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《Journal of Vibration and Shock》 2018-12
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A study of an angle vibration measuring method

LIU Aidong;YU Mei;HE Wen;National Institute of Metrology;Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province,School of Mechanical Engineering,Zhejiang University;  
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.
【CateGory Index】: TB936
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