速度传感反馈地震计的动态范围上限

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英文篇名：Upper limit for dynamic range of feedback seismometer with a velocity transducer 中文刊名：地震地磁观测与研究 英文刊名：Seismological and Geomagnetic Observation and Research 作者：饶文松 ; 杨晓源 英文作者：Rao Wensong and Yang Xiaoyuan(Earthquake Administration of Sichuan Province ; Chengdu 610041 ; China) 中文关键词：速度传感 ; 反馈地震计 ; 环路滤波 ; 动态范围上限 英文关键词：velocity transducer ; feedback seismometer ; loop filter ; upper limit for dynamic range 出版日期：2007-10-25 机构：四川省地震局,四川省地震局, 年：2007 期：05 出版单位：地震地磁观测与研究

摘要

在开环参数一定的条件下,速度传感反馈地震计中的环路滤波是影响地震计主要技术指标的关键环节之一。本文探讨了一阶极点高通、一阶极点低通、一阶零点高通、双一阶和零阶环路滤波在扩展地震计动态范围上限方面的优缺点。研究指出,对于用闭环反馈直接生成主导二阶极点的速度传感反馈地震计,一阶零点高通环路滤波的优点较多;若允许在环外生成主导二阶极点,则零阶环路滤波也不失为一个较好的方案。
On condition that the open-loop parameters are given, the loop filter of feedback seismometer with a velocity transducer is one of the key factors of effecting seismometer main technical performances. With regard to extending the upper limit for dynamic range of seismometer, the merits and demerits of the loop filter are discussed. The loop filter is composed of first-order pole high-pass, first-order pole low-pass, first-order zero high-pass, first-order whose factors of numerator and denominator are all nonzero, and zero-order filter. Researcher reports that for feedback seismometer with a velocity transducer, if dominant second poles are made directly by closed-loop feedback, the first-order zero high-pass filter has many advantages over others. if dominant second poles are made outside loop, the zero-order loop filter is a marvelous scheme.

引文

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    中国科学院地球物理研究所编著.1978.地震仪器概论[M].北京:科学出版社