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| Performance Evolution Law and Degradation Model of Mechanical Gyroscope during Long-term Storage |
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| DOI：10.7643/issn.1672-9242.2023.03.002 |
| KeyWord:mechanical gyroscope temperature performance degradation prediction model |
| Author | Institution |
| ZHANG Shi-yan |
CSGC Key Laboratory of Ammunition Storage Environment Effects, Southwest Institute of Technology and Engineering, Chongqing , China |
| WU Hu-lin |
CSGC Key Laboratory of Ammunition Storage Environment Effects, Southwest Institute of Technology and Engineering, Chongqing , China |
| ZHAO Fang-chao |
CSGC Key Laboratory of Ammunition Storage Environment Effects, Southwest Institute of Technology and Engineering, Chongqing , China |
| TAN Tian-tian |
CSGC Key Laboratory of Ammunition Storage Environment Effects, Southwest Institute of Technology and Engineering, Chongqing , China |
| YANG Xiao-kui |
CSGC Key Laboratory of Ammunition Storage Environment Effects, Southwest Institute of Technology and Engineering, Chongqing , China |
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| Abstract: |
| The work aims to propose a method for establishing a performance degradation prediction model aiming at the problem that the performance degradation of mechanical gyroscope will affect the sideslip and range of guidance system after long-term storage, so as to master the performance degradation law of mechanical gyroscope during long-term storage. Firstly, according to the structure characteristic and storage environment of the mechanical gyroscope, the sensitive parameter was determined as temperature, the acceleration model was Arrhenius equation model, and the accelerated storage test was carried out to mechanical gyroscope. Secondly, the parameters of the mechanical gyroscope were periodically detected during the accelerated storage test and the performance degradation evolution law of the mechanical gyroscope under each performance parameter with the test time was analyzed, thus determining vertical drift as the degradation sensitive parameter. Finally, the performance degradation curves of vertical drift under various temperature stresses were fitted, and the performance degradation trajectory model was established. The model was verified by the performance data after storage for 6, 7, 8 and 10 years in the actual natural environment, with a prediction accuracy of 86.70%, 96.28%, 91.53% and 85.92%, respectively. The evaluation accuracy of the established performance degradation model is more than 85%, so the model can be applied to predict the performance degradation behavior of mechanical gyroscope for specified storage time. |
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