首页> 中文期刊> 《系统工程与电子技术》 >考虑非最小相位特性的高超声速飞行器轨迹跟踪控制

考虑非最小相位特性的高超声速飞行器轨迹跟踪控制

         

摘要

The control design problem is investigated for air-breathing hypersonic vehicles with non-mini-mum phase characteristic .Firstly ,this model is separated as velocity subsystem and pitch dynamics subsystem . For the former ,a dynamic inversion controller is derived .For the latter ,appropriate external dynamics and in-ternal dynamics are selected .The longitudinal pitch channel model is converted to a canonical form by coordinate transformation .The criterion of non-minimum phase property is given by the stability analysis of internal dy-namics .Finally ,the internal dynamic stabilization is realized by adding the state feedback of the canonical trans-formation in the dynamic inverse controller ,and the stability of the system is proved based on the Lyapunov e-quation .The simulation results show that the proposed method achieves good tracking control effect and stabili-zes the internal dynamics of the system effectively .%针对带有非最小相位特性的吸气式高超声速飞行器控制问题,提出了一种输出跟踪控制方法.对于不具有非最小相位特性的速度子系统,运用动态逆控制技术设计了状态反馈控制器;针对具有非最小相位特性的高度子系统,首先选取合理的内外动态变量,通过坐标变换,将纵向俯仰通道模型转换为正则形式.然后通过对内动态进行稳定性分析,提出了飞行器系统非最小相位特性的判定定理.最后通过在动态逆控制器中加入正则变换后的状态反馈,实现了内动态的镇定,并基于Lyapunov方程证明了系统稳定性.仿真结果表明,该方法实现了良好的跟踪控制效果,并有效地镇定了系统的内动态.

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