搜救场景下UAV-UGV协同搜索任务规划
Collaborative search task planning for UAV-UGV in search and rescue scenarios
针对无人机(unmanned aerial vehicle,UAV)与地面无人车(unmanned ground vehicle,UGV)在搜救场景下的协同搜索任务规划问题,提出一种集中任务分配与独立路径规划相结合的方法。首先,根据需求明确任务并分配给UAV和UGV。然后,UAV和UGV依据各自所负责的任务分别进行航迹规划和路径规划。针对任务分配问题,引入一种基于任务类型的“多目标区域分割与分配”模型,采用一种结合遗传算法(genetic algorithm,GA)与禁忌搜索算法的自适应混合算法进行求解。航迹规划针对UAV任务需求构建了“旅行商路径-区域覆盖路径规划”(traveling salesman path-area coverage path planning,TSP-ACPP)模型,采用改进的遗传算法进行求解,即在传统遗传算法的基础上,引入“S”型路径作为初始种群,并设计适应度函数优化筛选过程。针对UGV的路径规划,提出了将A*算法与人工势场算法相结合求解最优行进路径的方法。仿真结果表明,与常用的遗传算法和A*算法相比,所提出的算法能有效完成搜索任务,并在任务执行效率和路径规划精度上均有显著改善。
To address the collaborative search task planning issue for unmanned aerial vehicles (UAV) and unmanned ground vehicles (UGV) in search and rescue scenarios, a method that combines centralized task allocation with independent path planning was proposed. Firstly, tasks were clarified based on requirements and assigned to UAV and UGV. Firstly, the UAV and UGV conducted trajectory planning and path planning independently according to their assigned tasks. For the task allocation problem,a multi-objective area segmentation and allocation model based on task types was proposed,and an adaptive hybrid algorithnm incorporating genetic algorithm and tabu search was developed in solution.For trajectory planning, a “traveling salesman path-area coverage path planning” model was constructed based on the task requirements of the UAV, employing an improved genetic algorithm that introduced an “S”-shaped path as the initial population and designed a fitness function to optimize the selection process. Regarding the path planning for UGV, a method that combines A* algorithm with artificial potential field algorithm was proposed to find the optimal traveling path. Simulation results indicate that the proposed algorithm effectively completes search tasks and shows significant improvements in both task execution efficiency and path planning accuracy compared to commonly used genetic algorithms and A* algorithms.
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国家重点研发计划项目(2022YFC2903800)
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