Determining wheel slippage on self driving vehicle
US10940851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2018 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/931
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The technology relates to determining the current state of friction that a vehicle's wheels have with the road surface. This may be done via active or passive testing or other monitoring while the vehicles operates in an autonomous mode. In response to detecting the loss of traction, the vehicle's control system is able to use the resultant information to select an appropriate braking level or braking strategy. This may be done for both immediate driving operations and planning future portions of an ongoing trip. For instance, the on-board system is able to evaluate appropriate conditions and situations for active testing or passive evaluation of traction through autonomous braking and/or acceleration operations. The on-board computer system may share slippage and other road condition information with nearby vehicles and with remote assistance, so that it may be employed with broader fleet planning operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.