State of health monitoring and fault diagnosis for integrated vehicle stability system
US7133755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/413
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method for providing state of health monitoring and fault diagnostics for a vehicle stability system. The system includes at least one primary sensor and at least one secondary sensor for sensing the operation of at least one vehicle characteristic. The system calculates an estimated output of the primary sensor using at least one estimate model, and generates at least one residual as the difference between a measured output of the primary sensor and the estimated output of the estimate model. The system uses a residual pattern to determine if the primary sensor is faulty. The system compares the measured output of the primary sensor to a measured output of the secondary sensor if the residual is less than a threshold, and determines that the secondary sensor is faulty if the comparison between the measured outputs of the primary and secondary sensors is greater than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.