Research on Condition Based Maintenance Decision of CNC
-
摘要: 从机床维修角度入手,提出基于状态监测的机床视情维修方式。研究了包含早期故障期和偶然故障期的两重威布尔比例风险模型的建立方法与过程。以机床可用度最大为目标函数对机床维修时机决策进行了论述。结合转台实例对维修时机决策进行分析,应用结果验证了分析方法与所建模型的正确性,表明了该维修方式能够有效避免机床过维修和欠维修同时存在的现象。Abstract: Condition Based Maintenance on machine tool was proposed.By analyzing the failure data,the building approach and procedure of the piecewise twofold Weibull proportional hazards models containing the early failure period and random failure period was researched.The maintenance threshold decision model of machine tool was studied with the objective-function of maximize usability.The application of rotary example illuminates the method and the models are correct and the Condition Based Maintenance is in accordance with the status of the machine tools,and it can avoid the phenomena of over-maintenance or lack-maintenance.
-
Key words:
- machine tool /
- maintenance /
- weibull distribution /
- decisio
-
[1] Munoz A,Martorell S,Serradell V.Genetic algorithms in optimi-zing surveillance and maintenance of components[J].ReliabilityEngineering and System Safety,1997,57:107~120 [2] Xu K,et al.Fuzzy assessment of FMEA for engine systems[J].Reliability Engineering and System Safety,2002,75:17~29 [3] 袁志坚,孙才新,李爱华等.模糊多属性决策方法评价变压器状态维修策略[J].高电压技术,2004,(8):33~35 [4] Lin D,et al.Using principal components in a proportional haz-ards model with applications in condition-based maintenance[J].Journal of the Operational Research Society,2006,57 [5] Schoenfeld D A,Borenstein M.Calculating the power or samplesize for the logistic and proportional hazards models[J].Journalof Statistical Computation and Simulation,2005,75(10) [6] 赵继俊等.混合威布尔分布的参数优化估计[J].机械科学与技术,2001,20(1):14~16 [7] 申桂香等.CNC机床故障分析及其可靠性[J].中国机械工程,1996,7(6):67~69 [8] Wang Y Q,Jia Y Z,Jiang W W.Early failure analysis of machi-ning centers:a case study[J].Reliability Engineering andSystem Safety,2001,72:91~97 [9] 蒋仁言,左明健.可靠性模型与应用[M].北京:机械工业出版社,1999 [10] 高萍.基于可靠性分析的复杂设备预防性维修决策研究[D].北京:清华大学,2006 [11] Vlok P J,Coetzee J L,Banjetic D.Optimal component replace-ment decisions using vibration monitoring and the proportional-hazards model[J].Journal of Operational Research Society,2002,53:193~202
点击查看大图
计量
- 文章访问数: 472
- HTML全文浏览量: 26
- PDF下载量: 7
- 被引次数: 0