使退磁

The relation between winding demagnetization and rotor position detection of sensorless BLDC motor control is discussed in this paper.

本文阐述了无位置传感器直流无刷电机控制中退磁与转子位置检测的关系，通过对退磁过程的分析，提出了通过PWM配置使断电绕组具有最大反向电压的加速退磁方法。

The magnetism dipole theory was used to analyze the demagnetization field of the component, and computer simulation was processed with software Matlab.

采用磁偶极子理论对该零件的退磁场分布进行了分析，应用Matlab软件进行了计算机仿真，通过仿真使零件各关键部位的退磁场分布得到直观显现。

The magnetic stripe of the drum demagnetization on a drum on latent image to demagnetization treated so that it does not take magnetic, in preparation for the next page of the business card printing and membership card production

磁鼓退磁磁条（对磁鼓上的磁化潜影进行退磁处理，使之不带磁性，以准备下一页的制卡和会员卡制作

Rotor loss reduces the power efficiency and demagnetizes the magnets.

转子涡流损耗使电机的效率下降并能引起转子永磁体的退磁。

When demagnetization is controlled by nucleation, the effective demagnetization factor in coercivity model will be reduced with addition of Sn. But, in the same time, harmness of imperfects on surface of grain to coercivity will be increased.

在形核控制情形下，掺杂Sn能明显减小矫顽力表达式中的有效退磁因子N〓，但也使晶粒表面缺陷项对矫顽力的危害增大。

Exceptional circumstances arise in the magnetic coupling slip, the sleeve will be in the rapid growth of the eddy heat, the temperature rose sharply, if not in time, will cause magnet demagnetization, so that magnetic coupling failure.

特殊情况下在磁力联轴器出现滑脱时，隔套中的涡流热量会急剧增长，温度急剧上升，如不及时处理，会引起磁钢退磁，使磁力联轴器失效。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。