The application of the digital filtering algorithms in the signal processing system of the micro-displacement sensor

Wusen Li; Wenjian Chen; Yongjun Qi

doi:10.1117/12.2504870

18 January 2019 The application of the digital filtering algorithms in the signal processing system of the micro-displacement sensor

Wusen Li, Wenjian Chen, Yongjun Qi

Author Affiliations +

Proceedings Volume 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment; 108390C (2019) https://doi.org/10.1117/12.2504870
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

In the Active Optical System, the precise measurement of the micro-displacement is the important evidence for the adjustment of the segmented mirrors and has great influence upon the full playing of the system’s optical performance. In this paper, both the median and adaptive filters are designed and simulated based on MatLab platform to remove the noises in the received signal of the micro-displacement sensor which has the features of low frequency, small amplitude and being susceptible to interference. The algorithms are also verified in the real micro-displacement measuring system. The results show that both of these two algorithms are effective and contribute to improve the system’s performance.

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Wusen Li, Wenjian Chen, and Yongjun Qi "The application of the digital filtering algorithms in the signal processing system of the micro-displacement sensor", Proc. SPIE 10839, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 108390C (18 January 2019); https://doi.org/10.1117/12.2504870

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KEYWORDS

Digital filtering

MATLAB

Sensors

Interference (communication)

Filtering (signal processing)

Signal processing

Computer simulations

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