To meet the stringent micro-vibration experiment requirements for remote sensing satellites on the ground,a comprehensive experimental platform has been developed.This platform integrates micro-vi-bration simulation with both active and passive vibration isolation capabilities.It evaluates the active and passive vibration isolation effectiveness and the micro-vibration simulation's impact separately.Passive iso-lation is achieved through air-floating support,while active isolation employs an active damping technique.A control strategy based on the linear system's frequency response function is utilized for micro-vibration simulation.The results indicate that the platform's first six modal frequencies are below 10 Hz.The pas-sive isolation system effectively reduces ground micro-vibrations within the 10-200 Hz range,and the ac-tive isolation system attenuates the vibration isolation system's resonance peak by 14 dB.The micro-vibra-tion simulation can accurately produce single and multi-frequency disturbances that closely mimic actual satellite conditions.During specific spectrum simulation experiments,the maximum amplitude error was 5.90%,which falls within the acceptable error margin.This versatile integrated experimental platform ful-fills all the experimental requirements.
关键词
微振动实验/有限元分析/主动隔振/被动隔振/微振动模拟
Key words
micro-vibration experiment/finite element analysis/active vibration isolation/passive vibra-tion isolation/micro-vibration simulation
维普
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