一种振动传感器带内不平度补偿方法  

Method for Compensating Unevenness of Vibration Sensor in Band

作　　者：郭涛[1] 张丽梅 冯玉志 畅彦祥 GUO Tao;ZHANG Limei;FENG Yuzhi;CHANG Yanxiang(State Key Laboratory Science and Technology on Electronic Test and Measurement Laboratory,North University of China,Taiyuan Shanxi 030051,China;Beijing Institute of Astronautical System Engineering,Beijing 100076,China;A Representative Office of the Military Representative Office of the Army Equipment Department in Beijing,Beijing 100076,China)

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051 [2]北京宇航系统工程研究所,北京100076 [3]陆军装备部驻北京军事代表局某代表室,北京100076

出　　处：《电子器件》2021年第1期86-90,共5页Chinese Journal of Electron Devices

基　　金：2018年度国防科技重点实验室基金项目(61424140101)。

摘　　要：随着我国航天技术的发展,航天器结构上使用的高精度振动传感器需求越来越迫切,而带内不平度是影响测量精度的重要因素,本文针对1221L-1K0型号加速度传感器在4 kHz的带内不平度无法满足小于1 dB的使用要求,设计了一种使用一阶有源低通滤波电路进行带内不平度补偿的方法。列举了4只1221L-1K0加速度传感器在4 kHz内补偿电路的关键参数设计,基于Multisim软件对补偿后的电路进行仿真分析,并通过B&K 3629传感器校准系统对补偿调理后的振动传感器扫频标定,测试结果表明,补偿后的传感器带内不平度均小于1 dB。With the development of aerospace technology in China,the measurement accuracy demand of vibration sensors in spacecraft structures is increasingly high,and the in-band unevenness is an important factor that affects the measurement accuracy. In view of the fact that the in-band unevenness of 1221 L-1 K0 model acceleration sensor does not achieve less than 1 dB at 4 kHz,a method of compensating in-band unevenness using first-order active low-pass filter circuit is proposed in this paper. The key parameters of four 1221 L-1 K0 acceleration sensors compensation circuit in 4 kHz are listed. Based on Multisim software,the compensated circuits are simulated and analyzed. And the frequency sweep of the compensated vibration sensor is calibrated and adjusted by the B & K 3629 sensor calibration system. The experimental results show that the compensated in-band unevenness of the sensor is less than 1 dB.

关 键 词：振动传感器 1221L-1K0 带内不平度 低通滤波 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN721.5[自动化与计算机技术—控制科学与工程]