Title:
A motor drive controller and the motor drive control method
Document Type and Number:
Japanese Patent JP6272798
Kind Code:
B2
Abstract:
A controller of a motor controller operates to perform a process including: controlling the H bridge circuit to switch to the charge mode; controlling the H bridge circuit to switch to the high-dissipation mode when the zero-cross detector detects that the back electromotive force voltage of the motor coil connected to a phase of the H bridge circuit shortly before the H bridge circuit is zero-crossed; controlling the H bridge circuit to switch to the low-dissipation mode after a predetermined time has elapsed; and controlling the H bridge circuit to switch to the free mode when the motor current detector detects that the motor current flowing in the motor coil connected to the H bridge circuit flows in a direction opposite to that in the charge mode.
Inventors:
Hidetoshi Hijikata
Application Number:
JP2015114666A
Publication Date:
January 31, 2018
Filing Date:
June 05, 2015
Export Citation:
Assignee:
MinebeaMitsumi Co., Ltd.
International Classes:
H02P8/16
Domestic Patent References:
| JP2004274880A | ||||
| JP2010178477A | ||||
| JP2009159715A |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office
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