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本文首先对ＭＦＥ１－５５ＹＣ液压阀用比例电磁铁进行故障模式与影响分析（ＦＭＥＡ），找到了影响其可靠性的重要零件。通过对重要零件分别进行可靠性试验和试验数据的统计分析，确定了比例电磁铁失效分布规律和固有可靠性指标，建立了其加速寿命试验方程，并且提供了比例电磁铁失效原因和改善其可靠性的方法。
In this paper, firstly, the failure mode and influence analysis (FMEA) of proportional solenoid for MFE1-55YC hydraulic valve is used to find the important parts that affect its reliability. Through the reliability test and the statistical analysis of the test data of the important parts respectively, the failure distribution law and inherent reliability index of the proportional electromagnet are determined, and the accelerated life test equation is established, and the cause of the failure of the proportional electromagnet and the improvement of its reliability are provided Sexual approach.