Apparatus and method for driving a brushless motor

Details Apparatus and method for driving a brushless motor Apparatus and method for driving a brushless motor

2006-07-25

2006-07-25

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C123S361000

Reexamination Certificate

active

07081726

ABSTRACT:
A drive system for a brushless motor. The brushless motor includes a rotor having opposite magnetic poles on its periphery, and a stator facing the rotor. The stator has, for example, three interconnected coils at equal angular intervals. The drive system includes a memory for storing drive data which represent drive currents supplied to the respective coils at each angular position of the rotor. The drive system also includes a controller for reading those drive data which best match a target angular position of the rotor, from the memory. The controller generates drive signals based on the drive data. The drive system also includes a drive circuit for supplying the drive currents to the respective coils, based on the drive signals, respectively. The drive system can precisely control the angular position of the brushless motor.

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Patent Abstract of Japan, vol. 1997, No. 01, Jan. 31, 1997 & JP 08-242596A, Sep. 17, 1996.

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