利用飞行试验数据对发动机参数估计的研究

本文研究利用不同飞行状态下测量的发动机变量估计涡轮进口温度和压气机出口压力。参数估计法采用多元线性回归分析法。根据变量选择的综合最优原则 ,从 6个测量变量中选择了回归方程的自变量 ,建立仅包含 3个发动机测量变量的回归模型 ,参数估计结果证明模型的估计精度是满意的。本文还介绍了利用专用设备在线录取发动机变量的数据处理方法。

ON ENGINE PARAMETER ESTIMATION WITH FLIGHT TEST DATA

This paper introduces the parameter estimation research for the turbine inlet temperature and compressor exit pressure by using the engine variables measured under the different flight conditions.The parameter estimation method is multiple linear regression analysis.The independent variables in the regression equations have been selected from six measured engine variables based on the comprehen sive optimal principle about variable selection.The regression models which have been established only include three measured engine variables.The curves of the parameter estimation results shown in this paper demonstrate that the estimation accuracies of these mode ls are satisfactory.This paper also presents the data treatment meth ods of engine variables recorded on line with special equipment.