Estimation apparatus for water film thickness on road surface
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKazuma Tokuda, Naoki Morita, Yusuke Maeda
Life of this patent
Estimating the term…
Abstract
An estimation apparatus for a water film thickness on a road surface includes a data acquisition unit and an estimation unit. The data acquisition unit sequentially acquires a data set including driving force data representing a driving force output from a driving source of a vehicle and acceleration data representing a longitudinal acceleration of the vehicle, while the vehicle is traveling. The estimation unit estimates a thickness of a water film on a road surface on which the vehicle travels, based on a relationship between a speed of the vehicle and a fluid resistance that the vehicle receives from the water film, the flow resistance being calculated based on the data set.
Claims15
An estimation apparatus for a water film thickness on a road surface, the apparatus comprising:
- a data acquisition unit that sequentially acquires a data set including driving force data representing a driving force output from a driving source of a vehicle and acceleration data representing a longitudinal acceleration of the vehicle, while the vehicle is traveling:
- an estimation unit that estimates a thickness of a water film on a road surface on which the vehicle travels, based on the data set,
- wherein the estimation unit estimates the thickness of the water film based on a relationship between a speed of the vehicle and a fluid resistance that the vehicle receives from the water film, the flow resistance being calculated based on the data set.
A water film thickness estimation method executed by one or a plurality of computers, the method comprising:
- sequentially acquiring a data set including driving force data representing a driving force output from a driving source of a vehicle and acceleration data representing a longitudinal acceleration of the vehicle, while the vehicle is traveling;
- and
- estimating a thickness of a water film on a road surface on which the vehicle travels, based on the data set,
- wherein the estimating includes calculating a fluid resistance that the vehicle receives from the water film based on the data set, and estimating the thickness of the water film based on a relationship between the calculated fluid resistance and a speed of the vehicle.
A non-transitory computer-readable medium storing a program for estimating a water film thickness, the program causing one or a plurality of computers to execute:
- sequentially acquiring a data set including driving force data representing a driving force output from a driving source of a vehicle and acceleration data representing a longitudinal acceleration of the vehicle, while the vehicle is traveling;
- and
- estimating a thickness of a water film on a road surface on which the vehicle travels, based on the data set,
- wherein the estimating includes calculating a fluid resistance that the vehicle receives from the water film based on the data set, and estimating the thickness of the water film based on a relationship between the calculated fluid resistance and a speed of the vehicle.
Dependencies are inferred from the claim text.