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Volume 40 Issue 7
Jul.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(7): 899-904.
Li Xiaogang, Wang Yahui. Identification method of failure mechanism consistency by non-equidistance grey theory model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(7): 899-904. doi: 10.13700/j.bh.1001-5965.2013.0483(in Chinese)
Citation: Li Xiaogang, Wang Yahui. Identification method of failure mechanism consistency by non-equidistance grey theory model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(7): 899-904. doi: 10.13700/j.bh.1001-5965.2013.0483(in Chinese)
shu

Identification method of failure mechanism consistency by non-equidistance grey theory model

doi: 10.13700/j.bh.1001-5965.2013.0483

  • School of Reliability and Systems Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 17 Sep 2013
  • Publish Date: 20 Jul 2014
    Abstract
  • To deal with the problems of accelerated failure mechanism consistency identification in the methods based on data processing and experimental observation need the accelerated testing data and the method based on grey theory needs that the data of pre-test is equidistant as well as the prediction accuracy is not high, a new method of failure mechanism consistency identification based on non-equidistance grey theory model was proposed. The method combined the non-equidistance GM (1, 1) with equal dimension model by the non-equidistance pre-test data, got the residual, and found the change point of trend of data from pre-test. According to the contrast test, the method of fitting precision and prediction precision was higher, and the application scope of GM (1, 1) model in the failure mechanism consistency identification was enlarged. Finally, the effectiveness of the method was validated by a practical example on photoelectric encoder and accelerometer.

     

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