Title:
モータ制御回路、モータシステム、モータ制御方法
Document Type and Number:
Japanese Patent JP5016674
Kind Code:
B2
Abstract:
In a motor control circuit which controls energization of a coil on the basis of a detection result of a rotor position, the control is performed so that the continuous rotation of the rotor due to its own inertia is suppressed and stopped in a short time, and that the reverse rotation of the rotor is prevented. When an external control signal CTL is changed from L to H, the normal rotation control is switched to reverse rotation control, so that a reverse brake state is effected. When motor rotation speed is monitored and reduced to a set rotation speed, a brake control signal SPSB is changed from L to H, so that a short brake state is effected. However, the motor continues to be rotated by its own inertia, and a position detection signal HALL is changed. Thus, reverse brake control is temporarily performed (only during a time period corresponding to a pulse width T RB ). The short pulse reverse brake control is intermittently performed until the motor is completely stopped. Therefore, it is possible to stop the motor in a shorter time as compared with the case where the motor is stopped only by the short brake control after the motor is decelerated to a rotation speed immediately before being stopped.
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Inventors:
Takashi Fukushima
Application Number:
JP2009529466A
Publication Date:
September 05, 2012
Filing Date:
February 19, 2009
Export Citation:
Assignee:
Asahi Kasei Electronics Co., Ltd.
International Classes:
H02P3/10; H02P3/12
Domestic Patent References:
| JP2008022678A | 2008-01-31 | |||
| JP2003189651A | 2003-07-04 | |||
| JP2007068400A | 2007-03-15 |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Hide Tanaka Tetsu
Yoshiaki Naito
Hide Tanaka Tetsu