| Title of Invention | METHOD FOR ASSESSING THE RELIABILITY OF TECHNICAL SYSTEMS |
|---|---|
| Abstract | The present invention relates to a method for quantitative estimation of the reliability of a technical system, which is useful, in particular, for complex systems with a multiplicity of components. First, second and third failure rates are distinguished for the system components. In accordance with the invention an upper, lower and, if appropriate, mean value are in each case estimated for the largely unknown second failure rates by subjective expert opinion, and all upper, lower and, if appropriate, mean estimates are used separately to calculate an optimistic and pessimistic limiting probability distribution (2, 3) and, if appropriate, a mean probability distribution (1) of the system reliability. Systematic correlations between expert estimates are thereby taken into account. For the first failure rates, mean values obtained from operational experience are determined with a confidence interval, and widened Poisson distributions are calculated. Furthermore, it is possible to add to the overall probality of the system reliability the Poisson distributions of third types of fault whose failure rates are known a priorior with a high statistical reliability. The method is suitable, in particular, for use in connection with FMEA ("Failure/Fault Modes and Effects Analysis") tables (4) and FMECA ("Failure/Fault Modes, Effects and Criticality Analysis") tables (4). |
| Full Text |
|---|
186-mas-2000 claims granted.pdf
186-mas-2000 correspondence others.pdf
186-mas-2000 correspondence po.pdf
186-mas-2000 description (complete) granted.pdf
186-mas-2000 power of attorney.pdf
| Patent Number | 235288 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Indian Patent Application Number | 186/MAS/2000 | ||||||||
| PG Journal Number | 29/2009 | ||||||||
| Publication Date | 17-Jul-2009 | ||||||||
| Grant Date | 30-Jun-2009 | ||||||||
| Date of Filing | 07-Mar-2000 | ||||||||
| Name of Patentee | ABB RESEARCH LTD., | ||||||||
| Applicant Address | AFFOLTERNSTRASSE 52, CH 8050 ZURICH | ||||||||
Inventors:
|
|||||||||
| PCT International Classification Number | G06F19/00 | ||||||||
| PCT International Application Number | N/A | ||||||||
| PCT International Filing date | |||||||||
PCT Conventions:
|
|||||||||