Handwheel damping control of active steering system
US7546191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | May 6, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An active front steering (AFS) system that provides hand-wheel damping. The AFS system includes a damping control sub-system that determines a hand-wheel angular velocity based on the rate of change of a hand-wheel angle signal. The damping control sub-system determines the damping control signal by multiplying the angular velocity of the hand-wheel angle signal with a control gain. The damping control signal is added to a steering signal from a variable gear ratio control sub-system to generate a steering command signal. The damping control sub-system sets to the damping control signal to zero if a signal from a vehicle stability enhancement sub-system is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.