摘要
针对大型结构的谐振频率低,用于其模态测试的振动通道多,系统复杂的特点,系统介绍了一种频率范围为(0.1~20)Hz、可用于现场低频振动测试系统的校准装置,有效地解决了运载火箭等大型结构模态试验的振动测试系统的现场整体校准问题,对于提高模态试验的效率和测试准确度起到了重要作用。
For large structures,the resonance frequency is very low and the model test system is complex with more test channels.A portable low frequency vibration calibration system for field service is introduced,the system has a frequency range from 0.1Hz to 20Hz and it was used in field calibration service for the model test system of large structures such as launch vehicle etc.Using this calibration system,the testing efficiency and measurement accuracy were significantly improved.
作者
朱刚
杨晓伟
戴宜霖
田俊宏
崔忠亮
ZHU Gang;YANG Xiao-wei;DAI Yi-lin;TIAN Jun-hong;CUI Zhong-liang(Beijing Aerospace Institute for Metrology and Measurement Technology,Beijing 100076,China)
出处
《宇航计测技术》
CSCD
2020年第6期20-24,共5页
Journal of Astronautic Metrology and Measurement
基金
国家重点研发计划资助(2017YFF0205005)。
关键词
低频
振动
校准
Low⁃frequency
Vibration
Calibration
