Title:
ELECTRONIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018182798
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To accurately detect a current flowing a motor driven by an H bridge circuit.SOLUTION: A motor driver device 1 includes an H bridge circuit 3 for driving a motor 2 equipped on a vehicle, a current detection circuits 4 and 5, and a drive control unit 6. The current detection circuit 4 detects a current, flowing the path from a node N1 of the H bridge circuit 3 to a terminal M1 of the motor 2, and outputs a current detection signal Sa corresponding to the current. The current detection circuit 5 detects a current, flowing the path from the other node N2 of the H bridge circuit 3 to a terminal M2 of the motor 2, and outputs a current detection signal Sb corresponding to the current. The drive control unit 6 detects a current flowing the motor 2 based on the current detection signals Sa and Sb, controls the operation of the H bridge circuit 3 based on the detected current value, and controls electric conduction from a power line Lb to the motor 2.SELECTED DRAWING: Figure 1
Inventors:
HAKAMADA RYOMA
FUKUHARA KOHEI
FUKUHARA KOHEI
Application Number:
JP2017074432A
Publication Date:
November 15, 2018
Filing Date:
April 04, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02P7/06
Domestic Patent References:
| JPH0288362A | 1990-03-28 | |||
| JP2000018069A | 2000-01-18 | |||
| JP2011023802A | 2011-02-03 | |||
| JPH0520976U | 1993-03-19 | |||
| JPH03112472U | 1991-11-18 | |||
| JPH1075598A | 1998-03-17 |
Foreign References:
| US20120326704A1 | 2012-12-27 |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office