Robust fault detection method
US6389338B1 · kind B1 · utility
12Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Aug 8, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/049
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method of discriminating faults in an error signal, such as that from a control input sensor, comprises a system for and method of determining allowable limits of an error signal versus time, passing the error signal through a low-pass filter, comparing output of the low-pass filter with a threshold and outputting a fault condition when the output of the low-pass filter exceeds the threshold. The time constant or constants of the low-pass filter and the threshold are selected so that a fault condition is detected when the error signal approaches the allowable limits before exceeding them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.