A自动检测技术电涡流传感器.pptx

Chongqing University of Science&Technology 1/38大大 Chongqing University of Science&Technology 2/38 Chongqing University of Science&Technology 3/38电涡流：电涡流：当金属导体置于变化的磁场中时，导体表面就当金属导体置于变化的磁场中时，导体表面就会有感应电流产生，电流在金属体内自行闭合，这会有感应电流产生，电流在金属体内自行闭合，这种由电磁感应原理产生的旋涡状感应电流称为电涡种由电磁感应原理产生的旋涡状感应电流称为电涡流。流。这种现象称为电涡流效应。这种现象称为电涡流效应。电涡流传感器就是利用电涡流效应进行检测的。电涡流传感器就是利用电涡流效应进行检测的。Chongqing University of Science&Technology 4/38 Chongqing University of Science&Technology 5/38二、等效阻抗分析二、等效阻抗分析 Chongqing University of Science&Technology /38 Chongqing University of Science&Technology /38 Chongqing University of Science&Technology 8/38 Chongqing University of Science&Technology 9/38 Chongqing University of Science&Technology 10/38 Chongqing University of Science&Technology 11/38 Chongqing University of Science&Technology 12/38 Chongqing University of Science&Technology 13/38 Chongqing University of Science&Technology 14/38 Chongqing University of Science&Technology 15/38 Chongqing University of Science&Technology 1/38 Chongqing University of Science&Technology 1/38 Chongqing University of Science&Technology 18/38 Chongqing University of Science&Technology 19/38 Chongqing University of Science&Technology 20/38 Chongqing University of Science&Technology 21/38 Chongqing University of Science&Technology 22/38 Chongqing University of Science&Technology 23/38 Chongqing University of Science&Technology 24/38 Chongqing University of Science&Technology 25/38 Chongqing University of Science&Technology 2/38 Chongqing University of Science&Technology 2/38 Chongqing University of Science&Technology 28/38 Chongqing University of Science&Technology 29/38 Chongqing University of Science&Technology 30/38 Chongqing University of Science&Technology 31/38 Chongqing University of Science&Technology 32/38 Chongqing University of Science&Technology 33/38 Chongqing University of Science&Technology 34/38 Chongqing University of Science&Technology 35/38 Chongqing University of Science&Technology 3/38 Chongqing University of Science&Technology 3/38 Chongqing University of Science&Technology 38/38 Chongqing University of Science&Technology 39/38 Chongqing University of Science&Technology 40/38 Chongqing University of Science&Technology 41/38 Chongqing University of Science&Technology 42/38 Chongqing University of Science&Technology 43/38 Chongqing University of Science&Technology 44/38 Chongqing University of Science&Technology 45/38额定动作距离：在规定条件下测定到的接近开关的额定动作距离：在规定条件下测定到的接近开关的动作距离。动作距离。工作距离：接近开关在实际使用中北设定的安装距工作距离：接近开关在实际使用中北设定的安装距离。离。动作滞差：动作距离与复位距离之差的绝对值。动作滞差：动作距离与复位距离之差的绝对值。重复定位精度：表征多次测量动作距离。重复定位精度：表征多次测量动作距离。动作频率：每秒进入接近开关动作距离后又离开的动作频率：每秒进入接近开关动作距离后又离开的被测物个数（次数）。被测物个数（次数）。Chongqing University of Science&Technology 4/38 Chongqing University of Science&Technology 4/38 Chongqing University of Science&Technology 48/38 Chongqing University of Science&Technology 49/38小小 节节1、电涡流传感器工作原理（电涡流效应、集肤效应、电涡流传感器工作原理（电涡流效应、集肤效应、等效阻抗分析）等效阻抗分析）2、电涡流传感器结构及特性、电涡流传感器结构及特性3、电涡流传感器的测量转换电路（调幅式、调频式）、电涡流传感器的测量转换电路（调幅式、调频式）4、电涡流传感器的应用（位移测量、振动测量、转、电涡流传感器的应用（位移测量、振动测量、转速测量、安全检查门、表面探伤）速测量、安全检查门、表面探伤）5、接近开关及应用（概念、分类、性能指标、接线、接近开关及应用（概念、分类、性能指标、接线方式）方式）Chongqing University of Science&Technology 50/38下下 课课