| 振动枱原理和地震检波器的试验 |
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| 引用本文： | 泰馨菱,曾融生,宫维枢.振动枱原理和地震检波器的试验[J].地球物理学报,1957,6(1):15-34. |
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| 作者姓名： | 泰馨菱 曾融生 宫维枢 |
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| 作者单位： | 中国科学院地球物理研究所 |
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| 摘 要： | 地震检波器惯性体的运动方程可以写成: （1） n0为检波器在无阻尼时的固有圆频率,h为检波器的阻尼常数,y为地面的位移。如用动圈检波器,其输出电压E的方程可写成: （2） S=Bl,称为检波器的电磁放大系数,B为所用磁钢空气隙中的磁感量,l为线圈的有效长度。自公式（1）及（2）可以见到:如果知道了检波器的常数h,n0和S,检波器的特性便完全确定;然后我们就可以推算检波器惯性体的运动,或是线圈的输出电压与地面运动
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| 关 键 词： | 机械振动 地震检波器 电磁放大系数 任意波形 电磁振动 输出电压 地球物理学 功率放大器 惯性 运动方程 |
THE PRINCIPLES OF SHAKING TABLES AND THE TESTING OF A SEISMIC GEOPHONE |
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| CHIN HSIN-LING,TSENG JUNG-SHENG,KUNG WEI-SHU.THE PRINCIPLES OF SHAKING TABLES AND THE TESTING OF A SEISMIC GEOPHONE[J].Chinese Journal of Geophysics,1957,6(1):15-34. |
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| Authors: | CHIN HSIN-LING TSENG JUNG-SHENG KUNG WEI-SHU |
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| Institution: | Institute of Geophysics and Meteorology, Academia Sinica |
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| Abstract: | For testing the characteristics of seismic geophones, shaking tables of both, electrical and mechanical drive were constructed. In order to examine the effect of transients on the geophone, the elecetrically driven shaking table was also provided with a generator of arbitrary wave form, using the principle of variable area sound-on-film method. This paper describes the principles underlying the various kinds of measurements, and the experimental techniques and results. In addition, the method of testing by feeding the geophone with a sinusoidal electrical signal of variable frequency is also discussed briefly as regards to its principle and the limitations of its use. |
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