Remaining useful life prediction of permanent magnet stepper motor based on electronic valve operating conditions

Home > Archive>Volume 47, Issue 4, 2024 >104-112

Remaining useful life prediction of permanent magnet stepper motor based on electronic valve operating conditions
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                        Yang ChaoqunYang Chaoqun
1.State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Beichen District， Tianjin 300401, China； 2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province (Hebei University of Technology), Beichen District，Tianjin 300401, China
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Duan Shuyong1Duan Shuyong
State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Beichen District， Tianjin 300401, China
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Yang TianhaoYang Tianhao
1.State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Beichen District， Tianjin 300401, China； 2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province (Hebei University of Technology), Beichen District，Tianjin 300401, China
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Li ShanhuLi Shanhu
1.State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Beichen District， Tianjin 300401, China； 2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province (Hebei University of Technology), Beichen District，Tianjin 300401, China
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Affiliation:1.State Key Laboratory of Reliability and Intelligence of Electrical Equipment (Hebei University of Technology), Beichen District， Tianjin 300401, China; 2.Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province (Hebei University of Technology), Beichen District，Tianjin 300401, China
Clc Number:TM383
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Abstract:

As the core device of the electronic valve, the operating state of the micro permanent magnet stepping motor has a direct impact on whether the electronic valve can perform operations normally. In order to accurately grasp the remaining useful life of the motor, a prediction method considering individual differences in the Wiener process is proposed. Firstly, by analyzing the failure process of motor performance degradation, the effective value of phase current is selected as the characteristic quantity of performance degradation. Secondly, due to the simultaneous participation of multiple motors of the same model in the experiment, a motor performance degradation model considering the individual differences in the Wiener process is established, and parameter estimation is carried out based on the EM algorithm.Finally, the number of starting and stopping times is designed as the reference of the motor′s remaining useful life in the experiment and compared with the prediction results based on the traditional Wiener process. The experimental results show that the average prediction error of the proposed method decreases by 3.74%, which has a higher prediction accuracy.

Key words:micro permanent magnet stepper motor;Wiener process;EM algorithm;remaining useful life prediction

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Online: May 15,2024
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