Relating to electrical power assisted steering systems
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United States of America Patent
Stats
-
Oct 28, 2003
Grant Date -
Jul 17, 2003
app pub date -
Feb 19, 2003
filing date -
Jun 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric power assisted steering system is disclosed in which a torque demand signal (8) is generated and applied to an electric motor (1) operatively connected to a steering mechanism (5) in order to assist a driver of the vehicle when steering the vehicle. The torque demand signal (8) includes a damping component that is dependent upon a measurement of torque T carried by the steering mechanism and a measurement of the angular velocity .omega. of the steering mechanism. The torque produced by the motor (1) is not obtrusive during 'hands-on' manoeuvers but provides enhanced damping in other manoeuvers such as a steering flick.
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Family
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