| 主权项 |
1. A method for determining range of a vehicle to follow along a projected route comprising:
within a computerized apparatus,
obtaining information concerning an estimated range, Dmax, for the vehicle;determining a route to a destination along roads available to be followed by the vehicle;dividing the route into a number, N, of road segments;for each such road segment, k, being followed by the vehicle,
determining whether the respective road segment is of a certain type of road segment; andadding a factor to a running sum based on both the type of road segment and an energy spent to travel along the road segment, wherein energy spent to travel along each such road segment, k, is taken from∑kn≤Nαkdk=Dmaxwheredk=skcos(θk) is a projection of the k-th segment sk on a ground reference; andαk=1(1+Γ)(1+Δ)[(μkμave)+(tan(θk)μave)+Γsec(θk)(vkvave)2+Δ(1+Γ)sec(θk)(Gk+HkGave+Have)] is a coefficient that weighs contributions for one or more current conditions that depend on one or more aspects of road slope angle θk, rolling resistance μk, velocity vk, driver behavior Gk, and accessory energy Hk for each road segment, k, relative to one or more aspects of measured values including a ratio of aerodynamic force to rolling resistance force Γ, and other forces including effective vehicle accessory forces Δ, average rolling resistance μave, average velocity vave, average driver behavior Gave, and average accessory energy Have; andadjusting the estimated range based on the running sum, to determine a location along the route where a remaining energy available for the vehicle to follow the route will reach a predetermined level; and on a display device located in the vehicle,
displaying a representation of result of adjusting the estimated range. |
