Road surface friction coefficient estimating device and road surface friction coefficient estimating method
US8639412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | May 14, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A road surface friction coefficient estimating device includes a braking/driving force detecting section for detecting the braking/driving force of a wheel during traveling, a slip ratio detecting section for detecting the slip ratio of the wheel during traveling, and a road surface μ calculating section for estimating the relationship between the detected braking/driving force and the detected slip ratio on the basis of the ratio between the detected braking/driving force and the detected slip ratio, the correlation between the braking/driving force and the slip ratio in the case of the reference road surface, and at least either the detected braking/driving force or the detected slip ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.