Determining friction coefficient of a tire/surface interface
US10988142B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 3, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2200/91
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling a vehicle includes applying torque to a set of tires to cause the vehicle to move along a surface, reducing an amount of downward force applied to the surface by a first tire from the set of tires using an active suspension component, and actuating the first tire to control the dynamic response of the first tire relative to the surface. The method also includes determining a traction force of the first tire relative to the surface at each of multiple values for the dynamic response of the first tire relative to the surface, and determining a maximum available traction force based on the multiple values of the dynamic response and the corresponding values for the traction force. The method also includes determining a friction parameter based on the maximum available traction force, and controlling an operation of the vehicle based on the friction parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.