传感技术学报2025，Vol.38Issue(4)：571-578,8.DOI:10.3969/j.issn.1004-1699.2025.04.001
基于多谐差相信号的MHD微角振动传感器频率特性测试法
Frequency Characteristic Test Method Based on Schroeder Phased Harmonic Signal for MHD Micro-angular Vibration Sensor
摘要
Abstract
Frequency characteristic is an important index to measure the dynamic performance of Magneto Hydro Dynamic(MHD)micro-angular vibration sensor.The accurate evaluation of this index is significant to the development and improvement of the sensor.In order to solve the problem of low efficiency of MHD micro-angular vibration sensor's frequency characteristic test with traditional sinusoidal sweep method,the least square frequency characteristic test method based on the Schroeder phased harmonic signal(SPHS)is studied.The test effects of the method is verified through simulation and comparison experiments.The experimental results show that the relative error of the scale factor is kept within±1.5％,the coefficient of variation is less than 1％,the absolute error of the phase is kept within±0.50°,the coefficient of variation is less than 8％,and the nonlinearity error is kept within±2％.The test time is reduced by 94.74％compared with that of the traditional sinusoidal sweep method.The least square frequency characteristic test method based on SPHS can replace the traditional sinusoidal sweep method based on single-frequency sine signal for the rapid and accurate frequency characteristic test of MHD micro-angular vibration sensor.关键词
MHD微角振动传感器/频率特性测试/多谐差相信号/最小二乘Key words
MHD micro-angular vibration sensor/frequency characteristic test/SPHS/least square分类
机械制造引用本文复制引用
朱占霞,李醒飞,刘帆,夏赣民,李嘉峰,李建翔,宋林珂,闫慧敏..基于多谐差相信号的MHD微角振动传感器频率特性测试法[J].传感技术学报,2025,38(4):571-578,8.基金项目
国家自然科学基金国家重大科研仪器研制项目(61427810) （61427810）
深海技术科学太湖实验室"揭榜挂帅"项目(2022JBGS03001) （2022JBGS03001）
