基于反馈线性化的二维弹道修正控制系统设计

Control System Design for 2-D Trajectory Corrector Based on Feedback Linearization

为提高常规弹药打击精度,依据鸭舵式二维弹道修正原理建立了火箭弹弹道修正动力学模型,针对该系统模型具有多输入多输出(MIMO)、交叉耦合及非定常、非线性等特点,选用输入-输出反馈线性化的微分几何法设计了一类状态控制器,从而有效地将二维弹道修正系统分解为2个独立的控制弹道横纵向修正的子系统.仿真分析表明:该控制器实现了二维弹道修正系统的解耦控制,并具有良好的动态品质及快速跟踪性能.

： To improve the hitting accuracy of conventional munitions, the dynamic model of canard rocket missile was built based on the principle of 2-D trajectory correction. Because of the characteristics of multiple-inputs multiple-outputs （MIMO）, cross coupling, time varying and nonlinear for this system, the differential geometry method of input-output feedback linearization was selected to design state controller, which decomposed the system into two dependent controlling subsystems in lengthwise and cross direction. The simulation results show that this controller not only realizes the function of decoupling for 2-D trajectory correction system, but also has excellent dynamic quality and fast-tracking performance.