Analytical redundancy of variable cycle engine based on variable-weights neural network  

作　　者：Zihao ZHANG Xianghua HUANG Tianhong ZHANG 

机构地区：[1]Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Chinese Journal of Aeronautics》2022年第10期84-94,共11页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China(Nos.51576097 and 51976089);Foundation Strengthening Project of the Military Science and Technology Commission,China(No.2017-JCJQ-ZD047-21)。

摘　　要：In this paper, variable-weights neural network is proposed to construct variable cycle engine’s analytical redundancy, when all control variables and environmental variables are changing simultaneously, also accompanied with the whole engine’s degradation. In another word,variable-weights neural network is proposed to solve a multi-variable, strongly nonlinear, dynamic and time-varying problem. By making weights a function of input, variable-weights neural network’s nonlinear expressive capability is increased dramatically at the same time of decreasing the number of parameters. Results demonstrate that although variable-weights neural network and other algorithms excel in different analytical redundancy tasks, due to the fact that variableweights neural network’s calculation time is less than one fifth of other algorithms, the calculation efficiency of variable-weights neural network is five times more than other algorithms. Variableweights neural network not only provides critical variable-weights thought that could be applied in almost all machine learning methods, but also blazes a new way to apply deep learning methods to aeroengines.

关 键 词：Analytical redundancy DEGRADATION Multiple variables Neural networks Variable cycle engine 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]