Methods and systems for compensating for common failures in fail operational systems
US9195232B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0055
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and systems for compensating for common failures in fail operational systems are described herein. An example system may include a primary controller configured to perform functions of a vehicle such as propulsion, braking and steering and a secondary controller configured in a redundant configuration with the primary controller. The controllers may perform cross-checks of each other and may each perform internal self-checks as well. Additionally, the system may include a control module configured to transfer control of the vehicle between the controllers based on detecting a fault. The control module may detect a common fault of the controllers that causes the control module to output a common fault signal. In response, the system may transfer of control to a safety controller configured to perform the vehicle functions until the system may transfer control back to the primary controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.