Permanent magnet rotor and dynamo-electric machine, such as a brushless motor.

摘要

The present invention relates to a permanent magnet rotor fitted with a position indication. It also relates to a dynamo-electric machine such as a brushless motor thus equipped. According to the invention, one of the radial edges of the rotor carries an indentation (6-1 - 6-4) materially integral with the magnetized zones (5-1 - 5-4) of the rotor, the indentations passing in front of a fixed sensor whose output signal detects the instantaneous angular position of the rotor with respect to the alternations of the magnetic polarities. Application to the motor with electronic commutation. <IMAGE>