Variable Reaching Law Nonsingular Fast Terminal Sliding Mode Observer-Based Deadbeat Fault-tolerant Compensation Control for IPMSM's Demagnetization Fault.

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Bibliographic Details
Title:	Variable Reaching Law Nonsingular Fast Terminal Sliding Mode Observer-Based Deadbeat Fault-tolerant Compensation Control for IPMSM's Demagnetization Fault.
Authors:	Wen, Dingdou¹, Xia, Dengliang¹, Wei, Xiaorui², Wu, Wenjie¹, Xiao, Yuanyuan³ 494492524@qq.com
Source:	Progress in Electromagnetics Research C. 2026, Vol. 169, p205-215. 11p.
Subjects:	Demagnetization, Fault-tolerant control systems, Permanent magnet motors, Robust control
Abstract:	To address the issues of electromagnetic torque attenuation and insufficient robustness caused by demagnetization faults in interior permanent magnet synchronous motors (IPMSMs), a deadbeat fault-tolerant compensation control (DBFTCC) strategy based on a variable reaching law nonsingular fast terminal sliding mode observer (VRL-NFTSMO) is proposed. First, the VRL-NFTSMO is designed to achieve a precise observation of the flux linkage and next current value. Second, DBFTCC is constructed based on flux linkage and current information, which can effectively suppress electromagnetic torque attenuation caused by demagnetization faults, improve system robustness, and achieve reliable fault-tolerant control under demagnetization faults. Finally, the experimental results indicate that the proposed compensation strategy has stronger fault tolerance and robustness than traditional methods when the IPMSMs suffer from both demagnetization fault and large load variation. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	To address the issues of electromagnetic torque attenuation and insufficient robustness caused by demagnetization faults in interior permanent magnet synchronous motors (IPMSMs), a deadbeat fault-tolerant compensation control (DBFTCC) strategy based on a variable reaching law nonsingular fast terminal sliding mode observer (VRL-NFTSMO) is proposed. First, the VRL-NFTSMO is designed to achieve a precise observation of the flux linkage and next current value. Second, DBFTCC is constructed based on flux linkage and current information, which can effectively suppress electromagnetic torque attenuation caused by demagnetization faults, improve system robustness, and achieve reliable fault-tolerant control under demagnetization faults. Finally, the experimental results indicate that the proposed compensation strategy has stronger fault tolerance and robustness than traditional methods when the IPMSMs suffer from both demagnetization fault and large load variation. [ABSTRACT FROM AUTHOR]
ISSN:	19378718
DOI:	10.2528/PIERC26030902