US 2011/0035131 A1Published application

Speed control apparatus for vehicle

AssigneeAdvics Co., Ltd.

InventorsYoshiyuki Yasui, Hideaki Koto, Manabu Tanaka, Takayuki Miyajima

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Abstract

A plurality of position data sets representing a plurality of points on a road ahead of a vehicle are acquired, and the degree of curvature of the road at each point is computed. On the basis of the degree of curvature, a constant curvature degree section of a curve is identified, and the degree of curvature and the end position of the constant curvature degree section are determined. In order to cause the vehicle to properly pass through the curve, curve deceleration control is executed on the basis of the actual vehicle speed, a proper vehicle speed determined from the degree of curvature, and the end position of the constant curvature degree section. That is, the curve deceleration control is performed on the basis of the start point of a section of a curve having the maximum degree of curvature and the constant degree of curvature of that section.

Claims11

Dependent claims

A speed control apparatus for a vehicle comprising:

vehicle speed acquisition means for acquiring an actual speed of the vehicle;
vehicle position acquisition means for acquiring a position of the vehicle;
position data acquisition means for acquiring position data sets representing positions of a plurality of points on a road located ahead of the vehicle traveling on the road;
curvature degree acquisition means for acquiring a degree of curvature of the road at each of the points;
constant curvature degree section identification means for identifying a constant curvature degree section whose degree of curvature is constant on the basis of the plurality of position data sets and the degree of curvature at each point;
constant curvature degree acquisition means for acquiring a constant degree of curvature of the constant curvature degree section;
end position determination means for determining positions of end points of the constant curvature degree section;
and
control means for executing vehicle speed control, which controls the speed of the vehicle, on the basis of the actual speed of the vehicle, the position of the vehicle, the constant degree of curvature of the constant curvature degree section corresponding to a curve section of the road, and the position of an end point of the constant curvature degree section corresponding to the curve section.

6 more elements

Dependencies are inferred from the claim text.