Abstract
A diagnostic system is one of the key components securing the safety of operation of a turbojet engine. There are many different engineering approaches how to design engine diagnostic systems applied in real-world conditions. We propose a novel approach for a diagnostic system design to be applied on the object of a small turbojet engine using thermal diagnostics combined with a more traditional model based approach. The combination of these two approaches together with application of methods from the area of computational intelligence create a hybrid diagnostic system, which can be integrated with a control system of the engine. The article also deals with experimental validation of the designed diagnostic system on the object of a small turbojet engine iSTC-21v in laboratory conditions.
Highlights
Turbojet engines can generally be considered as complex systems operating in a broad environmental external parameters’ range as well as under extreme internal thermodynamic conditions
Current trend in control of aircraft engines lays in the use of full authority digital engine control systems (FADEC)
The electronic engine control system usually consists of two control units; certification requirements may demand as much as three redundant channels
Summary
A diagnostic system is one of the key components securing the safety of operation of a turbojet engine. We propose a novel approach for a diagnostic system design to be applied on the object of a small turbojet engine using thermal diagnostics combined with a more traditional model based approach. The combination of these two approaches together with application of methods from the area of computational intelligence create a hybrid diagnostic system, which can be integrated with a control system of the engine. Predlažemo jedan novi pristup dizajnu dijagnostičkog sustava koji se ima primijeniti na objekt mali turbomlazni stroj, korištenjem termalne dijagnostike koja je kombinirana s pristupom koji je tradicionalniji. Članak također obrađuje eksperimentalno vrednovanje dizajniranog dijagnostičkog sustava na objektu mali turbomlazni stroj iSTC-21v u laboratorijskim uvjetima.
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