• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Reliability Engineering & System Safety >On preventive maintenance policy of a critical reliability level for system subject to degradation
【24h】

On preventive maintenance policy of a critical reliability level for system subject to degradation

机译：关于退化系统的关键可靠性级别的预防性维护策略

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Conventional preventive maintenance (PM) policies generally hold same time interval for PM actions and are often applied with known failure modes. The same time interval will give unavoidably decreasing reliabilities at the PM actions for degradation system with imperfect PM effect and the known failure modes may be inaccurate in practice. Therefore, field managers would prefer policy with an acceptable reliability level to keep system often at a good state. A PM policy with the critical reliability level is presented to address the preference of field managers. Through assuming that system after a PM action starts a new failure process, a parameter so-called degradation ratio is introduced to represent the imperfect effect. The policy holds a law that there is same number of failures in the time intervals of various PM cycles, and same degradation ratio for the system reliability or benefit parameters such as the optimal time intervals and the hazard rates between the neighboring PM cycles. This law is valid to any of the failure modes that could be appropriately referred as a 'general isodegrading model', and the degradation ratio as a 'general isodegrading ratio'. In addition, life cycle availability and cost functions are derived for system with the policy. An analysis of the field data of a loading and unloading machine indicates that the reliability, availability and cost in life cycle might be well modeled by the present theory and approach.
机译：常规的预防性维护（PM）策略通常为PM动作保留相同的时间间隔，并且通常应用于已知的故障模式。相同的时间间隔将不可避免地降低具有不完美PM效果的降级系统的PM动作的可靠性，并且实际中的已知故障模式可能不准确。因此，现场经理更喜欢具有可接受的可靠性级别的策略，以使系统经常保持良好状态。提出了具有关键可靠性级别的PM策略，以解决现场经理的偏爱。通过假定PM动作之后的系统开始新的故障过程，引入了所谓的退化率参数来表示不完美的效果。该策略具有以下定律：在各个PM周期的时间间隔中故障数量相同，并且对于系统可靠性或收益参数（例如最佳时间间隔和相邻PM周期之间的危险率）的降级率相同。该定律适用于任何可以适当地称为“一般同等降解模型”的失效模式，而退化率可以称为“一般同等降解比例”。此外，系统会根据策略导出生命周期可用性和成本函数。对装卸机现场数据的分析表明，使用本理论和方法可以很好地建模生命周期中的可靠性，可用性和成本。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号