Road surface frictional coefficient estimation device, driving force distribution control device and four-wheel-drive vehicle
US8700280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Aug 1, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A road surface frictional coefficient estimation device includes: a first straight travel determination unit configured to determine whether or not a vehicle travels straight based on a rotational speed difference between a plurality of wheels of the vehicle; a second straight travel determination unit configured to determine whether or not the vehicle travels straight based on a steering angle of the vehicle; a selection unit configured to select one of determination results of the first straight travel determination unit and the second straight travel determination unit; and a frictional coefficient estimation unit configured to estimate a frictional coefficient of a road surface on which the vehicle travels when the one of the determination results selected by the selection unit indicates that the vehicle travels straight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.