Patent ID: 8989913
Filing Date: 2015-03-24
Classification: B60W

Abstract:
1. A travel route estimation device comprising: a displacement velocity detection unit which detects a displacement velocity of one's own-vehicle over a travel route surface; a radius-of-curvature calculation unit which calculates, based on the displacement velocity, a plurality of radius of curvatures of a travel route of the own-vehicle; a filtering process unit which conducts a filtering process on radius of curvatures up to a radius of curvature preceding a latest estimated radius of curvature by a predetermined number, among the plurality of radius of curvatures calculated by the radius-of-curvature calculation unit, and outputs a first radius of curvature and a second radius of curvature which is a value obtained at a same point as the first radius of curvature and has a lower responsivity to a change in the radius of curvature of the travel route of the own-vehicle than the first radius of curvature; a weighted average unit which calculates, as a radius of curvature to be output to a safety apparatus of the own-vehicle, a third radius of curvature obtained by multiplying a first weight constant to the first radius of curvature and a second weight constant to the second radius of curvature and adding results of the multiplications, the first and second radius of curvatures being obtained at a same time point as a latest radius of curvature; and a weight constant control unit which performs