基于A^＊算法的无人机爬升轨迹设计  

Design on UAV Climbing Track Based on A^＊ Algorithm

作　　者：常晓飞[1] 段丽娟[2] 符文星[1] 闫杰[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072 [2]中国航天科工集团公司二院二部,北京100854

出　　处：《飞行力学》2008年第6期22-25,共4页Flight Dynamics

摘　　要：针对无人机爬升性能,运用A*算法设计了无人机爬升优化轨迹。改进了传统搜索算法,根据控制方式设计了节点生成法则;在生成节点时考虑了发动机性能以及飞行约束,减少了搜索范围,提高了搜索效率;并且分别介绍了时间最优以及燃耗最优两种方式的代价函数计算方法。仿真结果表明,运用该方法设计出最快爬升轨迹和燃耗最优爬升轨迹,其生成的飞行轨迹符合飞行约束条件,能够较全面地满足爬升性能,设计结果比较合理。The optimal climbing track of UAV is designed based on A^＊ algorithm according to the climbing performance. The traditional searching space is improved, the node creating principle is obtained by control mode, and the track is created considering the performance of motor and flight restriction, the searching area is reduced and the efficiency is improved, and the calculation methods of cost function for optimal time and least fuel are introduced. The simulation result has shown that the obtained climbing track satisfies comprehensively the condition of flight restriction and climbing performance, and the design results are reasonable.

关 键 词：无人机 A^＊算法 最优爬升轨迹 航迹规划 飞行器 

分 类 号：V249.122[航空宇航科学与技术—飞行器设计]