A study of an angle vibration measuring method

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (12) : 216-219.

LIU Aidong1, YU Mei1, HE Wen2

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Abstract

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.

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LIU Aidong1, YU Mei1, HE Wen2. A study of an angle vibration measuring method[J]. Journal of Vibration and Shock, 2018, 37(12): 216-219

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