Apparatus for determining an estimated quantity of a state of motion of a vehicle
US5747682A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2050/0028
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle state estimating apparatus includes a slip-angle determining unit which determines a slip angle of a wheel of a vehicle. A friction-coefficient determining unit determines a friction coefficient between a tire of the wheel and a road. A tire characteristics unit generates a lateral force of the wheel from the slip angle and the friction coefficient based on predetermined tire characteristics. A vehicle-state estimating unit determines an estimated quantity of a state of motion of the vehicle based on the lateral force output by the tire characteristics unit. A vehicle-state observing unit detects an observed quantity for the estimated quantity determined by the vehicle-state estimating unit. A friction-coefficient correcting unit corrects the friction coefficient determined by the friction-coefficient determining unit, based on a difference between the observed quantity and the estimated quantity, so that the lateral force generated by the tire characteristics unit is corrected by the corrected friction coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.