一种改进的卫星旋转载荷动平衡的振动结构

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (3) : 204-208.

论文

一种改进的卫星旋转载荷动平衡的振动结构

王秋晓，汪飞，孔波

作者信息 +

A Improved Vibrational Mechanism for Dynamic Balance of Satellite-borne Rotating Playload

WANG Qiu-xiao, WANG Fei, KONG Bo

Author information +

文章历史 +

摘要

卫星旋转天线的动不平衡对卫星在轨姿态稳定性有重大影响，必须加以控制。由于其工作转速低、质偏和高度较大、离心力产生的平动量远小于倾覆力矩产生的摆动量，平衡机测量精度低。提出了一种振动结构，能够将弱的离心力信号从较强的力矩信号中分离开来，并且采用固定摆动中心的方式，确定了振动中心位置。理论和实验表明，平动振动与摆动振动有效实现了机械分离，避免了振动中心不稳定引起的误差等问题，为最终卫星旋转载荷动平衡机的研制提供了理论基础。

Abstract

The dynamic unbalance of a satellite-borne antenna has a great influence on the attitude of the on-orbit satellite and must be eliminated. However, the current balancing machines’ measurement accuracy is poor for that the working revs of the rotating playload is low, the centroidal deviation is large and high, and the translational mo-tion produced by centrifugal force is much less than the rotational motion produced by overturning moment. A vibra-tional mechanism is introduced which is able to separate the weak centrifugal force signal from the strong moment signal, and the way of fixing the vibration center is adopted in order to make sure that the position of the vibration center could be determined. Based on theoretical and experimental results, the translational motion and the rotational motion are separated effectively, and errors caused by unstable vibration center are avoided, which provides the fundamental basis for the development of the new dynamic balancing machine for the satellite’s rotating playload.

导出引用

王秋晓，汪飞，孔波. 一种改进的卫星旋转载荷动平衡的振动结构[J]. 振动与冲击, 2016, 35(3): 204-208

WANG Qiu-xiao, WANG Fei, KONG Bo. A Improved Vibrational Mechanism for Dynamic Balance of Satellite-borne Rotating Playload[J]. Journal of Vibration and Shock, 2016, 35(3): 204-208

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