噪声与振动控制Issue(3)：34-41,8.DOI:10.3969/j.issn.1006-1335.2014.03.008
不平衡飞轮的扰动特性
Study on Disturbance Characteristics of Imbalance Flywheels
摘要
Abstract
High-precision spacecraft has very serious demands on pointing accuracy. The flywheel is an integral part of the execution units for satellite attitude control. In the research and development process, small eccentricity or dynamic imbalance is unavoidable. So, in the attitude maneuver and stability control process, rotation of the flywheel can cause interference forces. In this paper, taking the imbalance mass as a part of the spacecraft, the spacecraft attitude dynamic equations are conducted and the simulation is carried out. The simulation results are analyzed and illustrated. It is found that when the flywheel is rotating at high speed, the attitude of the spacecraft is essentially independent of the dynamic unbalance mass and its installation location, while it is linearly related to the static unbalance mass. When a single flywheel rotates, the long-period pointing accuracy depends on the inherent characteristics of the flywheel only, instead of its rotating speed. While multi-flywheels rotate, the attitude will oscillate or diverge, depending on the initial phase. Furthermore, effect of the multi-flywheels rotating does not mean the superposition of the influences of single-flywheel’s rotating.关键词
振动与波/动不平衡/静不平衡/转动/扰动/姿态Key words
vibration and wave/dynamic imbalance mass/static imbalance mass/rotation/disturbance/attitude分类
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李太平,姚煜中,李霖圣,程世祥..不平衡飞轮的扰动特性[J].噪声与振动控制,2014,(3):34-41,8.
