首页> 外文期刊>Quality and Reliability Engineering International >STUDY ON RELIABILITY MODELLING OF A HYDRAULIC EXCAVATOR SYSTEM
【24h】

STUDY ON RELIABILITY MODELLING OF A HYDRAULIC EXCAVATOR SYSTEM

机译:液压挖掘机系统可靠性建模研究

获取原文
获取原文并翻译 | 示例
       

摘要

The failure patterns of a well-known brand of a hydraulic excavator system used in different environments were modelled adequately with an NHPP (non-homogeneous Poisson process) having time-dependent log-linear peril rate functions. Using the fitted model, the reliability of the excavator system was estimated in different environments (cement plant, coal mine, iron ore mine, etc.). The system reliability was found to be very poor during the initial phase of operation and gradually improved with an increase in cumulative operating hours regardless of change in environment. Notwithstanding this general trend, the system reliability differed significantly in different environments for any given duration of operation and was particularly very poor in cement plants. With the help of the FMEA technique, high risk prone failure modes of the excavator system of the given model were identified and appropriate corrective measures were initiated. The failure patterns of the modified excavator system changed regardless of environment, so much so that an HPP (homogeneous Poisson process) model with constant peril rate could be fitted adequately to characterize the failure pattern of the system. The system reliability improved considerably in the initial phase of operation since start-up.
机译:使用具有随时间变化的对数线性危险率函数的NHPP(非均匀泊松过程)对在不同环境中使用的液压挖掘机系统的知名品牌的故障模式进行了充分建模。使用拟合模型,可以评估不同环境(水泥厂,煤矿,铁矿石矿山等)中挖掘机系统的可靠性。发现系统的可靠性在操作的初始阶段非常差,并且无论环境如何变化,随着累积操作时间的增加,系统的可靠性逐渐提高。尽管有这种总体趋势,但在任何给定的运行时间下,系统的可靠性在不同的环境中都存在显着差异,在水泥厂中尤为严重。借助FMEA技术,确定了给定模型的挖掘机系统的高风险易发故障模式,并采取了适当的纠正措施。改进的挖掘机系统的故障模式随环境的变化而变化,以至于可以充分拟合具有恒定危险率的HPP(均质泊松过程)模型来表征系统的故障模式。自启动以来,系统可靠性在操作的初始阶段得到了极大的改善。

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