Method for operating an electrical power steering mechanism
US9221492B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/165
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer and function architecture for operating an electrical power-assisted steering system, comprises a control path and a monitoring path that has a diverse design in relation thereto and which are processed basically parallel to each other in each case on two associated cores of a redundant microcomputer, and arithmetic differences that occur within the control path or the monitoring path are detected at the functional level by way of a comparator, and the results of individual computing steps are detected at the granular level by way of a core comparator, and as a result of a detected difference of the comparator at the functional level, a transition is made into an emergency operating mode in the event that the core comparator has not diagnosed an arithmetic error, so as to ensure further availability of at least some of the steering assistance function or of the steering functions over at least a certain time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.