旋转磁场强度测量方式研究

In order to accurately measure the rotating magnetic field strength, the finite element simulation software has been applied to build 3D electromagnetic field model. Error of two major methods about measuring magnetic fields H coils and Rogowski Chattock coil has been studied. A conclusion that measuring results using H coils are more accurate has been made and explained. Based on that, the relationship of test error with the distance between H coil and surface of sheet has been studied, and the results have been used to the experiments. The error of experimental measurement has been reduced finally.