吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (6): 1636-1640.

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Failure dependency of CNC equipment based on copula theory

ZHANG Ying-zhi1, ZHENG Rui2, SHEN Gui-xiang1, WANG Zhi-qiong1, LI Huai-yang1,ZHENG Shan1   

  1. 1.College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China|2.The 716th Research Institute of China Shipbuilding Industry Corporation,Lianyungang 222006,China
  • Received:2010-09-03 Online:2011-11-01 Published:2011-11-01

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Abstract:

The reliability analysis was performed for the related failures using the Copula theory, selecting the Gumbel Copula function in the Archimedes function group as the linking function of the CNC machine tool to establish the relationship between the complete machine and its subsystems. The parameters of Copula function were estimated by the genetic algorithm. Comparing with the series model, the failure analysis based on the Copula theory is more accurate.

Key words: mechanical manufacture and automation, Copula concept, CNC equipment, failure dependency, reliability analysis

CLC Number: 

  • TG156
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