磁电式低频振动传感器原位校准改进型系统的设计与实现  

Design and implementation of in-situ improved calibration system of low-frequency magneto-electric vibration transducers

作　　者：尚帅锟 高峰[1] 杨学山[1] 杨巧玉 SHANG Shuaikun;GAO Feng;YANG Xueshan;YANG Qiaoyu(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Sanhe 065201,China)

机构地区：[1]中国地震局工程力学研究所、地震工程与工程振动重点实验室、地震灾害防治应急管理部重点实验室,河北三河065201

出　　处：《传感器与微系统》2024年第3期96-98,共3页Transducer and Microsystem Technologies

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(2020B04)。

摘　　要：针对拾振器的原位校准在高频段的灵敏度误差大的问题,构建了改进校准电路后系统模型。通过实验,得到原位校准与激光干涉法的归一化灵敏度的相对误差,发现改进电路后的相对误差小于改进电路前的相对误差。此外,在实验过程中,水平向传感器对于安装角度有较高的要求,分别改变传感器与水平面的夹角,获得了激光干涉法与原位校准法的校准结果,发现当传感器与水平面有一定夹角时,使用改进后校准的方法后,低频灵敏度与高频灵敏度的误差变大。Aiming at the problem of large calibration errors in high frequency range of the in-situ calibration of the pickup,a system model with the improved calibration circuit is constructed.Through experiments,the relative error of the normalized sensitivity of the in-situ calibration and laser interference method is obtained,and it is found that the relative error after the improved circuit is smaller than the relative error before the improved circuit.In addition,during the experiments,the horizontal sensor has high requirements of the installation angle,and calibration result of laser interference method and the in-situ calibration method are obtained by changing the angle between the sensor and the horizontal surface,and it is found that when the sensor had a certain angle with the horizontal surface,the calibration error of sensitivity in low frequency and high frequency become larger by using the improved calibration method.

关 键 词：灵敏度 磁电式传感器 原位校准 低频振动 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] P315[自动化与计算机技术—控制科学与工程]