Damper based vehicle yaw control
US6505108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Sep 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2800/922
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Controllable dampers are used to improve vehicle responses and stability during severe vehicle handling maneuvers. A total handling damping value for the vehicle is derived, preferably from the greatest of a yaw rate error value, a lateral acceleration value and a time derivative of lateral acceleration value. In addition, a control ratio of front axle roll damping to total roll damping is derived, preferably from the yaw rate error value, an oversteer/understeer indication and possibly vehicle speed. From these values, handling damping values are derived for each wheel of the vehicle and blended with damping values for the same wheels derived from suspension component movement to determine a corner damping command for each controllable damper. Preferably, the damping values derived from suspension component movement are shifted away from damping control of the vehicle body toward handling damping control when yaw rate error is large in magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.