吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (05): 1208-1211.

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Comprehensive evaluation on reliability of numerically |controlled machine tool based on entropy weight method

SHEN Gui-xiang| ZHANG Ying-zhi|XUE Yu-xia|CHEN Bing-kun|He Yu   

  1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China
  • Received:2007-11-01 Online:2009-09-01 Published:2009-09-01

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Abstract:

    An entropy weight method with objective weighting was used to evaluate the reliability of the numericallycontrolled machine tool. The method avoids the shortcoming of the weighted comprehensive evaluation method which lies in the subjectivity in weight determination. Based on the built comprehensive evaluation indicator system(mean time to first failure MTTFF, mean time between failures MTBF, equivalent failure rate D) and the reliablility data from the 2 types of machining center, the weights of indicators were calculated and the comprehensive evaluation on the reliability of the machining centers was performed.

Key words: machine tool, entropy weight method, reliability evaluation, mean time to first failure(MTTFF), mean time between failures(MTBF), equivalent failure rate

CLC Number: 

  • TG659

申桂香（1957-）,女,教授,博士生导师.研究方向:面向生命周期的数控装备可信性技术.Email:shengx@jlu.edu.cn
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