航空发动机仿真模型参数自适应校正

采用修正因子方法建立自适应仿真模型，运用改进的共轭梯度算法求解非线性规划问题，依据发动机台架试车和空中试飞测量数据，对发动机仿真模型的部件特性参数进行校正，使模型的计算输出与试验测量数据吻合。应用本文方法对某型双转子加力涡喷发动机仿真模型进行校正，获得了满意的仿真精度。

ADAPTIVE RECTIFICATION OF PARAMETERS IN AEROENGINE SIMULATION MODEL

An adaptive simulation model has been developed by means of modification factors.A modified conjugate gradient algorithm is employed for solving the nonlinear programming problem in the model.According to the parameter measurements of the engine on test rig and in flight,the component characteristics of the engine are rectified by the adaptive model,as a result,outputs of the model are in accordance with the measurements.As an example,the method provided was adopted to rectify the parameters in the simulation model of a given twin-spool reheated turbojet engine,and the simulation achieved satisfactory accuracy.