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13 October 2008 Dynamic evaluation on friction torque of bearing for space use
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As the important index of evaluating the operational sensitivity of the rolling bearings, the friction torque of bearing for space using influences the signal transferring accuracy and the system stability of the spacecraft directly. It is difficult to do the large number of tests based on the particularity of the bearing for space using. Therefore, considering the limitation of the statistical principle, a dynamic evaluation model called the grey bootstrap modeling (GBM) is proposed in the paper to dynamically evaluate the friction torque of bearing for space using. The test shows under the condition of the minimum of the mean uncertainty, choosing the suitable rolling factor, the number of resampling and the confidence level, the GBM can describe the fluctuation interval of the friction torque on-line much better, and also can separate the systematic error. So, the GBM has the better performance of dynamic forecasting and its liability is quite high.
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Shichao Chen, Xintao Xia, Zhongyu Wang, and Changxing Wang "Dynamic evaluation on friction torque of bearing for space use", Proc. SPIE 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration, 712926 (13 October 2008);


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