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为研究发动机在使用过程中的性能衰退,提出了一种发动机部件性能参数残差序列分析方法。利用发动机模型进行发动机测量参数对部件性能参数的敏感度分析,优化选取充分表征发动机性能衰退的部件性能参数,建立性能参数多元线性回归模型,得到了性能参数的残差序列,通过对残差序列的统计量分析,成功地确定了发动机性能突变时刻,为发动机的维护起到了一定的指导作用。
In order to study the degradation of engine performance during use, a method of residual sequence analysis of engine performance parameters was proposed. The engine model was used to analyze the sensitivity of engine measurement parameters to the performance parameters of the components. The performance parameters of the components, which fully characterize the degradation of engine performance, were optimized. The multiple linear regression model of performance parameters was established and the residuals of performance parameters were obtained. Of the statistical analysis, successfully identified a sudden change in engine performance, for the maintenance of the engine has played a guiding role.