Disturbance rejection control of turbofan engine large envelope with multiple performance indicators constraints

To provide prescribed multiple performances for turbofan engine subject to state disturbances, a robust non-linear controller is designed based on the large-envelope nonlinear parameter-varying（NPV） model in this paper. Firstly,the influence of state disturbances on the turbofan system is regarded a...

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Published inKongzhi lilun yu yingyong Vol. 41; no. 10; p. 1811
Main Authors Zhang, Jia-xi, Yue, Shi-zhuang, Sun, Hong-fei, Zeng, Jian-ping
Format Journal Article
LanguageChinese
Published Guangzhou South China University of Technology 01.10.2024
Subjects
Closed loops
Constraints
Control methods
Control systems
Controllers
Disturbances
Errors
Feedback control
Indicators
Nonlinear control
Parameter robustness
Parameter uncertainty
Performance indices
Robust control
Stability
Turbofan engines
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ISSN1000-8152

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Summary:To provide prescribed multiple performances for turbofan engine subject to state disturbances, a robust non-linear controller is designed based on the large-envelope nonlinear parameter-varying（NPV） model in this paper. Firstly,the influence of state disturbances on the turbofan system is regarded as the parameter uncertainty in the system parameters. Then, constraints on performance indicators are translated into constraints on state error. Next the exponential decay function is designed to limit the state error, so that the system can meet the prescribed performance indicators. Finally, the solvability conditions of the controller are obtained via sum of squares（SOS） technique, and the stability of the closed-loop system is proved by the Lyapunov stability theory. Simulation results on a two-axis turbofan engine show that the proposed control method can effectively suppress state disturbances on the turbofan engine and the control system meets the given performance index constraints such as adjustment time,
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ISSN:1000-8152