| 摘要 |
PURPOSE:To prevent the generation of a counter torque, by a method wherein the energization of an exciting coil is started when the salient-pole of a rotor, generating an effective output torque, has started invasion onto the magnetic pole of a fixed armature and the energization is stopped when the rotor has rotated by 90 deg.. CONSTITUTION:A 2-phase reactance type motor is constituted of the salientpole 1a of a rotor 1, the electrodes 2a-6b of a fixed armature 2, exciting coils 3c-6d and the like while the salient-pole 1a as well as the magnetic pole of the fixed armature 2 are provided with the width of 180 deg. and are arranged with an equal pitch. Six salient-poles and eight magnetic poles are arranged. A high voltage AC power source, coping with the output torque and rotating speed of a motor, is employed and a position detecting signal, used for exciting the magnetic poles of respective phases and having a conduction angle of 90 deg. in electric angle, is outputted and the conduction of the exciting coils 3c-6d is effected during the width of this signal. A transistor 25 and a diode 24 are inserted into both terminals of respective coils and the magnetic energy of the coil is circulated to the next exciting coil through the diode 24 when the transistor 25 is not conductive. |
