Parametric diagnosis of the adaptive gas path in the automatic control system of the aircraft engine

International Conference on Information Technologies in Business and Industry 2016

计算机科学;经济学;工业技术

Kuznetsova, T.A.^1

Perm National Research Polytechnic University, 29, Komsomolsky Ave., 614990, Russia^1

关键词: Coefficient matrix;    Diagnostic algorithms;    Engine parameter;    Gas dynamic parameters;    Health monitoring;    Identification accuracy;    Influence coefficient;    Low-level simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/803/1/012088/pdf
DOI  :  10.1088/1742-6596/803/1/012088

来源: IOP

【 摘 要 】

The paper dwells on the adaptive multimode mathematical model of the gas-turbine aircraft engine (GTE) embedded in the automatic control system (ACS). The mathematical model is based on the throttle performances, and is characterized by high accuracy of engine parameters identification in stationary and dynamic modes. The proposed on-board engine model is the state space linearized low-level simulation. The engine health is identified by the influence of the coefficient matrix. The influence coefficient is determined by the GTE high-level mathematical model based on measurements of gas-dynamic parameters. In the automatic control algorithm, the sum of squares of the deviation between the parameters of the mathematical model and real GTE is minimized. The proposed mathematical model is effectively used for gas path defects detecting in on-line GTE health monitoring. The accuracy of the on-board mathematical model embedded in ACS determines the quality of adaptive control and reliability of the engine. To improve the accuracy of identification solutions and sustainability provision, the numerical method of Monte Carlo was used. The parametric diagnostic algorithm based on the LPτ - sequence was developed and tested. Analysis of the results suggests that the application of the developed algorithms allows achieving higher identification accuracy and reliability than similar models used in practice.