论文标题

用于无碰撞控制机器人的无源导航计划算法

A Passive Navigation Planning Algorithm for Collision-free Control of Mobile Robots

论文作者

Tiseo, Carlo, Ivan, Vladimir, Merkt, Wolfgang, Havoutis, Ioannis, Mistry, Michael, Vijayakumar, Sethu

论文摘要

由于事件的范围有限,在复杂且高度可变的环境中,避免路径计划和碰撞是挑战性的。在文献中,有多种基于模型和学习的方法需要有效地部署大量的计算资源,并且可能具有有限的一般性。我们提出了一种基于全球稳定的被动控制器的计划算法,该算法可以在充满挑战的环境条件下使用有限的计算资源计划平滑轨迹。该架构将最近提出的分形阻抗控制器与有限时间不变性区域结合在一起。由于该方法基于阻抗控制器,因此它也可以直接用作力/扭矩控制器。我们验证了我们的模拟方法,以通过发放Via-toints来分析在挑战凹域中的交互式导航的能力,以及其对低带宽反馈的鲁棒性。使用11个代理的群模拟验证了所提出方法的可扩展性。我们已经在自动式轮式平台上进行了硬件实验,以验证与动态剂(即人和机器人)相互作用的平滑度和稳健性。与依赖数字优化的其他方法相比,所提出的本地规划师的计算复杂性可以通过低功率微型控制器的部署降低能源消耗。

Path planning and collision avoidance are challenging in complex and highly variable environments due to the limited horizon of events. In literature, there are multiple model- and learning-based approaches that require significant computational resources to be effectively deployed and they may have limited generality. We propose a planning algorithm based on a globally stable passive controller that can plan smooth trajectories using limited computational resources in challenging environmental conditions. The architecture combines the recently proposed fractal impedance controller with elastic bands and regions of finite time invariance. As the method is based on an impedance controller, it can also be used directly as a force/torque controller. We validated our method in simulation to analyse the ability of interactive navigation in challenging concave domains via the issuing of via-points, and its robustness to low bandwidth feedback. A swarm simulation using 11 agents validated the scalability of the proposed method. We have performed hardware experiments on a holonomic wheeled platform validating smoothness and robustness of interaction with dynamic agents (i.e., humans and robots). The computational complexity of the proposed local planner enables deployment with low-power micro-controllers lowering the energy consumption compared to other methods that rely upon numeric optimisation.

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