航天器6维微振动力测试系统的设计与试验

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400Hz;力及力矩分辨率分别可达到0.1N及0.01N·m（SNR大于10）;在频域上0-400Hz范围内,该测试系统各通道的相对误差在7%以内....

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Bibliographic Details
Published in江苏大学学报（自然科学版） Vol. 38; no. 1; pp. 56 - 61
Main Author 夏明一 秦超 贺帅
Format Journal Article
LanguageChinese
Published 中国科学院 长春光学精密机械与物理研究所,吉林 长春,130033 2017
Subjects
动态标定
压电传感器
有限元分析
空间微振动
软件设计
动态标定
空间微振动
有限元分析
space microvibration
software design
piezoelectric sensor
软件设计
dynamic calibration
finite element analysis
压电传感器
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ISSN1671-7775
DOI10.3969/j.issn.1671-7775.2017.01.011

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Summary: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400Hz;力及力矩分辨率分别可达到0.1N及0.01N·m（SNR大于10）;在频域上0-400Hz范围内,该测试系统各通道的相对误差在7%以内.
Bibliography:XIA Mingyi, QIN Chao, HE Shuai（Changchun Institute of Optics , Fine Mechanics and Physics , Chinese Academy of Science , Changchun , Jilin 130033 , China）
32-1668/N
In order to test the spacecraft microvibration performance under different conditions at low and ultralow frequency,a six-dimension microvibration test system was designed with piezoelectric sensor as core.The software was designed to realize real-time acquisition analysis and sensor signals processing in space with calibration,and the six-dimension force was obtained at last.The working principle and the dynamic calibration method of test system were introduced,and the test system was also simulated and tested.The results show that the relative error of the first five natural frequencies is within 5%,and the first order is more than 400 Hz.The test resolution of force and torque can respectively reach 0.1 N and 0.01 N·m with SNR more than 1 0.The relative error of six components is within 7%in dynamic testing at the frequency range of 0 to 400 Hz.
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ISSN:1671-7775
DOI:10.3969/j.issn.1671-7775.2017.01.011