SYNCHRONOUS SERVO MOTOR WITH PERMANENT MAGNETS AND VARIABLE RELUCTANCE

摘要

The invention relates to a rotary synchronous servo motor with applications in performing rotary motions in machine tools, packaging machines, robots, positioning systems, servo drives, etc. According to the invention, the servo motor comprises a rotor (1) consisting of a ferromagnetic cylinder (8) made of electrotechnical steel sheets and a stator (2) inside the rotor (1), on each half pole of the rotor (1) there being three notches (9, 10 and 11) wherein a plurality of paralellepipedal permanent magnets (12, 13, 14, 15 and 16) are inserted where, in the first notch (9) the first two magnets (12, 13) are inserted, in the second notch (10) the next two magnets (14, 15) are inserted and in the third notch (11) the last magnet (16) is inserted, a part of the magnets (12, 14, and 16) having the magnetization direction perpendicular on an axis (q), and another part of the magnets (13, 15) having a magnetization direction parallel with another axis (d).