Securing of a driving assistance function within a power steering
US10407096B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2015 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Mar 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of controlling a power steering system including at least one course control function, whereby a position setpoint is determined automatically according to a reference course that a vehicle is to be made to follow, then a motor setpoint applied to an assistance motor is adjusted accordingly, the method including a safety function which is distinct from the course control function and meets a higher ASIL safety level according to ISO-26262 standard, said safety function including a diagnostics subfunction according to which a control parameter such as the angular position of the steering wheel, the driver torque applied to the steering wheel, or the rate at which the steering wheel is turned is monitored in order to detect the onset of an alert situation considered to be hazardous, then an intervention subfunction according to which, if an alert situation is detected, the course control function is neutralized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.