Permanent-magnet linear synchronous motor

摘要

A synchronous permanent magnet linear motor (8) comprising an armature (76) formed by: --a pack of ferromagnetic laminations forming a yoke (1) and a plurality of teeth (25) situated between two end teeth (78 and 80); --a plurality of coils disposed in said slots so that each of them surrounds at least one of said teeth (25); --an inductor (61) disposed facing the armature and comprising a plurality of permanent magnets (8) arranged in a regular manner with a pole pitch &tgr;p and defining a general plane (82). The end teeth (78 and 80) are also formed by said pack of ferromagnetic laminations and they have a profile formed of a first segment (84) defining a substantially constant air-gap with the general plane (82) and a second segment (86) defining an air-gap which increases in the direction moving away from the central part (90) of the armature. The laminations of said pack of laminations have essentially identical profiles.