Abstract:In order to improve the response time of electro-hydraulic proportional valve, a new structure of double putter electromagnet was present.According to the equivalent magnetic circuit, the mathematical model of the electromagnet was established, and the finite element analysis of the electromagnet was carried out by using Ansoft.The force & displacement response curves under different current density were fitted by fitting command.The variation law of force displacement characteristic of electromagnet under different current density was obtained. Using the data obtained, the ANSYS Workbench impacting model simulation was done.It is found after the putter impacts the baffle, the force concentrates in the center and part of the edge of the region;after longterm impact, the putter is likely to occur deformation. Flame correction method was used to repair the putter deformation.