马洁美, 滕云田, 左爱斌, 范晓勇, 张炼. 2014: 加速度谐波失真度对速度型地震计振动台标定的影响. 地震学报, 36(6): 1124-1130. DOI: 10.3969/j.issn.0253-3782.2014.06.013
引用本文: 马洁美, 滕云田, 左爱斌, 范晓勇, 张炼. 2014: 加速度谐波失真度对速度型地震计振动台标定的影响. 地震学报, 36(6): 1124-1130. DOI: 10.3969/j.issn.0253-3782.2014.06.013
Ma Jiemei, Teng Yuntian, Zuo Aibin, Fan Xiaoyong, Zhang Lian. 2014: Influence of acceleration harmonic distortion on shake table calibration for velocity seismometer. Acta Seismologica Sinica, 36(6): 1124-1130. DOI: 10.3969/j.issn.0253-3782.2014.06.013
Citation: Ma Jiemei, Teng Yuntian, Zuo Aibin, Fan Xiaoyong, Zhang Lian. 2014: Influence of acceleration harmonic distortion on shake table calibration for velocity seismometer. Acta Seismologica Sinica, 36(6): 1124-1130. DOI: 10.3969/j.issn.0253-3782.2014.06.013

加速度谐波失真度对速度型地震计振动台标定的影响

Influence of acceleration harmonic distortion on shake table calibration for velocity seismometer

  • 摘要: 本文对加速度和速度谐波失真度进行了理论计算, 并基于美国国家仪器公司研发的实验室虚拟仪器工程平台(Labview), 设计出低频振动信号数字化测量系统, 实现了振动台面对加速度波形、 速度波形及其失真度的测量. 基于该系统的实验数据与中国计量科学研究院设定的参考值偏差较小. 对地震计的测试结果表明, 加速度波形及其失真度对振动波形的精度描述更为严格, 能有效提高地震计振动测试的准确程度.

     

    Abstract: Acceleration and velocity harmonic distortion are theoretically analyzed, and then based on laboratory virtual instrument engineering workbench (Labview for short) digital measuring system is designed for the low-frequency vibration signals. Deviation between testing data from this system and the reference value provided by National Institute of Metrology is minor. Seismometer calibration results indicate that acceleration waveform and its distortion reflect the actual condition of the shake table in a much harsher way, providing more precise information for the seismometer test on the shake table.

     

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