Aiming at information shortage of single parameter and easy contradiction of multi-parameter in the process of engine performance monitor, a method of fuzzy index fusion in the engine performance moni-tor was presented. With effective information fusion technology, based on parameter mean and entropy of sliding window, performance fuzzy fusion index was established. Residual decision-making logic was de-duced by neural network according to pre-determined fuzzy fusion rule. Example indicated fuzzy index could track the engine performance slow deterioration and sudden changes. Fuzzy fusion index was recon-structed and predicted by adopting orthogonal basis decomposition method. Compared with combination of linear and quadratic prediction method, orthogonal basis decomposition method gets higher accuracy, and predicts performance change accurately.
aero-engineperformance monitoringfuzzy information fusionorthogonal basis decompositiondecision-making logicinformation entropy
NETL
NSTL
维普
万方数据
