This paper addresses the limitations of the bidirectional Rapidly-exploring Random Tree algorithm (RRT-Connect) in mobile robot path planning, particularly its slow convergence speed and high memory consumption. We propose an improved algorithm that integrates the Artificial Potential Field (APF) method with RRT-Connect. The enhanced algorithm employs three key innovations: (1) variable step-size sampling strategy, (2) APF-guided intelligent tree expansion toward target regions, and (3) a node pruning strategy to reduce memory usage. Comprehensive experiments conducted in various typical scenarios demonstrate that the proposed algorithm significantly outperforms conventional RRT and RRT-Connect methods in terms of path quality, convergence speed, and computational efficiency.

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An Improved Path Planning Algorithm for Mobile Robots Based on RRT-Connect

  • Pengtao Ji,
  • Tao Chao,
  • Ping Ma,
  • Qing Guo

摘要

This paper addresses the limitations of the bidirectional Rapidly-exploring Random Tree algorithm (RRT-Connect) in mobile robot path planning, particularly its slow convergence speed and high memory consumption. We propose an improved algorithm that integrates the Artificial Potential Field (APF) method with RRT-Connect. The enhanced algorithm employs three key innovations: (1) variable step-size sampling strategy, (2) APF-guided intelligent tree expansion toward target regions, and (3) a node pruning strategy to reduce memory usage. Comprehensive experiments conducted in various typical scenarios demonstrate that the proposed algorithm significantly outperforms conventional RRT and RRT-Connect methods in terms of path quality, convergence speed, and computational efficiency.