The invention belongs to the field of aero-engine variable control, and particularly relates to a jet flow precooling engine inlet total temperature dynamic characteristic compensation method. Comprising the following steps of: 1, installing two inlet total temperature sensors with non-similar redundancy at positions close to the same measuring point of the inlet total temperature of the jet flow pre-cooling engine, and acquiring the measured values of the two inlet total temperature sensors with the non-similar redundancy; 2, constructing a transfer function model of the jet flow precooling engine inlet total temperature sensor; 3, identifying the time constant of the inlet total temperature sensor of the jet flow pre-cooling engine according to the measured values of the two inlet total temperature sensors with the dissimilar redundancies and the transfer function model; and 4, calculating the inlet total temperature output of each calculation period according to the measured values of the two inlet total temperature sensors with the dissimilar redundancies, the transfer function model and the time constant. The problems of undercompensation and overcompensation caused by band-pass filtering of a single sensor can be solved.
本申请属于航空发动机变量控制领域,特别涉及一种射流预冷发动机进口总温动态特性补偿方法。包括:步骤一、在射流预冷发动机进口总温同一测点的临近位置安装两支非相似余度的进口总温传感器,获取两支非相似余度的进口总温传感器测量值;步骤二、构建射流预冷发动机进口总温传感器传递函数模型;步骤三、根据两支非相似余度的进口总温传感器测量值以及所述传递函数模型进行射流预冷发动机进口总温传感器时间常数辨识;步骤四、根据两支非相似余度的进口总温传感器测量值、所述传递函数模型以及所述时间常数,计算出每个计算周期的进口总温输出。本申请能够解决单一传感器带通滤波导致的欠补偿和过补偿问题。
Jet flow precooling engine inlet total temperature dynamic characteristic compensation method
一种射流预冷发动机进口总温动态特性补偿方法
2023-05-23
Patent
Elektronische Ressource
Chinesisch
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
Research on Inlet Precooling for Mini-Turbojet Engines
AIAA | 2004
|Development Study of Precooling for Atrex Engine
British Library Conference Proceedings | 1995
|