Internal dynamic friction torque of the high-speed precision ball bearing affects performance of inertial gyros. A mathematic model of friction torque is established by taking into account the characteristics of lubrication oil and friction mechanism, and based on the quasi-dynamics of high-speed micro ball bearing and the principle of energy conservation. The friction torque is calculated and analyzed under different bearing working conditions including structure parameters and lubrication oil parameters in high-speed operations. Experimental results show the validity and feasibility of the mathematical model.
Guidance can be provide for the design, optimization, and applications of high-speed micro ball bearing.
LI Song-sheng1,2, LING Jie1,2, CHEN Jian1,2
. Characteristics of Dynamic Friction Torque for Inertial Gyro High-Speed Micro Ball Bearing[J]. Journal of Shanghai University, 2014
, 20(4)
: 429
-441
.
DOI: 10.3969/j.issn.1007-2861.2014.02.004
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