Methods and systems for estimating road surface friction coefficient using self aligning torque
US10272919B2 · kind B2 · utility
1Cited by
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15Claims
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Key dates
| Filing date | Oct 9, 2014 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Sep 6, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems for determining road surface information in a vehicle. In one embodiment, the method includes: determining at least one condition assessment value based on steering data; determining a feature set to include at least one of self-aligning torque (SAT), slip angle, SAT variance, steering rate, and lateral acceleration based on the condition assessment value; processing steering data obtained during a steering maneuver and associated with the feature set using a pattern classification technique; and determining a surface type based on the processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.