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arXiv 2103.07588cs.RO
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RLSS:基于线性空间分离的实时的多机器人轨迹重规划

RLSS: Real-time Multi-Robot Trajectory Replanning using Linear Spatial Separations

University of Southern California(南加州大学);California Institute of Technology(加州理工学院)

Baskın Şenbaşlar, Wolfgang Hönig, Nora Ayanian

摘要:

轨迹重规划是多机器人团队在动态环境中导航的关键问题。本文提出了一种基于线性空间分离的重新规划算法RLSS(Replanning using Linear Spatial Separations):一种实时的【形】轨迹重新规划算法,该算法利用线性空间分离来保证多机器人团队的安全性。我们的算法明确地处理机器人的动态限制,是完全分布式的,并且对环境变化,机器人故障和轨迹跟踪错误具有鲁棒性。它不需要机器人之间的通信,而是只依赖于本地的相对测量。我们证明了该算法在实时的【形】仿真和实验中使用物理机器人。我们比较我们的算法的一个国家的最先进的在线轨迹生成算法的基础上模型预测控制,并表明,我们的算法的结果显着减少碰撞在高度约束的环境中,并有效地避免了死锁。

英文摘要:

Trajectory replanning is a critical problem for multi-robot teams navigating dynamic environments. We present RLSS (Replanning using Linear Spatial Separations): a real-time trajectory replanning algorithm for cooperative multi-robot teams that uses linear spatial separations to enforce safety. Our algorithm handles the dynamic limits of the robots explicitly, is completely distributed, and is robust to environment changes, robot failures, and trajectory tracking errors. It requires no communication between robots and relies instead on local relative measurements only. We demonstrate that the algorithm works in real-time both in simulations and in experiments using physical robots. We compare our algorithm to a state-of-the-art online trajectory generation algorithm based on model predictive control, and show that our algorithm results in significantly fewer collisions in highly constrained environments, and effectively avoids deadlocks.

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