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.