吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 210-214.

• paper • Previous Articles     Next Articles

Reliability model of CNC machine tools based on non-homogenous poisson process

XU Bin-bin, YANG Zhao-jun, CHEN Fei, HAO Qing-bo, ZHAO Hong-wei, LI Guo-fa   

  1. School of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
  • Received:2011-03-18 Online:2011-09-30 Published:2011-09-30

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Abstract:

This paper first implemented trend test on the multi-sample random censored field data of the CNC machine tools based on Total Time on Test method,on the basis that the failure process is bathtub curve,the model of non-homogeneous poisson process was built.Then the parameters of the intensity function was estimated using maximum likelihood estimation method,and the related indexes of the CNC machine tools under the non-homogeneous poisson process was obtained.This paper took field data of 6 machining centers as an example,building the reliability model of the non-homogeneous poisson process.

Key words: CNC machine tools, reliability, non-homogenous poisson process, bathtub curve

CLC Number: 

  • TG659


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