Title:
電動パワーステアリング装置
Document Type and Number:
Japanese Patent JP4089367
Kind Code:
B2
Abstract:
An electric power steering apparatus for assisting the steering force of a steering member by an electric motor (18) driven by a driving circuit (13) connected to a power supply (P) by power connecting means (15a). The electric power steering apparatus comprising: means (12) for detecting a short-circuit failure on the driving circuit (13) and on a wiring connecting the driving circuit (13) and the electric motor (18); power off means (15) for turning off the power connecting means (15a) when a short circuit failure is detected; current detecting means (17) for detecting the value of a current flowing between the electric motor (18) and the driving circuit (13) after the power off means (15) turns off the power connecting means (15a); and current cutting means (Fa, Fb) for, when the current detecting means (17) detects a current value exceeding a predetermined value, irreversibly cutting off the current whose current value exceeds the predetermined. With such a configuration, it is possible to realize an electric power steering apparatus that has simple structures to enable a reduction in the cost of parts, and prevents the force required for steering from becoming too large at occurring of a short-circuit failure.
Inventors:
Yoshiya Koya
Yasushi Norito
Yasushi Norito
Application Number:
JP2002270595A
Publication Date:
May 28, 2008
Filing Date:
September 17, 2002
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
B62D6/00; B62D5/04; H02H7/08; H02H7/085; H02P29/02; H02P29/40; B62D101/00; B62D119/00
Domestic Patent References:
| JP52023611A | ||||
| JP63168161U | ||||
| JP1264546A | ||||
| JP3078432A | ||||
| JP7274580A | ||||
| JP10243687A |
Attorney, Agent or Firm:
Nobuo Kono