Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/070062
Kind Code:
A1
Abstract:
This motor control device generates three-phase drive currents having different phases according to a combination of ON/OFF operations of a plurality of switching elements, and supplies the three-phase drive currents to three-phase coils of a brushless motor. The motor control device comprises: a drive circuit including a bridge circuit using the plurality of switching elements; and a control circuit which sets a control pulse for causing each of the plurality of switching elements to be turned ON/OFF. The control circuit includes a control pulse generation unit which generates a control pulse. The control circuit further includes a setting value holding unit which holds a setting value for the length of ON-time of a control pulse that is referred to when the control pulse generation unit generates the control pulse. The control circuit further includes a setting value changing unit which changes the setting value held by the setting value holding unit.
Inventors:
SUEHIRO YUKITO (JP)
Application Number:
PCT/JP2018/037415
Publication Date:
April 11, 2019
Filing Date:
October 05, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P27/08; H02P25/024
Foreign References:
| JP2015208203A | 2015-11-19 | |||
| JP2003079136A | 2003-03-14 |
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
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