Feedforward control of motor vehicle roll angle
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United States of America Patent
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-
Mar 10, 2009
Grant Date -
Oct 6, 2005
app pub date -
Dec 21, 2004
filing date -
Apr 1, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A technique for reducing excessive motor vehicle roll angle using a feedforward control comprises a number of steps. Initially, a steering angle and a speed of the-motor vehicle are determined. Next, a lateral acceleration of the vehicle is estimated based on the steering angle and the speed. Then, a lateral acceleration proportional and derivative (PD) term of the estimated lateral acceleration is determined and roll angle reduction is implemented when the lateral acceleration PD term exceeds a first threshold. The roll angle reduction may be achieved through application of a braking force to an outside front wheel of the vehicle. A magnitude of the braking force may be proportional to a difference between the lateral acceleration PD term and the first threshold.
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