A Comparison Angular Vibration Calibration Approach Based on the IFOG

Wang, Xianfan; Mou, Jiapeng; Miao, Linchang; Huang, Tengchao; Che, Shuangliang

doi:10.1007/s12647-021-00464-y

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Next, a high-frequency angular vibration exciter system was established to evaluate the dynamic performance of the SPMAI. Referring to [19], the angular vibration exciter system used comprised a signal generator (XF1965, NF), a power amplifier (ATA-3040, Aigtek) and an angular vibration table. The signal generator produced a sinusoidal electrical signal, the amplitude and frequency of which could be adjusted.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Sinusoidal Phase-Modulated Angle Interferometer for Angular Vibration Measurement

Wang

Yang

Chen

et al. 2021

Sensors

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Primary angular vibration calibration devices based on laser interferometers play a crucial role in evaluating the dynamic performance of inertial sensing devices. Here, we propose a sinusoidal phase-modulated angle interferometer (SPMAI) to realize angular vibration measurements over a frequency range of 1–1000 Hz, in which the sinusoidal measurement retro-reflector (SMR) and the phase generation carrier (PGC) demodulation algorithm are adopted to track the dynamic angle variation. A comprehensive theoretical analysis is presented to reveal the relationship between demodulation performance of the SPMAI and several factors, such as phase modulation depth, carrier phase delay and sampling frequency. Both the simulated and experimental results demonstrate that the proposed SPMAI can achieve an angular vibration measurement with amplitude of sub-arcsecond under given parameters. Using the proposed SPMAI, the frequency bandwidth of an interferometric fiber-optic gyroscope (IFOG) is successfully determined to be 848 Hz.

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Section: Experiments and Resultsmentioning

confidence: 99%