Providing assist torque without hand wheel torque sensor for zero to low vehicle speeds
US9409595B2 · kind B2 · utility
12Cited by
33References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of controlling an electric power steering system of a vehicle is provided. The method estimates steering rack force to be caused by a tire of the vehicle and a surface of a ground with which the tire is in contact in response to determining that one or more hand wheel torque sensors of the vehicle are not enabled. The method generates a steering assist torque command based on the estimated steering rack force. The method controls the electric power steering system using the steering assist torque command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.