Operation Point Dependent Diagnosis - WAI
| Autor: | Sebastian Clever, Marco Münchhof |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Engineering
Class (computer programming) business.industry ComputerApplications_COMPUTERSINOTHERSYSTEMS Control engineering General Medicine Fault (power engineering) Fault detection and isolation Operation point Reliability engineering Knowledge-based systems Range (statistics) Fault model business System structure |
| Zdroj: | IFAC Proceedings Volumes. 42:1085-1090 |
| ISSN: | 1474-6670 |
| DOI: | 10.3182/20090630-4-es-2003.00179 |
| Popis: | As fault detection is becoming increasingly relevant for modern passenger car Diesel engines, it is now time to take a closer look at the engine specific fault diagnosis problems. Many of the applied fault detection algorithms can only be computed in certain operation ranges of the engine. Whenever the engine is operated outside these ranges, the corresponding symptoms are usually not actualized. As a matter of course this has to be considered in the design of a diagnosis system. However, since there are many well-developed diagnosis system structures, a method for the consideration of operation ranges should not impact on them. Hence, the diagnosis system structures are kept interchangeable and can be chosen from the available systems independently. The paper at hand focuses on the prevention of false alarms by considering operation ranges in a certain class of well-known diagnosis algorithms. For this purpose special symptoms and artificial fault measures are introduced. It can be shown that operation range dependent false alarms will no longer occur, if the diagnosis system is constructed using the new symptoms and fault measures. Since only new symptoms and fault measures are introduced, the choice of the diagnosis system structure can remain independent from the consideration of the operation ranges. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|