Steering angle detection by means of ESC and EPAS
US8515621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/0235
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for detecting a steering wheel position of a motor vehicle which has an evaluation unit and a servo-assisted steering device, a position sensor being assigned to the servo-assisted steering device. After loss of an on-board power system voltage, the servo-assisted steering device conducts a steering angle value which is absolute at least in one circular segment to the evaluation unit. The evaluation unit detects an absolute steering angle position which is transmitted to the servo-assisted steering device which accepts the absolute value obtained from the evaluation unit. The servo-assisted steering device continues to monitor the absolute steering angle even when the ignition is switched off, and it conducts the current value to the evaluation unit in the switched-on state of the motor vehicle so that the evaluation unit checks the plausibility of the value obtained from the servo-assisted steering device and conducts it back to the servo-assisted steering device which accepts the obtained value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.