System and method of vehicle speed control having vehicle speed limit control and speed increase rate control
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United States of America Patent
Stats
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Aug 26, 2014
Grant Date -
Apr 22, 2010
app pub date -
Apr 23, 2008
filing date -
Apr 27, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control.
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