摘要
中国计量科学研究院研制出频率范围0.000 5 Hz^1 200 Hz高精度角振动基准装置,低频角振动装置最大角位移300°,中频角振动装置最大角位移60°,角加速度范围为0.04 rad/s^2~2 000 rad/s^2。装置实现了衍射式外差激光干涉仪测量方法,以及圆光栅和双光束外差激光干涉仪差动测量。角加速度复灵敏度测量不确定度(k=2):参考点优于0.5%,0.5°,通频带优于1.0%,1.0°。
Primary standard of angular vibration devices have been developed in the National institute of Metrology.The maximum angular displacement of low angular vibration device is 300° and medium angular vibration device is 60°.The dynamic range of angular accelerate is 0. 04 rad/s^2 to 2 000 rad/s^2. Diffraction grating and heterodyne laser interferometer acted as the main measurement method. At the same time,circular grating and two-beam heterodyne laser interferometer differential measurement have been realized. Uncertainty of measurement of angular accelerate sensitivity（ k = 2） is： 0. 5%,0. 5°（ reference）,and others are better than 1. 0%,1. 0° in whole frequency band.
作者
刘爱东
于梅
何闻
LIU Aidong;YU Mei;HE Wen(National Institute of Metrology,Beijing 100029,China;Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province,School of Mechanical Engineering,Zhejiang University,Hangzhou 310027,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2018年第12期216-219,共4页
Journal of Vibration and Shock
关键词
角振动
角加速度
角速度
角位移
外差激光干涉仪
衍射光栅
正弦逼近法
angular vibration
angular accelerate
angular velocity
angular displacement
heterodyne laser intefferometer
diffraction grating
sine approximation method
