The Chaotic Prediction for Aero-Engine Performance Parameters Based on Nonlinear PLS Regression

The Chaotic Prediction for Aero-Engine Performance Parameters Based on Nonlinear PLS Regression

The prediction of the aero-engine performance parameters is very important for aero-engine condition monitoring and fault diagnosis. In this paper, the chaotic phase space of engine exhaust temperature EGT time series which come from actual air-borne ACARS data is reconstructed through selecting some suitable nearby points. The partial least square PLS based on the cubic spline function or the ...

Application of an improved adaptive chaos prediction model in aero-engine performance parameters

Based on the research of complexity and non-linearity of aero-engine exhaust gas temperature (EGT) system, a regularization adaptive chaotic prediction model applied in short time forecasting of EGT was proposed. In this research, we develop a new hybrid particle swarm optimization (HPSO) arithmetic in order to improve the accuracy of the forecasting model. This arithmetic enhanced the ability ...

study of hash functions based on chaotic maps

توابع درهم نقش بسیار مهم در سیستم های رمزنگاری و پروتکل های امنیتی دارند. در سیستم های رمزنگاری برای دستیابی به احراز درستی و اصالت داده دو روش مورد استفاده قرار می گیرند که عبارتند از توابع رمزنگاری کلیددار و توابع درهم ساز. توابع درهم ساز، توابعی هستند که هر متن با طول دلخواه را به دنباله ای با طول ثابت تبدیل می کنند. از جمله پرکاربردترین و معروف ترین توابع درهم می توان توابع درهم ساز md4, md...

Robust PLS regression based on simple least median squares regression

Investigation of the effect of piston geometrical parameters on RCCI engine performance based on second law of thermodynamic

The reactivity controlled compression ignition engines have high thermal efficiency and low exhaust emission of nitrogen oxides and soot because of low temperature combustion. In this type of engines, low reactivity fuel is injected to air through intake port and high reactivity fuel is injected into the combustion chamber during compression stroke. The aim of current study is to investigate th...