Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/145984
Title: Adaptive minimum-entropy hybrid compensation for compound faults of non-gaussian stochastic systems
Authors: Hu, Kaiyu
Chen, Fuyang
Cheng, Zian
Wen, Changyun
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Hu, K., Chen, F., Cheng, Z., & Wen, C. (2019). Adaptive minimum-entropy hybrid compensation for compound faults of non-gaussian stochastic systems. IEEE Access, 7, 120695-120707. doi:10.1109/access.2019.2936100
Journal: IEEE Access
Abstract: This study investigated minimum-entropy hybrid fault-tolerant control (FTC) theory for non-Gaussian stochastic systems with compound faults. After fuzzy linearization for the singular systems, the output probability density function (PDF) is generated by rational square root B-splines. To deal with the compound faults consisting of single sensor fault and intermittent multiple actuator faults, an active-passive hybrid adaptive FTC scheme is proposed: A passive compensation function can directly reconstruct the algorithm to mask the sensor fault; then, actuator fault estimation accurately tracks the multiple actuator faults. Hence, the hybrid FTC combines estimated information and passive compensation simultaneously implements active actuator fault repair and passive sensor fault shielding. A novel variable parameter algorithm that mimics animal predation behavior is designed and incorporated into learning rates, making the controller more sensitive to the incipient deviations in actuator faults. Finally, with the optimal indicators containing entropy and mean of non-Gaussian PDF, the minimum-entropy FTC is achieved. Lyapunov and indicator functions prove the stability, simulation verifies the effectiveness of the methods.
URI: https://hdl.handle.net/10356/145984
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2019.2936100
Rights: © 2019 IEEE. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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