Electric power steering apparatus having overload protection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 12, 1994
Grant Date -
N/A
app pub date -
Jul 8, 1992
filing date -
Jul 10, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an electric power steering apparatus which assists a steering power by an electric motor, the difference between currents flowing into and flowing out from the electric motor is obtained, and an abnormality of the electric motor due to a ground fault is detected on the basis of this difference. When a state in which this difference is greater than a given value has continued for a predetermined period of time, the abnormality of the electric motor is detected. Upon the detection of the abnormality of the electric motor, a relay contact of a fail-safe relay circuit is made off so that the supply of electric power from a main power supply to the electric motor is cut off, thereby inhibiting the electric motor from assisting the steering power.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully