941B型超低频测振仪的研究  

Model 941B ultra-low frequency vibration gauge

作　　者：杨巧玉 娄良琼[1] 杨立志[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2005年第4期174-179,共6页Earthquake Engineering and Engineering Dynamics

基　　金：哈尔滨市重点科技攻关项目(0014211044);科技部技术开发研究专项基金项目(217)

摘　　要：本文介绍了941B型超低频测振仪的原理和技术性能。将无源电路补偿技术应用于优化设计的往复式小质量摆上,实现了测量量程和低频特性的扩展,克服了回转摆式低频测振仪簧片易损、需要调零、频带较窄的缺点。该仪器不仅可用来测量地面和工程结构的超低频振动的加速度、速度和位移,而且可用于爆破、冲击等较高频的振动测量。The principle and technical capability is introduced in the paper. The passive circuitry compensation technology is applied to optimize the small mass to-and-fro pendulum, enlarge the measuring range and the low-frequency characteristic, and some shortcomings in the rotating-pendulum low-frequency sensor, such as reed being prone to damage, zero adjustment, and narrow frequency range, are overcome. The instrument not only can measure the ultra-low frequency acceleration, velocity and displacement of the ground and structures, but also can be used to measure the high frequency vibration of explosion and impact.

关 键 词：拾振器 超低频 大位移 

分 类 号：P315.621[天文地球—地震学]