Method and system for diagnostics of apparatus
US8121818B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2008 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Mar 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0281
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Proposed is a method, implemented in software, for estimating fault state of an apparatus outfitted with sensors. At each execution period the method processes sensor data from the apparatus to obtain a set of parity parameters, which are further used for estimating fault state. The estimation method formulates a convex optimization problem for each fault hypothesis and employs a convex solver to compute fault parameter estimates and fault likelihoods for each fault hypothesis. The highest likelihoods and corresponding parameter estimates are transmitted to a display device or an automated decision and control system. The obtained accurate estimate of fault state can be used to improve safety, performance, or maintenance processes for the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.