含反馈环的电动飞机驱动系统可靠性分析方法

doi:10.3969/j.issn.1000-1093.2022.02.023

摘要/Abstract

摘要： 电动飞机驱动系统由于存在反馈环无法用成功流（GO）法进行可靠性分析，直接断开反馈又降低了分析结果的精度，为此提出一种通过建立布尔方程解决含有反馈环的系统可靠性分析方法。设置反馈信号为系统输入，根据信号流向和GO法操作符运算规则建立含反馈信号的布尔方程，并与其他反馈信号的方程联立求得各反馈信号的表达式，进而获得系统可靠性分析结果。以某电动飞机永磁同步电机驱动系统为例，基于GO法建立系统可靠性模型，并对系统断开反馈和含有反馈两种情况进行了分析对比。结果表明，该反馈环处理方法可行，能有效提高分析结果的精度，同时可延伸GO法的应用范围。

关键词: 电动飞机驱动系统, 可靠性分析, 永磁同步电机驱动系统, 成功流法, 反馈环

Abstract: Due to the existence of feedback loop, the reliability of electric aircraft drive system cannot be analyzed by using GO methodology directly. If the feedback loop is disconnected directly, the accuracy of the analysis results will be reduced. To solve this problem, a reliability analysis method of system with feedback loop is proposed by establishing Boolean equation. The feedback signal is set as a system input, and Boolean equation with the feedback signal can be established according to the signal flow direction and the operational rules of GO operators.The expressions of each feedback signal are derived by using Boolean equation and the equations of other feedback signals, and then the analysis results of system reliability is obtained. For the PMSM drive system of an electric aircraft, the system reliability model is established based on GO methodology. The two cases of system without and with feedback loops are analyzed and compared. The results show that the proposed method for feedback loops is feasible, which can improve the accuracy of analysis results and extend the application range of GO methodology.

Key words: electricaircraftdrivesystem, reliabilityanalysis, PMSMdrivesystem, GOmethodology, feedbackloop

中图分类号:

TB114.33

江秀红，李佳欣，刘彦娟，王玉颖. 含反馈环的电动飞机驱动系统可靠性分析方法[J]. 兵工学报, 2022, 43(2): 451-457.

JIANG Xiuhong， LI Jiaxin， LIU Yanjuan， WANG Yuying. Reliability Analysis of Electric Aircraft Drive System with Feedback Loop[J]. Acta Armamentarii, 2022, 43(2): 451-457.

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