磁探针不同绕制方式下的性能分析

Analysis on magnetic probe performance of different winding ways

利用比奥-萨伐尔定律和感应电动势原理,把电磁发射中的发射导轨和电枢简化为线电流下的直线导体,推导得到了磁探针线圈中心放置点的磁感强度。在假设线圈范围内的磁场为均匀磁场的前提下,计算得到了线圈垂直导轨放置时的磁通和感应电势,分析对比了在相同线长下平面螺旋型和圆柱螺旋型两种不同绕制方式下的磁探针性能,结果表明:二者在感应电压曲线没有本质区别,但漆包线的直径对平面螺旋绕制方式影响较大。

Based on Biot-Savart law and the principle of induction electromotive force, the magnetic intensity of the magnetic probe coil center position is deduced by simplifying the launching rails and armature as straight conductor with line current. Under the assumption that the magnetic field is a u- niform magnetic field, the electric potential of the coils is elaborated. Comparison result of the two winding ways with the same length shows that there is no different between cylindrical spiral and Ar- chimedes spiral on induced voltage, and the diameter of the enameled wire has a greater influence on the Arc：himedes spiral than the cylindrical spiral.