航天器6维微振动力测试系统的设计与试验
发布时间：2018-08-17 18:20
【摘要】：为了测试不同状态下航天器各活动部件在低频及超低频区的6维微振动表现,设计了一种以压电传感器为核心的6维微振动力测试系统.通过标定及对软件的设计实现了传感器信号在空间上的实时采集、分析及处理等功能,并最终得到空间6维力.介绍了该测试系统的工作原理和动态标定方法,对该测试台进行了仿真及测试试验.结果表明,固有频率的仿真与试验结果前5阶的相对误差在5%以内,1阶频率大于400 Hz;力及力矩分辨率分别可达到0.1 N及0.01 N·m(SNR大于10);在频域上0~400 Hz范围内,该测试系统各通道的相对误差在7%以内.
[Abstract]:In order to measure the performance of 6 dimensional micro vibration of spacecraft moving components in low and ultra low frequency regions in different states, a 6 dimensional micro vibration force measurement system with piezoelectric sensor as the core is designed. Through calibration and software design, the real-time acquisition, analysis and processing of sensor signals in space are realized, and finally the spatial 6-axis force is obtained. The working principle and dynamic calibration method of the test system are introduced. The test bench is simulated and tested. The results show that the first five order relative errors of natural frequency are within 5% or less than 400Hz, the resolution of force and torque are 0. 1 N and 0. 01 N m (SNR > 10 respectively), and in the range of 0 ~ 400 Hz in frequency domain, the results show that the relative error of the first 5 order is less than 400 Hz, the resolution of force and torque is 0. 1 N and 0. 01 N m (SNR respectively. The relative error of each channel of the test system is less than 7%.
【作者单位】： 中国科学院长春光学精密机械与物理研究所;
【基金】：国家自然科学基金资助项目(11302222)
【分类号】：V416;TP212
[Abstract]:In order to measure the performance of 6 dimensional micro vibration of spacecraft moving components in low and ultra low frequency regions in different states, a 6 dimensional micro vibration force measurement system with piezoelectric sensor as the core is designed. Through calibration and software design, the real-time acquisition, analysis and processing of sensor signals in space are realized, and finally the spatial 6-axis force is obtained. The working principle and dynamic calibration method of the test system are introduced. The test bench is simulated and tested. The results show that the first five order relative errors of natural frequency are within 5% or less than 400Hz, the resolution of force and torque are 0. 1 N and 0. 01 N m (SNR > 10 respectively), and in the range of 0 ~ 400 Hz in frequency domain, the results show that the relative error of the first 5 order is less than 400 Hz, the resolution of force and torque is 0. 1 N and 0. 01 N m (SNR respectively. The relative error of each channel of the test system is less than 7%.
【作者单位】： 中国科学院长春光学精密机械与物理研究所;
【基金】：国家自然科学基金资助项目(11302222)
【分类号】：V416;TP212
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