Vehicle steering apparatus and method for controlling the same
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United States of America Patent
Stats
-
Oct 31, 2006
Grant Date -
Sep 30, 2004
app pub date -
Mar 9, 2004
filing date -
Mar 27, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A steer-by-wire steering apparatus for a vehicle has a first control system including a first ECU, and a second control system including a second ECU. Each ECU responds to manipulation of the steering wheel by a driver, and controls a steering motor. The first ECU determines whether the second control system is malfunctioning, and the second ECU determines whether the first system is malfunctioning. When any of the system is malfunctioning, the ECU of normally functioning system controls a counter force motor such that steering wheel receives a counter force that is different from that when both systems are functioning normally. Accordingly, the steering apparatus is capable of speedily and reliably causing a driver to realize a malfunction in the steering apparatus.
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