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| Storage Life Assessment for a Certain Type of Control Cabin Accelerometer in Natural Storage Environment |
| Received:March 05, 2014 Revised:March 15, 2014 |
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| DOI：10.7643/issn.1672-9242.2014.04.002 |
| KeyWord:control cabin natural storage storage life assessment英文关键词 |
| Author | Institution |
| NIU Yue-ting |
General Armament Ordnance Technology Institute, Shijiazhuang , China |
| MU Xi-hui |
General Armament Ordnance Technology Institute, Shijiazhuang , China |
| YANG Zhen-hai |
Beijing University of Technology, Beijing , China |
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| Abstract: |
| Objective To assess the storage life of a certain type of control cabin accelerometer in natural storage environment. Methods The historical statistics of the accelerometer's success or failure and incomplete failure data was investigated, assuming it was subject to exponential distribution, Weibull distribution, extreme value distribution and logarithmic normal distribution, in combination with the engineering data handling exceptions and " upside down" data, minimum x2 estimation was used to estimate the parameters of the distribution function, minimal x2 test was used to verify the rationality of the distribution function, and the goodness of fit of the " obeying distributed random variables under different degrees of freedom x2 " test was calculated. Results Reliability distribution function for accelerometer storage was obtained. Conclusion Through statistics of the fault data, the applicability and validity of the proposed mathematical model assessment methods were verified and the natural storage life of accelerometer was obtained with confidence and reliability of 0. 90 and 0. 95, respectively. |
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