高超声速飞行器基于路径跟踪的制导方法

摘要

针对具有高位置精度要求的高超声速飞行器制导问题，提出一种基于路径跟踪和自适应动态面控制（ADSC）方法的轨迹跟踪制导的方法。根据高超声速飞行器动力学建立数学模型，同时为了方便跟踪控制对数学模型进行了部分线性化处理。针对高超声速滑翔飞行器三维轨迹跟踪存在的欠驱动问题，引入路径跟踪的思路将其转化为二维的跟踪控制问题；针对高超声速飞行器建模不确定性强的特点，使用具有较强鲁棒性的ADSC方法实现鲁棒的路径跟踪。能够证明所提出的方法可以以任意小的误差实现参考轨迹跟踪。仿真结果表明，该制导方法具有较高的跟踪精度并且具有较强的克服模型不确定性的能力。%A new trajectory tracking scheme for hypersonic vehicles is proposed aiming at providing a high landing precision,based on the concept of path-following and adaptive dynamic surface control (ADSC).A mathematical model is established according to the dynamics of hypersonic vehicles,and a partial linearization is conducted to derive the model suitable for tracking control.The 3-D trajectory-tracking for hypersonic gliding vehicles is an under-actuated problem,so the concept of path-following is adopted to transform it into a 2-D tracking problem.An ADSC method is adopted in the tracking control to provide robustness under model uncertainties.It is proofed that the tracking error of the proposed method can be arbitrarily small.Finally the high precision and robustness of the guidance scheme are verified through numerical simulation.