A dynamic angle metrology system based on fibre-optic gyroscope and rotary table

• Autorzy: Chen Lei , Zhou Yilan , Zhang Dengwei , Shu Xiaowu , Liu Cheng

Identyfikatory

DOI

10.24425/mms.2019.129574

• Języki publikacji: EN

Abstrakty

EN

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 DAM accuracy 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.

Słowa kluczowe

EN

circular grating angle encoder; fibre-optic gyroscope; dynamic angle metrology

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2019
• Tom: Vol. 26, nr 3
• Strony: 497--504
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr., wzory

Twórcy

autor

Chen Lei

• Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, Zhejiang 310027, China

autor

Zhou Yilan

• Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, Zhejiang 310027, China

autor

Zhang Dengwei

• Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, Zhejiang 310027, China

autor

Shu Xiaowu

• Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, Zhejiang 310027, China

autor

Liu Cheng

• Zhejiang University, State Key Laboratory of Modern Optical Instrumentation, Hangzhou, Zhejiang 310027, China

Bibliografia

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Uwagi

EN

1. The authors would like to thank the State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, China. This work was financially supported by The National Key Researchand Development Program of China (2017YFF0204901), the National Natural Science Foundation of China (Grant No. 61203190), the Natural Science Foundation of Zhejiang Province (Grant No. LY17F030010) and The Fundamental Research Funds for Central Universities and Colleges Funding (2016XZZX004-01).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).