钢筋绑扎机器人平面顺序全覆盖路径规划

Order-Constrained Coverage Path Planning for Rebar-Tying Robots on Planar Surfaces

  • 摘要: 针对钢筋绑扎作业中钢筋平面稳定性对绑扎顺序的要求,提出一种绑扎优先级感知神经网络融合A*算法的顺序全覆盖路径规划方法。首先,根据钢筋平面和绑扎机器人的结构特点,构建钢筋平面的栅格地图。随后,考虑钢筋绑扎机器人绑扎过程中的顺序要求,规避路径中的障碍和机器人的路径可行性,提出一种目标重构的优先感知神经网络路径规划方法。然后,融合路径动态修正的A*算法解决规划陷入死区时的逃逸问题。最后,为了衡量绑扎后钢筋平面的稳定性,提出一种基于时间-空间的钢筋平面稳定性评价指标。基于该指标体系进行仿真与实验,结果表明本文所提方法使得钢筋平面稳定性由36.2%提升至76.4%,验证了该方法的顺序合理性和平面稳定性,同时,通过实体实验进一步验证算法的合理性和实际应用的可行性,为钢筋绑扎机器人的自动绑扎作业提供了可靠的技术支撑。

     

    Abstract: In response to the requirements of rebar plane stability on the tying sequence during rebar-tying operations, this paper proposes an order-constrained coverage path planning method based on a priority-aware neural network fused with the A* algorithm.First, a grid map of the rebar plane is constructed according to the structural characteristics of both the rebar surface and the rebar-tying robot. Then, considering the sequential constraints inherent in the rebar-tying process, as well as obstacle avoidance and the robot’s kinematic feasibility, a target-reconstructed priority-aware neural network is developed to generate feasible paths. Subsequently, an A*-based dynamic path correction mechanism is integrated to address dead-zone escape problems that may occur during planning. Finally, to quantitatively evaluate the stability of the rebar plane after tying, a spatio-temporal stability evaluation index is proposed. Simulation and experimental results demonstrate that the proposed method improves the rebar plane stability from 36.2% to 76.4%, validating the rationality of the tying sequence and the effectiveness of the stability enhancement. Moreover, physical experiments further confirm the feasibility and practicality of the proposed algorithm, providing reliable technical support for automated rebar-tying operations.

     

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