航空学报 > 2023, Vol. 44 Issue (S1): 727648-727648   doi: 10.7527/S1000-6893.2022.27648

基于改进冲突搜索的多智能体路径规划算法

于连波1, 曹品钊1, 石亮2, 连捷1, 王东1()   

  1. 1.大连理工大学 电子信息与电气工程学部 控制科学与工程学院,大连 116024
    2.中国航空研究院,北京 100012
  • 收稿日期:2022-06-20 修回日期:2022-07-10 接受日期:2022-09-06 出版日期:2023-06-25 发布日期:2022-09-22
  • 通讯作者: 王东 E-mail:dwang@dlut.edu.cn
  • 基金资助:
    国家重点研发计划(2019YFE0197700);国家自然科学基金(61973050);辽宁省兴辽英才计划(XLYC

An improved conflict⁃based search algorithm for multi⁃agent path planning

Lianbo YU1, Pinzhao CAO1, Liang SHI2, Jie LIAN1, Dong WANG1()   

  1. 1.School of Control Science and Engineering,Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China
    2.Chinese Aeronautical Establishment,Beijing 100012,China
  • Received:2022-06-20 Revised:2022-07-10 Accepted:2022-09-06 Online:2023-06-25 Published:2022-09-22
  • Contact: Dong WANG E-mail:dwang@dlut.edu.cn
  • Supported by:
    National Key Research and Development Program of China(2019YFE0197700);National Natural Science Foundation of China(61973050);Liaoning Revitalization Talents Program(XLYC2007010);Fundamental Research Funds for the Central Universities(DUT20GJ209)

摘要:

多智能体路径规划问题在航空航天领域的多机任务中应用广泛但求解困难。基于改进冲突搜索的算法被设计用来快速求解多智能体路径规划问题。全局路径规划方面,首先设计综合考虑路径代价总和以及最大完工时间的多目标代价函数,其次提出基于唯一最短路径的冲突分类及消解方案,降低多智能体路径规划的计算量。在线冲突消解方面,利用速度障碍法在线检测和消解智能体与动态障碍物间的突发冲突。仿真结果表明,本文算法在全局路径规划方面保留基于冲突搜索算法的最优性并且降低了算法计算量,同时本文算法能够有效实现在线冲突检测与消解。

关键词: 多智能体路径规划, 基于冲突搜索, 冲突类型, 冲突检测, 冲突消解

Abstract:

The multi-agent path planning problem is widely used in multi-machine tasks in the aerospace field, but it is difficult to solve the problem. The improved conflict-based search algorithm is designed to quickly solve the multi-agent path planning problem. In terms of global path planning, a multi-objective cost function is designed to give a comprehensive consideration of the sum of path costs and the make span, and a conflict classification and resolution scheme based on the unique shortest path is then proposed to reduce the computational cost of multi-agent path planning. In terms of online conflict resolution, the velocity obstacle method is used to detect and resolve the sudden conflict between agents and dynamic obstacles. Simulation results show that the algorithm proposed retains the optimality of the conflict-based search algorithm in global path planning and reduces the amount of calculation. Thus, this algorithm can effectively realize online conflict detection and resolution.

Key words: multi-agent path planning, conflict-based search, conflict classification, conflict detection, conflict resolution

中图分类号: