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卫星微振动是影响高精度卫星指向精度和成像质量等关键性能的重要因素;文章针对某卫星微振动力学环境展开分析,研究国内外卫星微振动虚拟仿真方法,借鉴IME颤振分析及刚柔耦合动力学建模分析方法,建立一种卫星刚柔耦合多体动力学微振动仿真分析模型,通过微振动地面试验验证了该仿真方法与卫星仿真模型的正确性;借助该模型,预测卫星在轨微振动环境及卫星微振动的影响,得到卫星载荷安装界面微振动量级在0.002g~0.006g之间,为卫星上敏感载荷的研制及其减振方案的设计提供了参考。
Satellite micro-vibration is an important factor affecting the key performance of high-precision satellite pointing accuracy and imaging quality. In this paper, an analysis of the micro-vibration dynamics environment of a satellite is carried out to study the domestic and foreign satellite micro-vibration virtual simulation method, learn IME chatter analysis and rigid-flexible coupling Dynamic modeling and analysis method to establish a satellite rigid-flexible coupled multi-body dynamics micro-vibration simulation analysis model, micro-vibration ground test verified the simulation method and the satellite simulation model is correct; with the model, the satellite in orbit Micro-vibration environment and satellite micro-vibration, the micro-vibration level of the satellite load-mounting interface is obtained between 0.002g and 0.006g, which provides a reference for the development of the satellite-based sensitive load and the design of its damping scheme.