TY - JOUR N2 - Dynamic angle measurement (DAM) plays an important role in precision machining, aerospace, military and artificial intelligence. Because of its advantages including high sensitivity, solid state and miniaturization, fibre-optic gyroscope (FOG) has great application prospects in the field of DAM. In this paper, we propose a dynamic angle metrology method based on FOG and a rotary table to evaluate the DAMaccuracy with FOG. The system synchronously collects data from the FOG and rotary table, and analyses the DAM accuracy of the FOG for different sway conditions compared with that of the angle obtained from the rotary table. An angle encoder in the rotary table provides absolute or incremental angular displacement output with angular displacement measurement accuracy of 10′′ (0:0028◦) and angular displacement repeat positioning accuracy of 3′′ (0:00083◦), and can be used as an angle reference. The experimental results show that the DAM accuracy of the FOG is better than 0:0028◦ obtained with the angular encoder, and the absolute DAM accuracy of the FOG is better than 0:0048◦ for given conditions. At the same time, for the multi-path signal synchronization problem in the metrology field, this paper proposes a signal delay measurement method combining test and algorithm procedures, which can control a delay within 25 μs. L1 - http://journals.pan.pl/Content/113093/PDF/04_MMS_3_INTERNET.pdf L2 - http://journals.pan.pl/Content/113093 PY - 2019 IS - No 3 EP - 504 DO - 10.24425/mms.2019.129574 KW - circular grating angle encoder KW - fibre-optic gyroscope KW - dynamic angle metrology A1 - Chen, Lei A1 - Zhou, Yilan A1 - Zhang, Dengwei A1 - Shu, Xiaowu A1 - Liu, Cheng PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation VL - vol. 26 DA - 2019.09.23 T1 - A dynamic angle metrology system based on fibre-optic gyroscope and rotary table SP - 497 UR - http://journals.pan.pl/dlibra/publication/edition/113093 T2 - Metrology and Measurement Systems ER -