Title:
車載制御装置
Document Type and Number:
Japanese Patent JP7379705
Kind Code:
B2
Abstract:
A vehicle-mounted control device is provided which makes it possible to avoid increases in size and which can diagnose the accuracy of a current detector in a timely manner. This vehicle-mounted control device 100 is provided with a microcomputer 110 having a diagnostic unit 200. The diagnostic unit 200 has: an output circuit DUTY calculation unit 210 which calculates the output DUTY of a drive circuit 130 on the basis of a signal outputted to the drive circuit 130; a current calculation unit 210 which calculates the target current value in a linear solenoid 60 on the basis of the output DUTY calculated by the output circuit DUTY calculation unit 210, the power supply voltage supplied from a battery 80 to the drive circuit 130, the ON resistance value of the drive circuit 130, and the load resistance value of the linear solenoid 60; and a comparison unit 230 which compares the target circuit value calculated by the current calculation unit 210 and the detected current value detected by a current detector 150.
Inventors:
Kentaro Jumonji
Application Number:
JP2022532281A
Publication Date:
November 14, 2023
Filing Date:
February 09, 2021
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
G01R31/00
Domestic Patent References:
| JP2016219569A | ||||
| JP526937A | ||||
| JP200368525A | ||||
| JP2006284463A | ||||
| JP2019158432A | ||||
| JP20215637A |
Foreign References:
| WO2016143465A1 | ||||
| US20100066097 | ||||
| US20180299499 | ||||
| US10443530 |
Attorney, Agent or Firm:
Patent Attorney Corporation Hiraki International Patent Office