Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer

Heterodyne interferometry is a high-precision method applied in roll angle measurements. Phase metering is essential for high precision. During a high-precision measurement, a phase fluctuation appears even when the roll angle does not vary, which has never been analyzed before. Herein, the reason f...

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Main Authors: Junhui Huang, Zhao Wang, Jianmin Gao, Bao Yu
Format: Article
Language:English
Published: MDPI AG 2016-08-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/16/8/1214
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author Junhui Huang
Zhao Wang
Jianmin Gao
Bao Yu
author_facet Junhui Huang
Zhao Wang
Jianmin Gao
Bao Yu
author_sort Junhui Huang
collection DOAJ
description Heterodyne interferometry is a high-precision method applied in roll angle measurements. Phase metering is essential for high precision. During a high-precision measurement, a phase fluctuation appears even when the roll angle does not vary, which has never been analyzed before. Herein, the reason for the phase fluctuation is revealed, which results from the frequency-difference fluctuation and time difference between measurement and reference beams. A mathematical model of that phase-fluctuation mechanism is established, and that model provides a theoretical basis for analyzing and reducing the phase fluctuation. The impact that the main factors have on the phase metering is analyzed quantitatively, and experiments are carried out to validate the model. Finally, the phase fluctuation decreases to 0.02° by frequency reduction, which conversely verifies the theoretical model.
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spelling doaj.art-ec108db3ab22480a88e407ad86fd39902022-12-22T04:22:17ZengMDPI AGSensors1424-82202016-08-01168121410.3390/s16081214s16081214Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne InterferometerJunhui Huang0Zhao Wang1Jianmin Gao2Bao Yu3School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaHeterodyne interferometry is a high-precision method applied in roll angle measurements. Phase metering is essential for high precision. During a high-precision measurement, a phase fluctuation appears even when the roll angle does not vary, which has never been analyzed before. Herein, the reason for the phase fluctuation is revealed, which results from the frequency-difference fluctuation and time difference between measurement and reference beams. A mathematical model of that phase-fluctuation mechanism is established, and that model provides a theoretical basis for analyzing and reducing the phase fluctuation. The impact that the main factors have on the phase metering is analyzed quantitatively, and experiments are carried out to validate the model. Finally, the phase fluctuation decreases to 0.02° by frequency reduction, which conversely verifies the theoretical model.http://www.mdpi.com/1424-8220/16/8/1214roll angleheterodyne interferometerphase meteringphase fluctuationmodeling
spellingShingle Junhui Huang
Zhao Wang
Jianmin Gao
Bao Yu
Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
Sensors
roll angle
heterodyne interferometer
phase metering
phase fluctuation
modeling
title Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
title_full Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
title_fullStr Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
title_full_unstemmed Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
title_short Modeling and Analysis of Phase Fluctuation in a High-Precision Roll Angle Measurement Based on a Heterodyne Interferometer
title_sort modeling and analysis of phase fluctuation in a high precision roll angle measurement based on a heterodyne interferometer
topic roll angle
heterodyne interferometer
phase metering
phase fluctuation
modeling
url http://www.mdpi.com/1424-8220/16/8/1214
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AT jianmingao modelingandanalysisofphasefluctuationinahighprecisionrollanglemeasurementbasedonaheterodyneinterferometer
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