Purposeful brake-induced wheel lockup for vehicle stability control in autonomous vehicles
US11752989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2021 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Nov 23, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2720/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Systems and Methods for controlling an autonomous vehicle, may include: receiving sensor data, the sensor data comprising vehicle parameter information for the autonomous vehicle; using the sensor data to determine a vehicle state for the autonomous vehicle, wherein the vehicle state comprises information regarding a magnitude of an actual or predicted effective understeer gradient for the vehicle; computing a yaw moment required to correct the effective understeer gradient based on the magnitude of the effective understeer gradient; and determining a combination of one or more vehicle control inputs, including applying a brake torque, to correct the effective understeer gradient; applying the brake torque to a single wheel of the vehicle, wherein an amount of brake torque applied is sufficient to lock up the single wheel to create a yaw moment on the vehicle to achieve the computed yaw moment required to correct the effective understeer gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.