Nidec Corporation

Naoyuki Kanamori

Keizo Furukawa

Hideyuki Takemoto

Tadayuki Kanatani

The identification method according to an embodiment is used for an identification device for identifying the type of a brushless DC motor. A brushless DC motor includes an output terminal for outputting a signal. The output terminal is able to output a signal obtained by superimposing signal types. The signal resulting from the superimposition is different depending on the types of brushless DC motors. In the identification method, power is supplied to a brushless DC motor, and the signal resulting from the superimposition that is output from the output terminal of the brushless DC motor is input to an identification device. The signal resulting from the superimposition is separated into signal types, and the separated signals are used to identify the type of the brushless DC motor.

Brushless DC motor having drive circuit generating superimposed signal

A motor includes a stator that includes an annular core back, teeth extending radially outside from the core back and being arranged in a circumferential direction, an insulator covering at least a portion of the teeth, and a coil defined by a conductive wire wound around each of the teeth via the insulator. A radially inside surface of the core back includes core back protrusions extending radially inside and provided with a space therebetween in the circumferential direction. The insulator includes an annular upper lid portion extending radially inside farther than a radially inside surface of the core back at an axially upper side of the core back and a side wall portion extending to an axially lower side from a lower surface of the upper lid portion. At least a portion of the side wall portion is disposed within the space between the adjacent core back protrusions.

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Kyoto, Japan

Naoyuki Kanamori