| 摘要 |
PURPOSE:To reduce the size and to enhance the performance of a brushless motor by composing the motor of a stator having an armature winding and a detecting winding, and a projected rotor secured with a permanent magnet and controlling an inverter from a synchronous rectifier connected to the detecting winding. CONSTITUTION:A motor is formed of a stator 11 having an armature winding 112 on a core 111 and a detecting winding 113 as a rotary angle detector, and a rotor 12 of an unbalanced field structure with a permanent magnet as the same polarity pole 121a and the remaining different polarity pole 121b as a magnetic unit. An inverter 3 is controlled through an operating circuit 22 by a signal from a signal processor 21 having a high frequency power source 211 and a synchronous rectifier 212 for converting a signal from the winding 113 into a rectifying control signal to energize the winding 112. Accordingly, an exclusive rectifying sensor is used to enable preferable torque control in a wide range from steady time to a high speed. |
