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为降低建模误差及外部扰动对飞行器多变量不确定系统的影响,提出了一种闭环系统鲁棒D-稳定的动态混合控制分配策略。飞控系统采用模块化的设计思想,利用线性矩阵不等式方法设计了基于虚拟控制指令的鲁棒D-稳定输出反馈控制律;建立了多目标混合优化控制分配模型,推导并证明了该模型的等价实现形式,用于将虚拟控制指令协调分配到各个操纵面。仿真结果表明,该策略能够综合考虑各操纵面不同的物理约束和控制效能,具有较好的鲁棒性能。
In order to reduce the influence of modeling errors and external disturbance on multivariable uncertain system of aircraft, a robust D-Stable dynamic hybrid control strategy for closed-loop system is proposed. The flight control system adopts the modular design idea and designs the robust D-stable output feedback control law based on the virtual control instruction by using the linear matrix inequality method. The multi-objective hybrid optimal control assignment model is established and the model is derived and proved Price realization form for the coordination of virtual control instructions assigned to the various control surfaces. The simulation results show that this strategy can comprehensively consider different physical constraints and control efficiencies of each control surface and has better robustness.