一种激光多普勒测振仪的自我消噪技术

杜岩; 刘敬楠; 谢谟文; 张晓勇; 霍磊晨

doi:10.19912/j.0254-0096.tynxb.2022-1308

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (12) : 260-265. DOI: 10.19912/j.0254-0096.tynxb.2022-1308

一种激光多普勒测振仪的自我消噪技术

杜岩, 刘敬楠, 谢谟文, 张晓勇, 霍磊晨

作者信息 +

SELF DENOISING TECHNIQUE FOR LASER DOPPLER VIBROMETER

Du Yan, Liu Jingnan, Xie Mowen, Zhang Xiaoyong, Huo Leichen

Author information +

文章历史 +

摘要

该文通过在系统中增加反光器,实现了仪器自振的测量,并依据仪器自振信号设计一种可自我矫正的新型激光多普勒测振系统,并与传统测振系统进行对比。新系统所测信号的频谱分析图明显更接近拾震器所测结果,均方误差平均值为0.08%。此外,新系统的测量误差平均降低了1.06个百分点,有效信号信噪比平均提升22.72 dB。新系统的测量精度会随着设备自振的增加有明显升高,但提升的效果会存在一定阈值限制。

Abstract

The paper realizes the measurement of instrumental self-oscillation by adding a reflector to the system, and designs a new self-correcting laser Doppler vibrometer system based on the instrumental self-oscillation signal and compares it with the traditional vibrometer system. The spectral analysis map of the signal measured by the new system is significantly closer to that measured by the vibration pickup, and the mean square error is 0.08%. In addition, the measurement error of the new system is reduced by 1.06% on average, and the effective signal-to-noise ratio is improved by 22.72 dB on average. The measurement accuracy of the new system increases significantly with the increase of self-oscillation of the equipment, but there is a certain threshold limitation of the enhancement effect.

导出引用

杜岩, 刘敬楠, 谢谟文, 张晓勇, 霍磊晨. 一种激光多普勒测振仪的自我消噪技术[J]. 太阳能学报. 2023, 44(12): 260-265 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1308

Du Yan, Liu Jingnan, Xie Mowen, Zhang Xiaoyong, Huo Leichen. SELF DENOISING TECHNIQUE FOR LASER DOPPLER VIBROMETER[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 260-265 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1308

中图分类号： TN45

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