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

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (3) : 204-208.

WANG Qiu-xiao, WANG Fei, KONG Bo

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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.

Key words

dynamic balancing machine / vibration mechanism / satellite-borne rotating playload / separation of translational motion and rotational motion

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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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