An approximate non-linear model for aeroengine control

作者：Yu D; Zhao H^*; Xu Z; Sui Y; Liu J

来源：Proceedings of the Institution of Mechanical Engineers - Part G: Journal of Aerospace Engineering , 2011, 225(G12): 1366-1381.

DOI：10.1177/0954410011400959

• turbofan
• jet engine
• modelling
• LPV
• identification
• non-linear control

Control-oriented non-linear modelling is the requirement of reliable non-linear control for aeroengines. The complex engine model must be simplified such that advanced non-linear control techniques can be applied. Some simplified engine models lose the physical interpretability, and further, the analysability of stability and performance of the real closed-loop system, which eventually hinders their industrial implementation. Linear parameter-varying model attains certain success in aeroengine control in recent years, but its potential drawback has also been proposed in theoretical research. This article proceeds to reveal this problem from a model perspective. Then, an approximate non-linear model for aeroengine control is introduced, followed by an identification procedure for more efficient modelling. Simulations show good precision of this model in capturing the non-linear behaviour of a turbofan engine. Theoretically, controllers designed with this model can guarantee local stability and performance for the real plant.

• 出版日期2011-12
• 单位哈尔滨工业大学