压磁式非接触测力传感器的研究与设计  

Design and Study of the Non-contact Force Sensor Based on Magnetoelastic Effect

作　　者：石延平[1] 张永忠[2] 

机构地区：[1]淮海工学院,连云港222005 [2]中国矿业大学,徐州221008

出　　处：《中国机械工程》2005年第20期1805-1809,共5页China Mechanical Engineering

基　　金：江苏省教育厅自然科学基金资助项目(03KJD460035)

摘　　要：为了实现动态在线测力,以便对设备实施工况监测和故障诊断,设计了一种三磁极压磁式非接触测力传感器。论述了传感器的结构与工作原理,导出了该传感器感应电压输出方程。通过试验,分析了传感器励磁电流强度、频率以及测试磁隙对其输出特性的影响,确定出了合理的磁隙范围。实测结果表明,压磁式非接触测力传感器所能达到的测试精度和灵敏度能够满足一般工程应用要求。In order to online detect force and realize trouble monitoring for mechanical equipment, this paper designed a non-contact force sensor with three magnetic poles based on magneto-elastic effect. Besides, it made discussions on its structure and working principles, derived its equations of induced voltage outputs. Experiments were conducted to analyze the influence of field current intensity, frequency, and the gap between the probe of sensor and the surface of tested material upon the output characteristics of the sensor. Results show that the sensor＇s measuring precision and sensitivity can meet the application demands for general projects.

关 键 词：测力传感器 压磁效应 应力检测 非接触 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置]