摘要
航空发动机气路参数的平滑处理,可以减少测量噪声的影响,有利于提取气路参数的变化趋势,能够对发动机性能进行准确的分析。利用平滑效果指标,通过权重分析法,构造多平滑指标融合目标函数,对航空发动机气路参数进行平滑处理。将此方法应用于航空发动机差异分析和趋势分析,通过分析并赋予权重求解目标函数,选取最优平滑方法。通过平滑效果可知此方法在差异分析、趋势分析方面处理效果明显,具有实用性。多指标融合目标函数判别法与其他平滑方法相比,推广性更好,自主选择性更大。
The influence of measurement errors can be reduced and the changing trend of gas path parameters can be easilyextracted by using smoothing method so as to analyze the engine performance. Smoothing evaluation indices andweight analysis are used to construct objective function with the fusion of multiple smoothing indices for thesmoothing processing. This method is applied to difference analysis and trend analysis, getting the optimalsmoothing method by setting weights and solving the objective function. Results show that this method ispractical. Compared with other smoothing methods, the smoothing evaluation method based on the fusion ofmultiple smoothing indices has good generalization and independent selection.
出处
《中国民航大学学报》
CAS
2016年第3期17-21,32,共6页
Journal of Civil Aviation University of China
基金
中央高校基本科研业务费专项(ZXH2012P007)
关键词
气路参数
多平滑指标融合
权重
平滑处理
gas path parameters
fusion of multiple smoothing indices
weight
smoothing
