1. T-S Fuzzy Modelling and H∞ Attitude Control for Hypersonic Gliding Vehicles.
- Author
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Zhang, Weidong, Huang, Xianlin, and Gao, Xiao-Zhi
- Subjects
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HYPERSONIC planes , *ATTITUDE sensors (Navigation) , *TRACKING control systems , *NONLINEAR theories , *TAYLOR'S series , *LINEAR matrix inequalities - Abstract
This paper addresses the T-S fuzzy modelling and H∞ attitude control in three channels for hypersonic gliding vehicles (HGVs). First, the control-oriented affine nonlinear model has been established which is transformed from the reentry dynamics. Then, based on Taylor’s expansion approach and the fuzzy linearization approach, the homogeneous T-S local modelling technique for HGVs is proposed. Given the approximation accuracy and controller design complexity, appropriate fuzzy premise variables and operating points of interest are selected to construct the T-S homogeneous submodels. With so-called fuzzy blending, the original plant is transformed into the overall T-S fuzzy model with disturbance. By utilizing Lyapunov functional approach, a state feedback fuzzy controller has been designed based on relaxed linear matrix inequality (LMI) conditions to stable the original plants with a prescribed H∞ performance of disturbance. Finally, numerical simulations are performed to demonstrate the effectiveness of the proposed H∞ T-S fuzzy controller for the original attitude dynamics; the superiority of the designed T-S fuzzy controller compared with other local controllers based on the constructed fuzzy model is shown as well. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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