基于滞后补偿法的磁电式振动传感器低频拓频研究  

Research on low frequency expansion of magnetoelectric vibration sensors based on lag compensation method

作　　者：焦亮 JIAO Liang(Jiangsu Donghua Testing Technology Co.,Ltd.,Taizhou 214500,China)

机构地区：[1]江苏东华测试技术股份有限公司,江苏泰州214500

出　　处：《计测技术》2024年第3期104-110,共7页Metrology & Measurement Technology

基　　金：国家重点研发计划项目(SQ2022YFB3200247)。

摘　　要：为提高磁电式振动传感器在低频段的响应性能,提出一种基于滞后补偿法的磁电式振动传感器低频拓频方法。首先分析磁电式振动传感器的工作原理及数学模型,得出影响传感器低频测量性能的关键参数;然后设计二阶滞后补偿电路,引入低频补偿-滤波环节优化输入与输出的传递函数,并利用MATLAB软件进行仿真验证;最后搭建振动对照测试系统进行实验验证。结果表明:基于滞后补偿法的磁电式振动传感器低频拓频方法可将固有频率为2.02 Hz的磁电式振动传感器的测量带宽拓频至0.202 Hz,验证了该方法的可行性,为推动小型磁电式振动传感器在低频测量场景下的应用提供了重要技术支撑。To improve the response performance of magneto electric vibration sensors in the low frequency range,a low-frequency extension method for magneto electric vibration sensors based on hysteresis compensation is proposed.Firstly,the working principle and mathematical model of the magneto electric vibration sensor were analyzed to identify the key parameters that affect the low-frequency measurement performance of the sensor.Then a second-order hysteresis compensation circuit was designed,a low-frequency compensation filtering link was introduced to optimize the transfer functions of input and output,and MATLAB software was used for simulation verification.Finally,a vibration comparison testing system was established for experimental verification.The results showed that the low-frequency extension method of magneto electric vibration sensor based on hysteresis compensation can extend the measurement bandwidth of a magneto electric vibration sensor with a natural frequency of 2.02 Hz to 0.202 Hz,verifying the feasibility of this method and providing important technical support for promoting the application of small magneto electric vibration sensors in low-frequency measurement scenarios.

关 键 词：振动传感器 低频拓频 灵敏度 固有频率 补偿电路 

分 类 号：TB936[一般工业技术—计量学] TP212[机械工程—测试计量技术及仪器] P315[自动化与计算机技术—检测技术与自动化装置]