Characteristic analysis of a novel series magnetic path hybrid excitation linear eddy current brake

In this paper a novel series magnetic path hybrid excitation linear eddy current brake was presented. The eddy current brake using the hybrid excitation scheme has many advantages, such as controllability, energy saving, and large force density. The structure and working principle were introduced. The analytical model was found using the equivalent magnetic circuit method and the layer theory approach. The braking force characteristics was predicted using derived analytical model. A two-dimensional finite element analysis was employed to confirm the validity of the analytical model. Finally, the relationship among the force characteristics and the design parameters were analyzed to give useful information to the designer of the eddy current brake.