Global Dynamic Path Planning Based on Fusion of Improved A* Algorithm and Dynamic Window Approach[J]. 2017, 51(11): 137-143. DOI: 10.7652/xjtuxb201711019.
DOI:
Global Dynamic Path Planning Based on Fusion of Improved A* Algorithm and Dynamic Window Approach[J]. 2017, 51(11): 137-143. DOI: 10.7652/xjtuxb201711019.DOI:
Global Dynamic Path Planning Based on Fusion of Improved A* Algorithm and Dynamic Window Approach
To meet the requirements of global optimal and real-time obstacle avoidance in mobile robot path planning
a novel method based on the fusion of improved A
*
algorithm and dynamic window approach is proposed. Combining Manhattan distance with Euclidean distance
a more appropriate heuristic function is designed for A
*
algorithm. Then a key node culling scheme is introduced into the traditional A
*
algorithm to remove the redundant nodes. An evaluation function considering globally optimal path is constructed. The dynamic window approach based on the evaluation function is applied to perform real-time dynamic path planning to guarantee the sm
oothness of path and the local obstacle avoidance ability as holding the global optimality of path. The experimental results demonstrate that compared with traditional A
*
algorithm
the smoother path is found
the ability of dynamic obstacle avoidance is more obvious and the control parameters for robots are obtained. The proposed method outperforms traditional dynamic window approach in guaranteeing the global optimality of path planning
and the path distance reduces from 28.879 m to 22.285 m.
关键词
Keywords
references
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