Modeling of A Linear and Rotary Permanent Magnet Actuator

In this paper, we propose to study an electromagnetic actuator which involves linear and/or rotary movements. The studied device is constituted of permanent magnets, iron teethed armature and concentrated coils with a simplified design. The aim of this paper is to study the main electromagnetic features of the actuator using 3D finite element method (FEM). First, the actuator is described and the design choices are given and discussed. Then, the electric and magnetic behaviors (fluxes, forces, etc.) are studied thanks to 3D-FEM analyses. Results are given and compared to measurements.