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介绍了卫星微振动地面测试和信号估计方法.根据量子科学实验卫星特点,对动量轮运行状态下光学载荷的微振动线位移及角位移进行估计.通过地面微振动测试系统,测量了动量轮运行下光学载荷的微振动加速度;应用小波积分方法,精确估计了卫星结构敏感点的振动线位移和振动角位移.通过工程实测证明了微振动测试与估计方法的有效性.研究结果对于高精度科学实验卫星微振动地面试验具有一定工程应用意义.
This paper introduces the method of satellite micro-vibration ground test and signal estimation.According to the characteristics of quantum science experimental satellite, the micro-vibration line displacement and angular displacement of optical load under the operation of momentum wheel are estimated.Through the ground micro-vibration test system, The vibrational displacement and the vibration angle displacement of the satellite structure sensitive point are accurately estimated by using the wavelet integral method.The validity of the micro-vibration test and estimation method is verified by engineering practice.The results of the study are very useful for the high-precision science Experimental satellite micro-vibration ground test has some engineering significance.