Abstract:

The influence of measurement errors can be reduced and the changing trend of gas path parameters can be easily extracted by using smoothing method so as to analyze the engine performance. Smoothing evaluation indices and weight analysis are used to construct objective function with the fusion of multiple smoothing indices for the smoothing processing. This method is applied to difference analysis and trend analysis, getting the optimal smoothing method by setting weights and solving the objective function. Results show that this method is practical. Compared with other smoothing methods, the smoothing evaluation method based on the fusion of multiple smoothing indices has good generalization and independent selection.

Key words: gas path parameters, fusion of multiple smoothing indices, weight, smoothing