Experiment Study on Spatial Magnetic Field of Large Gap Magnetic Drives System

On the basis of the working principle of the large gap magnetic drives system, the distribution principle of system’s spatial magnetic field under the 4 pole states of T78 electromagnet along the direction and the direction was measured. The experiment results were analyzed. The study results show that the permanent magnet can be placed in a more powerful magnetic field in its rotating period and could get large magnetic field’s coupling force by increasing the current properly, decreasing the coupling distance of magnetic pole between electromagnet and permanent magnet, and putting the permanent magnet into the ±5-10mm range of electromagnet.