Title:
電子制御装置及びそれを搭載した電動パワーステアリング装置
Document Type and Number:
Japanese Patent JP6547857
Kind Code:
B2
Abstract:
[Problem] An object of the present invention is to provide an electronic control unit, without an increase in cost, diagnoses a short failure of an inverter FETs by means of an FET-short detecting section, appropriately deals with a diagnosis result, and has a function to diagnose whether the failure of the FET-short detecting section is occurred or not, and an electric power steering apparatus equipped with the electronic control unit. [Means for solving the problem] The present invention is the electronic control unit that driving-controls a motor by means of an inverter which comprises a bridge having an upper-stage FETs and a lower-stage FETs via an MCU, comprising: an FET-short detecting section to detect a short failure of the upper-stage FETs and the lower-stage FETs based on respective connection point voltages of the upper-stage FETs and the lower-stage FETs; and a detecting-section-failure diagnostic function to detect a failure of the FET-short detecting section, wherein the detecting-section-failure diagnostic function diagnoses the failure of the FET-short detecting section at start up and turns-OFF the upper-stage FETs and the lower-stage FETs when the failure of the FET-short detecting section is detected, and wherein the FET-short detecting section diagnoses the short failure of the upper-stage FETs and the lower-stage FETs when the failure of the FET-short detecting section is not detected.
Inventors:
Kumagai gentleman
Nobuhiko Ando
Uryu Kyomasa
Nobuhiko Ando
Uryu Kyomasa
Application Number:
JP2018001823A
Publication Date:
July 24, 2019
Filing Date:
January 10, 2018
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
H02P6/12; B62D5/04; B62D6/00; H02P27/08; H02P29/024
Domestic Patent References:
| JP2006160030A | ||||
| JP10221395A |
Foreign References:
| WO2017030020A1 |
Attorney, Agent or Firm:
Yuzo Agata