摘要
目的:针对空间对接机构关键部件扭矩测量装置的测量精度易受共振干扰的问题,提出一种基于有限元分析的扭矩测量装置有效工作频限辨识方法,以确定装置的有效工作频率区间。方法:采用ANSYS软件分析装置在高低温环境影响下的模态特性,得出装置在温度作用下的前6阶固有频率及其共振带集合,求共振带集合的补集即可得到装置的有效工作频限。结果:由温度引起的装置前6阶固有频率最大相对变化量为0.2%,对装置有效工作频限计算结果的影响较小,该装置的工作频率均处在有效工作频限之内,在工作过程中不会发生共振现象。结论:该方法填补了空间对接机构关键部件扭矩测量装置模态特性研究的空缺,对后续开展空间对接机构关键部件的扭矩性能测试工作有着一定的指导意义。
Aims:In view of the problem that the measurement accuracy of the torque measuring device for key components of the space docking mechanism was easily affected by resonance,a method for identifying the effective working frequency limit of the torque measuring device based on finite element analysis was proposed to determine the effective working frequency range of the device.Methods:We analyzed the modal characteristics of the device under the influence of high and low temperature environments with the ANSYS software and obtained the first 6 natural frequencies and the resonance band sets of the device under the action of temperatures.The effective working frequency limit of the device was obtained by calculating the complement of the resonance band set.Results:The maximum relative variation of the first 6 natural frequencies of the device caused by the temperature was 0.2%,which had little impact on the calculation results of the effective working frequency limit of the device.The working frequencies of the device were within the effective working frequency limit;and resonance would not occur during the operation.Conclusions:This method fills the gap in the research on the modal characteristics of the torque measuring device of the key components of the space docking mechanism and has a certain guiding significance for the subsequent torque performance test of the key components of the space docking mechanism.
作者
丁鸿
胡佳成
林杰俊
蒋卫杰
张瀚文
王东超
DING Hong;HU Jiacheng;LIN Jiejun;JIANG Weijie;ZHANG Hanwen;WANG Dongchao(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China;Shanghai Marine Equipment Research Institute,Shanghai 200031,China;Shanghai Aerospace Equipment Manufacturer Co.,Ltd.,Shanghai 201110,China)
出处
《中国计量大学学报》
2022年第1期7-14,共8页
Journal of China University of Metrology
基金
国防科工局技术基础计划项目(No.JSZL2019207B011)。
关键词
空间对接机构
扭矩测量装置
热影响分析
模态分析
space docking mechanism
torque measuring device
heat effect analysis
modal analysis
