Abstract
KEYWORDS－Electromagnetic brake, Air gap, Structural parameters, Optimization, Automatically adjust
ABSTRACT－A new electromagnetic brake with the temperature-compensation air gap width was studied in this paper,. The base for supporting coils is fixedly installed on the suspension by a temperature controlled deformable component. The thermal deformation of the iron core is offset by the thermal deformation of the component after the temperature rise. Temperature rise model, the air gap width model and the braking torque model of the electromagnetic brake were established in this paper. Electromagnetic brake structure parameters, the air gap width, the size of the iron core and the temperature controlled deformable component were optimized designed. The finite element model of the electromagnetic brake was set up in ANSYS, which was used to research the temperature changes of the electromagnetic brake in the long downhill and emergency braking conditions, for example. The simulation results show that: after increasing the air gap width self-adjusting structure, the air gap width of the electromagnetic brake was decreased to be 0. 6 mm, which causing electromagnetic brake torque increased significantly.