Satellite micro-vibration isolation simulation measurement system and method

Abstract

The invention discloses a satellite micro-vibration isolation simulation measurement system and method. The system comprises a moving trolley, a satellite, a to-be-measured vibration isolation system,equipment subjected to vibration isolation, a vibration measurement system, a quasi-zero stiffness suspension system and a vibration exciter, wherein the vibration exciter is installed on the movingtrolley and is connected with the satellite, the satellite and the equipment subjected to vibration isolation are suspended on the quasi-zero stiffness suspension system, and the to-be-measured vibration isolation system is arranged between the satellite and the equipment subjected to vibration isolation; the moving trolley simulates the weightlessness and on-orbit motion state of the satellite inspace; the to-be-measured vibration isolation system isolates the vibration of the satellite from being transmitted to the equipment subjected to vibration isolation; the quasi-zero stiffness suspension system simulates a zero gravity state; the vibration measurement system measures vibration signals of the vibration exciter and the equipment subjected to vibration isolation; vibration attenuation is obtained by comparing the vibration signals of the vibration exciter and the equipment subjected to vibration isolation, and the vibration transmissibility is obtained by calculating the ratio ofvibration signal amplitudes of the vibration exciter and the equipment subjected to vibration isolation. According to the invention, the performance of the micro-vibration isolation device on the satellite is simulated and measured on the ground, and the on-orbit operation state of satellite related equipment is evaluated.

Description

technical field [0001] The invention relates to the technical field of satellite micro-vibration measurement, in particular to a satellite micro-vibration isolation simulation measurement system and method. Background technique [0002] With the development of satellite technology, some equipment on the satellite is more and more sensitive to vibration, especially the optical load. As the resolution increases, the sensitivity of the optical load to micro-vibrations increases, and tiny vibrations may cause a significant drop in imaging performance. At the same time, there are various vibration sources in the satellite body, such as the rotation of the flywheel will generate vibration. Therefore, it is necessary to use specially designed vibration isolation devices to connect vibration-sensitive loads to the satellite body to reduce the impact of satellite vibration on sensitive loads. Considering the particularity of the environment in which the satellite is used, it is nec...

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