Development of Turboshaft Engine Adaptive Dynamic Model: Analysis of Estimation Errors

• Autorzy: Yepifanov Sergiy , Bondarenko Oleksiy

Identyfikatory

DOI

10.2478/tar-2022-0024

• Języki publikacji: EN

Abstrakty

EN

One of the most perspective directions of aircraft engine development is related to implementing adaptive automatic electronic control systems (ACS). The significant elements of these systems are algorithms of matching of mathematical models to actual performances of the engine. These adaptive models are used directly in control algorithms and are a combination of static and dynamic sub-models. This work considers the dynamic sub-models formation using the Least Square method (LSM) on a base of the engine parameters that are measured in-flight. While implementing this function in the (ACS), the problem of checking the sufficiency of the used information for ensuring the required precision of the model arises. We must do this checking a priori (to determine a set of operation modes, the shape of the engine test impact and volume of recorded information) and a posteriori. Equations of the engine models are considered. Relations are derived that determine the precision of parameters of these models’ estimation depending on the precision of measurement, the composition of the engine power ratings, and durability of observations, at a stepwise change of fuel flow. We present these relations in non-dimensional coordinates that make them universal and ready for application to any turboshaft engine.

Słowa kluczowe

EN

turbine engine; turboshaft; gas generator; dynamic model; engine time constant; identification; estimation error; design of experiment

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Transactions on Aerospace Research
• Rocznik: 2022
• Tom: Nr 4 (269)
• Strony: 59--71
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr., wzory

Twórcy

autor

Yepifanov Sergiy

• Aircraft Engine Design Department, Faculty of Aviation Engines, National Aerospace University ‘Kharkiv Aviation Institute’, 17 Chkalova Street, Kharkiv, Ukraine

• https://orcid.org/0000-0003-0533-9524

autor

Bondarenko Oleksiy

• Aircraft Engine Design Department, Faculty of Aviation Engines, National Aerospace University ‘Kharkiv Aviation Institute’, 17 Chkalova Street, Kharkiv, Ukraine

• https://orcid.org/0000-0001-7943-8555

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).