Online fault detection and avoidance framework for distributed factory control systems
US8010475B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An on-line fault detection and avoidance method is provided for industrial control systems that include multiple interacting process controllers. The method addresses the problem that not all faults can be determined and removed at the time of system design and testing. When a fault translates into a time-out condition in one or more controllers, symptoms are identified, persistence is measured, other involved controllers are identified, the fault condition is identified and control laws are reconfigured to avoid the fault condition in the future.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.