Application of electro-permanent magnet systerm in steel plate loading/unloading

Based on the comparison of the characteristics between electro-permanent magnet system and normal electro magnet system,and according to the analysis of the application of electro-permanent magnet system in the pratical engineering,the this paper draws the conclasion that the electro-permanent magnet system possesses obvious technical advantages in the loading/unloading field of wharf.