加速度过阻尼地震检波器测量的研究

研究恒加速度过阻尼动圈式地震检波器参数的测量方法。通过对这种地震检波器的工作原理分析,给出了参数定义,推导了它在直流阶跃电流激励下的响应函数,明确了加速度过阻尼地震检波器实质是一个带通系统。基于对响应函数的分析,介绍了经典的参数辨识法测量,并提出了一种新的测量方法。该方法通过简单的测量、查表和数值计算便可获得加速度过阻尼地震检波器的阻尼、自然频率和灵敏度3个参数。

Study on parameters measurement for constant acceleration overdamped-geophones

It focuses on parameter measurement for constant acceleration overdamped coil type geophones.Through analyzing the principle of the geophone,the response function to a step DC stimulating is deduced along with the parameter definition.It turns out that a constant acceleration overdamped coil type geophone is materially a bandpass system.Upon discussing the response function,parameter identification as the classical measurement is introduced,and a novel parameters measurement method is proposed.With the method,the damping,the nature frequency and the sensitivity can be acquired through simple measurement,table check and numerical value calculation.