Bo Wang, National Key Laboratory of Science and Technology on Multispectral Information Processing, Huazhong University of Science and Technology, Wuhan, 430074, China.

Email: [email protected]

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First published: 06 January 2023
Citations: 4

Summary

This paper studies the adaptive fault-tolerant control problem for a general nonlinear discrete-time SISO system with unknown system model and sensor fault. First, utilizing the input-output (I/O) data, an equivalent full-form dynamic linearization (FFDL) data model is to be constructed by introducing a pseudo-gradient vector. Then, to estimate the system's actual output from the sensor measurements corrupted by unknown faults, a nonlinear autoregressive with external input neural network (NARXNN) is employed and well-trained, by which the compensation of the fault signal can hence be derived indirectly. Based on the optimality criterion, an adaptive fault-tolerant control (FTC) strategy is therefore proposed, which promises the convergence of tracking error and the boundedness of system signals. The effectiveness of the proposed FTC algorithm is illustrated by simulation results.

CONFLICT OF INTEREST

The author declares that there is no conflict of interest.

DATA AVAILABILITY STATEMENT

Data sharing not applicable to this article as no datasets were generated or analyzed during the current study.

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