以地震波作为激励信号校准拾振器灵敏度

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (13) : 123-127.

论文

以地震波作为激励信号校准拾振器灵敏度

匙庆磊杨巧玉安欣吴志新

作者信息 +

A sensitivity calibration method for the vibration transducer based on seismic waves

Chi Qinglei, Yang Qiaoyu, An Xin, Wu Zhixin

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文章历史 +

摘要

针对各种测振仪器的校准问题，以地震波作为校准激励信号，对振动比较法校准进行了研究。分析了校准的影响因素，对地震波复现进行了较为详细的研究，在中国地震局工程力学研究所振动计量开放实验室的水平向低频标准振动台上，利用选取的几组地震波实际进行了地震波复现实验，计算了地震波复现的相关系数，结果表明相关系数在0.95以上，较好的实现了地震波复现。最后利用几组不同的地震波作为激励对拾振器灵敏度进行了校准，并和激光绝对法校准结果进行了对比，两种方法获得的灵敏度结果一致性较好。该方法对未来地震仪器的校准提供了一种可供选择的途径。

Abstract

The paper presentes a calibration method using the seismic wave as the excitation signal, together with an analysis of the influencing factors in calibration and an in-depth discussion of the reproduction of the seismic wave. Using a low frequency vibration calibration system in the Institute of Engineering Mechanics (IEM), a few seismic waves are reproduced and the correlation coefficient is calculated. It is shown that the correlation coefficient is larger than 0.95. In addition, the sensitivity of the vibration transducer is calibrated using the reproduced seismic wave and the sine wave separately, and the results agree with each other. The method proposed here offers a choice for future seismic instrument calibration.

导出引用

匙庆磊杨巧玉安欣吴志新. 以地震波作为激励信号校准拾振器灵敏度[J]. 振动与冲击, 2013, 32(13): 123-127

Chi Qinglei;Yang Qiaoyu;An Xin;Wu Zhixin. A sensitivity calibration method for the vibration transducer based on seismic waves[J]. Journal of Vibration and Shock, 2013, 32(13): 123-127