西北工业大学学报
西北工業大學學報
서북공업대학학보
JOURNAL OF NORTHWESTERN POLYTECHNICAL UNIVERSITY
2014年
3期
412-416
,共5页
刘洋%章卫国%李广文%史静平
劉洋%章衛國%李廣文%史靜平
류양%장위국%리엄문%사정평
无人机%路径规划%概率地图%多目标蚁群算法%三维环境
無人機%路徑規劃%概率地圖%多目標蟻群算法%三維環境
무인궤%로경규화%개솔지도%다목표의군산법%삼유배경
为了解决三维环境中的无人机多路径规划问题,提出了一种基于改进概率地图的多目标蚁群算法。在构建地图时为了增加窄通道中的采样点数量,改进了概率地图法的采样策略,将落在威胁上的采样点移动到自由空间中,可以更好地覆盖规划环境。为了使蚁群算法可以得到多个解,提出了一种多目标蚁群算法。通过引入Pareto解集,播撒不同种类的信息素,使蚁群算法可以同时优化路径长度和威胁大小2个目标,并能得到一组非支配解,有利于决策者选择合适的路径。仿真结果表明,改进的概率地图法可以更好地覆盖规划环境,多目标蚁群算法可以得到一组解,并能收敛到最终解集。
為瞭解決三維環境中的無人機多路徑規劃問題,提齣瞭一種基于改進概率地圖的多目標蟻群算法。在構建地圖時為瞭增加窄通道中的採樣點數量,改進瞭概率地圖法的採樣策略,將落在威脅上的採樣點移動到自由空間中,可以更好地覆蓋規劃環境。為瞭使蟻群算法可以得到多箇解,提齣瞭一種多目標蟻群算法。通過引入Pareto解集,播撒不同種類的信息素,使蟻群算法可以同時優化路徑長度和威脅大小2箇目標,併能得到一組非支配解,有利于決策者選擇閤適的路徑。倣真結果錶明,改進的概率地圖法可以更好地覆蓋規劃環境,多目標蟻群算法可以得到一組解,併能收斂到最終解集。
위료해결삼유배경중적무인궤다로경규화문제,제출료일충기우개진개솔지도적다목표의군산법。재구건지도시위료증가착통도중적채양점수량,개진료개솔지도법적채양책략,장락재위협상적채양점이동도자유공간중,가이경호지복개규화배경。위료사의군산법가이득도다개해,제출료일충다목표의군산법。통과인입Pareto해집,파살불동충류적신식소,사의군산법가이동시우화로경장도화위협대소2개목표,병능득도일조비지배해,유리우결책자선택합괄적로경。방진결과표명,개진적개솔지도법가이경호지복개규화배경,다목표의군산법가이득도일조해,병능수렴도최종해집。
In order to solve the problems existing in the multi-path planning for UAV in the 3D environment, we improve the probability roadmap method ( PRM) by moving the sampling points to increase their number in their narrow passage so that the PRM can better serve the multi-path planning environment. Then we propose the multi-objective ant colony algorithm ( MACA) based on the PRM and apply it to the multi-path planning of the UAV. The MACA can optimize the path length and threat size of the UAV at the same time by updating their pheromones, thus obtaining a set of non-dominant solutions for the decision maker to select appropriate paths. To verify the effective-ness of the MACA, we simulate the multi-path planning environment as shown in Fig. 1; the simulation results, given in Fig.4 and 5 and Tables 1 and 2, and their analysis show preliminarily that our MACA based on PRM serves the 3D multi-path planning environment very well and can obtain a set of non-dominant solutions and con-verge to optimal solutions quickly.