›› 2012, Vol. 42 ›› Issue (04): 845-850.

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Reliability prediction for NC machine tool based on interval AHP

HAO Qing-bo1,2, YANG Zhao-jun1, CHEN Chuan-hai1, CHEN Fei1, LI Guo-fa1   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China;
    2. Department of Mechanics, Aviation University of Air Force, Changchun 130022, China
  • Received:2011-10-19 Online:2012-07-01 Published:2012-07-01

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Abstract: In view of the problem that it is difficult to determine the difference degree of reliability levels between the evaluation object and similar products when using similar comparison method to predict the reliability level of NC machine tools, a reliability prediction method introducing interval analytic hierarchy process (AHP) was presented. The relationship between the whole machine and its subsystems was analyzed, and a reliability prediction model was built for the whole machine. The reliability data of similar products were used in the course of reliability prediction for subsystems. The differences between the evaluation object and the similar products were comprehensively analyzed and an evaluation model for reliability correction factor was built. The reliability correction factor was obtained by using the interval AHP, realizing the mutual complement of certain and fuzzy informations. The application of this method was illustrated with an example, verifying the feasibility of the method.

Key words: machine tool, reliability prediction, similar comparison method, interval analytic hierarchy process (AHP)

CLC Number: 

  • TG659
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