FY-4卫星微振动抑制技术研究  

Study on Micro-Vibration Suppression Technology of FY-4 Satellite

作　　者：董瑶海[1] 周徐斌[2] 申军烽[2] 刘兴天[2] 虞自飞 

机构地区：[1]上海航天技术研究院,上海201109 [2]上海卫星工程研究所,上海201109

出　　处：《上海航天》2017年第4期20-27,共8页Aerospace Shanghai

基　　金：国家自然科学基金资助(51505294);上海市科委项目资助(14XD1423000)

摘　　要：根据装载干涉式大气垂直探测仪对微振动抑制的要求,对风云四号(FY-4)卫星的微振动抑制技术进行了研究。通过统计星上振源,规划整星级频谱,研究微振动传播机理,设计了振源隔离和载荷隔振的双级隔振系统。给出了动量轮的隔振设计,将动量轮的安装支架由刚性变为基于六角架(Hexapod)构型的非线性变刚度柔性支架,隔离动量轮传递至卫星平台的振动干扰,从源头控制振动。分析了发射段幅频特性和在轨段隔振性能,结果表明试验结果与理论分析一致。在此基础上,采用隔振组件和解锁组件并联使用方式,实现干涉式大气垂直探测仪的二次隔振设计,以进一步抑制卫星平台传递至探测仪的微振动干扰。地面微振动试验和在轨微振动实测结果表明:隔振系统能使卫星平台传递至载荷安装面的微振动量级控制在0.1×10-3g以下,满足指标要求。FY-4卫星微振动抑制技术可为其他卫星的微振动抑制提供参考。According to the requirement of micro-vibration source isolation for interferometer detector,the micro-vibration suppression was studied for FY-4 meteorological satellite in this paper.The two level microvibration isolation system which composed of vibration source and sensitive payload isolation devices was designed by onboard vibration source statistics,the spectrum planning on the whole satellite level and the mechanism research of micro-vibration propagation.The vibration isolation was designed for reaction wheel.The vibration isolation device was designed based on the Hexapod configuration,the vibration from source hence be controlled as the vibration transferring into the satellite platform was weakened.The characteristics of amplitude-frequency in active phase and the performances of vibration isolation in orbit were analyzed.The results showed that the experiment results were well agreed with the simulation results.For the sensitive payload vibration isolation,the interferometer detector was isolated by isolators installed between the satellite top plate and the payload.The micro-vibration isolation experiments conducted both on ground and in orbit show that the two level vibration isolation system can effectively reduce the vibration transmitted into the payload and the vibration level is controlled at 0.1×10-3 gand below which satisfies the application requirement of FY-4 satellite.The micro-vibration isolation technology of FY-4 satellite has significance value and can also be used in other similar satellites.

关 键 词：风云四号卫星 微振动 隔振系统 非线性振动 动量轮 敏感载荷 传递率 Hexapod结构 

分 类 号：P414.4[天文地球—大气科学及气象学] V414.5[航空宇航科学与技术—航空宇航推进理论与工程]