摘要
涡流地震检波器是一种较常规动圈式地震检波器有许多优点的新型检波器 ,但测量它的技术手段还不够完善。文章验证了涡流地震检波器的响应方程 ,是一个三阶一维振动系统 ,指出了涡流检波器输出信号与铜套相对外壳加速度不是简单地成正比的关系。文章叙述了涡流地震检波器的时域测量模型和频域测量模型 ,作者认为均匀分布噪声激励的ARMA(3 ,2 )模型法及回归分析的恒加速度扫频激励方法可以较好地估计涡流地震检波器的自然频率、截止频率。
The whirling geophone is a new type of geophone which has many virtues to the normal coil geophone,but now the technical means for measuring is not perfect enough. In this paper, the response equation of the whirling geolphone is verified,which clearly implies the whirling geophone is a three order and one dimension vibration system,and the saying is corrected that the output signal of the whirling geophone is in a direct proportion to the acceleration of the copper casing relative to the shell. In sequence,the measuring models both in time domain and in frequency domain are discussed. The author considers the nature frequency,cutoff frequency,damping and the transform coefficient can be better evaluated,through either the ARMA(3,2) model with such a stimulating signal as an uniform distribution noise,or the regressive analysis on the constant acceleration sweeping model.
出处
《石油仪器》
1999年第6期42-43,52,共2页
Petroleum Instruments
