Sensor Condition Monitoring Incorporating Fault-tolerant Control

Huamin  Chen

doi:10.6180/jase.202402_27(2).0015

Sensor Condition Monitoring Incorporating Fault-tolerant Control

Computer Science and Information Engineering

Huamin ChenThis email address is being protected from spambots. You need JavaScript enabled to view it.

School of Information Engineering, Nanyang Institute of Technology, Nanyang 473000, China

Received: February 2, 2023
Accepted: June 11, 2023
Publication Date: July 15, 2023

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202402_27(2).0015

With the increase in the requirement for control system reliability, fault-tolerant control has become an active research field. For sensor faults in nonlinear systems, based on the idea of active fault-tolerant control, the active fault-tolerant control method with double fault-tolerant controller switching is designed to solve the problem of fault-tolerant control of the system in the case of sensor faults, considering the factor of sudden load changes. Based on fault diagnosis, the method uses diagnostic information and historical data to estimate and compensate the impact of faults on the state estimation of the extended Kalman filter and then uses the compensated state estimation to design a fault-tolerant controller with state feedback that satisfies the stability condition to ensure that the system can operate safely in the case of sensor multiplicative faults. To further improve the dynamic quality. Based on the fault information contained in the deviation between the state estimate of the extended Kalman filter and the one-step prediction estimate, a fault-tolerant control method with a multi-step prediction value instead of the filter valuation constituting the state feedback is proposed to exclude the influence of sensor faults and improve the dynamic performance of the fault-tolerant control. Also, the method can effectively solve the fault-tolerant control problem of additive sensor faults. The simulation results verify the effectiveness of the method.

Keywords: Sensor; Sensor failure; Active fault-tolerant control

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