冲击加速度传感器频域校准技术研究  

Research on Frequency Domain Calibration Technology of Impact Acceleration Sensors

作　　者：曹亦庆[1] CAO Yiqing(Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2021年第2期139-143,共5页Metrology & Measurement Technology

基　　金：国家“十三五”技术基础科研项目(JSJL2016205A006)。

摘　　要：为获得更为真实的传感器频响特性,利用激光干涉仪对传感器进行动态校准,在传感器输入和输出数据的基础上,确定系统模型结构、阶次,基于输出误差模型,采用系统辨识实验法,辨识传感器模型的各项参数,从而建立被校冲击加速度传感器的数学等价模型,进而将模型方程转换为传递函数,并绘制出传感器的幅频、相频特性曲线,最终实现被校传感器的冲击频域校准。In order to obtain more realistic frequency response characteristics of the sensors,the laser interferometer is used to dynamically calibrate the sensors.Based on the input and output data of the sensors,the structure and order of the system model are determined.Based on the output error model,the system identification experiment method is adopted to identify the parameters of the sensor model,so as to establish the mathematical equivalent model of the calibrated impact acceleration sensors.Then the model equation is converted into the transfer function,and the amplitude-frequency and phase-frequency characteristic curves of the sensors are plotted.Finally,the impact frequency domain calibration of the calibrated sensor is realized.

关 键 词：幅频曲线 工作频率系统辨识 频域校准 

分 类 号：TB936[一般工业技术—计量学]