In this paper , the method of dividing circle rotating magnetic field into polygonal step magnetic field and the step orientation characteristic of space rotating vectors are researched 本文研究了由圆形旋转磁场离散为多边形步进磁场的离散方法和空间旋转矢量的步进定位特性。
Auto generator claw pole : the auto generator claw pole is the important constituent part of the auto alternator and is the major component which is used to form the rotating magnetic field 汽车发电机爪极:汽车发电机爪极是汽车交流发电机的重要组成部件,它是用来形成旋转磁场的主要元件。
By september 1887 tesla discovered that he could produce a rotating magnetic field by feeding two separate alternating currents into pairs of coils set on opposite sides of the stator [ see illustration on page 80 ] 到了1887年,特士拉发现,他可以将两道分开的交流电导入附在定子两侧的一对线圈,产生转动的磁场(见100页插图) 。
If balanced three - phase current flow through these three - phase distributed windings , a rotating magnetic field of constant amplitude and speed will be produced in the air gap and will induce current in the rotor circuit to produce torque 如果平衡型三相电流流经这三相分布式绕组,将在气隙中产生振幅及速度稳定的旋转磁场,并会诱发电流在转子回路产生转矩。
Then introduce berry ' s work of finding phase factors including quantum phase factors accompanying adiabatic changes , on the base of this , discuss berry phase factors of spinl / 2 particle in rotating magnetic field 本文接着介绍了berry1984年发现几何相因子的工作,内容包括从量子绝热定理推导berry几何相因子。在此基础上,把旋转磁场中自旋1 2系统作为研究对象,对其几何相位的变化特点进行了讨论。
A rotating magnetic field is a magnetic field that has a moving polarity in which its opposite poles rotate about a central point or axis. Ideally the rotation changes direction at a constant angular rate.