Title:
ブラシレスモータの位相制御回路、ブラシレスモータおよびブラシレスモータの位相制御方法
Document Type and Number:
Japanese Patent JP5931273
Kind Code:
B2
Abstract:
A phase control circuit for a brushless motor includes a signal output unit that outputs M signals, whose phases differ from each other, in response to a change in the magnetic field resulting from the rotation of magnets placed in a rotor, and a control signal generator that generates two or more different kinds of group of phase control signals, based on at least the M signals, the group of phase control signals being used to control drive voltages, whose phases differ from each other, which are supplied to each phase of an N-phase coil (N being an integer greater than or equal to two). The control signal generator is configured such that a first phase control signal group and a second phase control signal group can be generated. Here, the first phase control signal group controls the drive voltages, which are supplied to each phase of the N-phase coil, in a first drive mode of the brushless motor. The second phase control signal group, whose phase differs from that of the first phase control signal group by a predetermined phase of ± degrees (±>0), controls the drive voltages, which are supplied to each phase of the N-phase coil, in a second drive mode of the brushless motor.
Inventors:
Naoto Miyauchi
Application Number:
JP2015502434A
Publication Date:
June 08, 2016
Filing Date:
August 15, 2014
Export Citation:
Assignee:
Mabuchi Motor Co., Ltd.
International Classes:
H02P6/08; H02K29/08
Domestic Patent References:
| JP2009268225A | 2009-11-12 | |||
| JP2012223065A | 2012-11-12 | |||
| JPH11215792A | 1999-08-06 | |||
| JP2012120338A | 2012-06-21 |
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Yusuke Murata
Tomoyuki Miki