交流接触器时变接触可靠度研究
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摘要
对交流电磁接触器的测试信息(回跳时间、接触压降和断开触点间压降)进行了时序分析和统计分析,指出测量值序列的不确定性问题,基于分期加权统计分析法提出时序权重和概率权重的融合模型。确定了接触参数的时变可靠隶属曲线,对失效及未失效触点的接触参数测量值序列进行调理、综合。最后,得出依据时变接触可靠度对接触器进行剩余寿命预测的方法。
The historical test and measure information(including bounce time,contact voltage and voltage between contact pair) of AC electromagnetic contactor was analyzed through time series and statistics.The nondeterminacy of measured value series was brought out based on weighting statistical analysis,it put forward a fusion model of series weight and probability weight,and the time-varying reliability curve of three parameters.It took adjustment and comprehensive treatment on the measured value series of both disabled contact pair and normal contact pair.Finally,the prediction method of residual life in the light of time-variant contact reliability was obtained.
The historical test and measure information(including bounce time,contact voltage and voltage between contact pair) of AC electromagnetic contactor was analyzed through time series and statistics.The nondeterminacy of measured value series was brought out based on weighting statistical analysis,it put forward a fusion model of series weight and probability weight,and the time-varying reliability curve of three parameters.It took adjustment and comprehensive treatment on the measured value series of both disabled contact pair and normal contact pair.Finally,the prediction method of residual life in the light of time-variant contact reliability was obtained.
引文
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[3]WANG W,ZHANG W.An asset residual life predic-tion model based on expert judgments[J].EuropeanJournal of Operational Research,2008,188(2):496-505.
[4]MENG F B,LU J G,ZHU Y Q,et al.Failure char-acteristics of Ag-SnO2 contact material in AC level[J].Rare Metals,2008,27(1):18-21.
[5]GINIOTIS V,GRATTAN K T V,RYBOKAS M,etal.Uncertainty and indeterminacy of measurementdata[J].Measurement,2004,36(2):195-202.
[6]BAHAR H B,HORROCKS D H.Dynamic weight es-timation using an artificial neural network[J].Artifi-cial Intelligence in Engineering,1998,12(1):135-139.
[7]彭文季,郭鹏程,罗兴錡.基于最小二乘支持向量机和信息融合技术的水电机组振动故障诊断研究[J].水力发电学报,2007,26(6):137-142.
[8]张根柱.3TB40交流接触器辅助触头可靠性试验研究[J].继电器,2003(3):50-52.
[9]程载斌,刘玉标,梁乃刚.地震作用下大型升船机结构的时变动力可靠度[J].工程力学,2009,24(4):221-227.
[10]ANDRIEU-RENAUD C,SUDRET B,LEMAIRE M.The PHI2 method:A way to compute time-variant re-liability[J].Reliability Engineering&System Safe-ty,2004,84(1):75-86.
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