A simple and effective mechanical parts maintenance approach with lower cost is urgently needed by the cost-sensitive manufactures for traditional excavators (HE). This paper proposes maintenance strategy for hydraulic cylinders (HC) of HE with energy regeneration and recovery system (ERRS). Reliability analysis and FMEA of historical failure data are applied to make maintenance strategy. In this study, the failure data required for reliability analysis are collected from the manufacturers and users over two and a half years, Excel is used as statistical tool, Minitab is used for parameter estimation, and Kolmogorov–Smirnov test is used to reject or accept the hypothesis of the distribution model. The reliability parameters R(t), R_set, and R^∗(t) are determined and parameter β^∗ is the reference value for making countermeasures and maintenance policies properly for the failure modes of the new HC of HE with ERRS. The purpose of this paper is to make proper maintenance policies and to maintain a high availability level and fulfill the user’s needs for HC, which also paves the way for further reliability study about ERRS.

中文翻译：

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基于可靠性分析和FMEA的维修策略：以传统ERRS挖掘机液压缸为例

成本敏感的传统挖掘机（HE）制造商迫切需要一种成本低廉的简单有效的机械零件维护方法。本文提出了带有能量再生和回收系统（ERRS）的HE液压缸（HC）的维护策略。应用历史故障数据的可靠性分析和FMEA制定维护策略。在这项研究中，可靠性分析所需的故障数据是在两年半的时间里从制造商和用户那里收集的，Excel被用作统计工具，Minitab被用于参数估计，而Kolmogorov–Smirnov测试被拒绝或接受分布模型的假设。可靠性参数R（t），R _set和R ^∗确定（t），参数β ^∗是为带有ERRS的新型HC的故障模式正确制定对策和维护策略的参考值。本文的目的是制定适当的维护策略并维持高可用性级别并满足用户对HC的需求，这也为进一步研究ERRS的可靠性铺平了道路。