基于磁阻尼的超低频绝对振动传感器机理研究  

Theoretical research about ultra-low frequency of absolute vibration sensor in magnetic damper

作　　者：夏灿[1] 余水宝[1] 黄相平[1] 

机构地区：[1]浙江师范大学,浙江金华321004

出　　处：《微型机与应用》2014年第5期74-75,78,共3页Microcomputer & Its Applications

摘　　要：通过分析普通磁电式速度传感器在测量超低频绝对振动信号时存在固有缺陷带来的问题,介绍了基于磁阻尼的超低频绝对振动传感器机理,系统用磁阻尼代替机械阻尼工作,克服了普通磁电式速度传感器体积大、质量大、不便运输等问题,下限频率达到了0.25 Hz。The theoretical research about ultra-low frequency of absolute vibration sensor in magnetic damper , we raise it by analyzing the inherent vice, which exist in ordinary magnetoelectric speed sensor when we measure the ultra-low frequency. In our study, magnetic damper replace mechanical damper, and solve the problem in ordinary magnetoelectric speed sensor, just like more bigger, heavier, harder to move and so on. At the same time, the lower frequency limit attain 0.25 Hz.

关 键 词：超低频 绝对振动 机械阻尼 磁阻尼 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]