基于H∞最优化与层次结构动态逆的非线性飞行控制器设计

doi:CNKI:11-1929/V.20110330.1306.005

Abstract

Abstract: A nonlinear flight controller design using H_∞ optimization and hierarchy-structured dynamic inversion(HSDI)is proposed for a winged missile with disturbance considered. The structure of HSDI is reduced to three layers according to their time-scales and variables are recategorized to simplify the HSDI controller design. Then, the HSDI controller and the nonlinear 6 degrees-of-freedom(DOF)dynamic model of the researched missile are used to compose the generalized plant. More-over, the state variables of plant are rearranged. And a 2 DOF H_∞ control structure is also introduced to enhance robustness performance. The analysis of close-loop system singular values and nonlinear 6 DOF flight simulation results presented in the paper demonstrate the good tracking performance and disturbance rejection of the designed flight controller.

Key words: missiles, flight control, H_∞ optimization, hierarchy-structured dynamic inversion, hierarchy-structure modification, state variable rearrangement

CLC Number:

V249.12

CAO Lijia, ZHANG Shengxiu, LI Xiaofeng, LIU Yi'nan. Nonlinear Flight Controller Design Using H_∞ Optimization and Hierarchy-structured Dynamic Inversion[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(9): 1678-1685.

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Nonlinear Flight Controller Design Using H_∞ Optimization and Hierarchy-structured Dynamic Inversion

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Nonlinear Flight Controller Design Using H∞ Optimization and Hierarchy-structured Dynamic Inversion

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Nonlinear Flight Controller Design Using H_∞ Optimization and Hierarchy-structured Dynamic Inversion