Research on adaptive interferometric measurement of complex vibration environment

Zhi-Liang Zhao; Min Liu; Li-Hua Chen; Zi-Jia Zhao; Zhi-Hua Zhang

doi:10.1117/12.2505551

18 January 2019 Research on adaptive interferometric measurement of complex vibration environment

Zhi-Liang Zhao, Min Liu, Li-Hua Chen, Zi-Jia Zhao, Zhi-Hua Zhang

Proceedings Volume 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment; 1083912 (2019) https://doi.org/10.1117/12.2505551
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

In complex phase-shift interferometry, an adaptive phase algorithm based on complex vibration environment is proposed. The phase shift amount calculation of two or more interferometric images could be achieved by self-adaptive phase-shift algorithm (SPA), a closed-loop feedback system is constructed to adaptively correct the characteristic phase shift amount in which the phase shift step length is a set value, thereby realizing self-correction of the phase shift error. According to the actual examinations, the single-step phase shift error is less than π/50, and PV and RMS values of plane objects were obtained respectively better than λ/20 and λ/100. Additionally, the feasibility of the algorithm and the self-adaptive correction system for complex vibration environment were verified. The results show that the proposed method achieves high-speed and high-precision phase-shift extraction, greatly reducing the phase shift error caused by vibration interference, and the overall operation of measurement process is simple relatively.

Citation Download Citation

Zhi-Liang Zhao, Min Liu, Li-Hua Chen, Zi-Jia Zhao, and Zhi-Hua Zhang "Research on adaptive interferometric measurement of complex vibration environment", Proc. SPIE 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 1083912 (18 January 2019); https://doi.org/10.1117/12.2505551

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KEYWORDS

Phase shifts

Interferometry

Phase shift keying

Environmental sensing

Phase interferometry

Photovoltaics

Imaging systems

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