[1]CHENG Yi,XIAO Hongtu.Mobile-robot dynamic path planning based on improved A* and Morphin algorithms[J].CAAI Transactions on Intelligent Systems,2020,15(3):546-552.[doi:10.11992/tis.201812023]
Copy
CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
15
Number of periods:
2020 3
Page number:
546-552
Column:
学术论文—机器学习
Public date:
2020-05-05
- Title:
-
Mobile-robot dynamic path planning based on improved A* and Morphin algorithms
- Author(s):
-
CHENG Yi; XIAO Hongtu
-
School of Electrical Engineering and Automation, University of Tianjin Polytechnic, Tianjin 300387, China
-
- Keywords:
-
mobile robot; A* algorithm; improved A* algorithm; Morphin search tree; global-path planning; local path planning; dynamic path planning; real-time obstacle avoidanc
- CLC:
-
TP242
- DOI:
-
10.11992/tis.201812023
- Abstract:
-
The traditional A* algorithm can experience collisions or path-planning failure in dynamic complicated environments. To meet global optimal requirements and achieve real-time obstacle avoidance in mobile-robot path planning, we propose a novel method that fuses an improved A* algorithm with a Morphin search tree algorithm. First, we improved the A* algorithm by reducing the selection of key nodes in the path-planning process and performing path smoothing when planning the global optimal path. Then, based on the local information obtained by the mobile-robot sensor, the Morphin search tree algorithm is used to dynamically localize the global path. Thus, obstacles are avoided both by ensuring a better global path and by real-time obstacle avoidance as the robot moves to the target. The MATLAB simulation results show that the proposed dynamic path-planning method improves both the time and path. The local path is corrected via the optimized global-path planning, dynamic obstacle avoidance, and the improved efficiency with which the robot reaches the target point.