锻压技术

基于电涡流传感器的锻锤锤头位移检测系统设计

英文标题：Design of displacement measurement system for hammerhead of forging hammer

作者：廖志凌陈子国梅从立薛斌斌严厚广

关键词：液压模锻锤电涡流位移传感器位移检测 Ansoft Maxwell软件非线性拟合

分类号：

出版年,卷(期):页码：2014,39(1):121-125

摘要：

针对锻压现场强振动、高温度、多粉尘的特点，提出了一种基于电涡流位移传感器的锤头位移检测方案，以解决锻件尺寸在线监控的问题。该方案在锤头侧面垂直方向上加工出等距凹槽作为刻度标尺，电涡流传感器探头安装在机架上且正对凹槽刻度标尺的位置，通过采集锤头运动过程中传感器输出电压信号的动态数据计算锤头位移。在设计过程中，首先采用有限元软件对该方案进行仿真研究，通过分析凹槽刻度标尺表面磁场特征，确立了方案的可行性；其次，采用金属板材加工凹槽刻度标尺进行实验，建立位移测量数学模型。实验结果表明，该方案可行且具有较高的测量精度。

For the characteristics of strong vibration, high temperature and dust in the forging scene, a kind of displacement measurement system based on eddy current displacement sensor was designed to solve the problems of forging size online monitoring. The pluralities of equidistant grooves were processed as scale in vertical direction on the hammerhead side and eddy current sensor probe was installed on the groove position in the frame. The hammerhead displacement was calculated by output voltage signal in the process of hammerhead movement. Using Ansoft Maxwell to simulate the program, the feasibility of the program was established by the characteristic of magnetic field on the surface of groove scale. The mathematical model of displacement measurement was established through experiments on the processed metal plate. Experimental results show that the program is feasible and the accurate position measurement can be realized in this system.

基金项目：

江苏省科技支撑项目（BE2011112）;中国博士后基金项目（2012M521009）

廖志凌（1971－），男，博士，副教授

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