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arXiv 2006.02027cs.ROcs.CG
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序列流形上基于采样的运动规划

Sampling-Based Motion Planning on Sequenced Manifolds

University of Southern California(南加州大学)

Peter Englert, Isabel M. Rayas Fernández, Ragesh K. Ramachandran, Gaurav S. Sukhatme

摘要:

我们解决的问题,规划机器人运动的约束配置空间中的约束在整个运动的变化。该问题被制定为一个固定序列的相交流形,机器人需要遍历,以解决任务。我们指定了一类连续的运动规划问题,满足一个特定的属性的变化时,在自由配置空间之间的流形。对于这个问题的类,我们开发的算法规划序列流形(PSM*),搜索流形之间的最佳交点,通过使用RRT* 在一个新的转向策略的内部循环。我们提供了一个关于PSM* 的概率完备性和渐近最优性的理论分析。此外,我们评估其规划性能的多机器人物体运输任务。视频:https://youtu.be/Q8kbILTRxfU代码:https://github.com/etpr/sequential-manifold-planning

英文摘要:

We address the problem of planning robot motions in constrained configuration spaces where the constraints change throughout the motion. The problem is formulated as a fixed sequence of intersecting manifolds, which the robot needs to traverse in order to solve the task. We specify a class of sequential motion planning problems that fulfill a particular property of the change in the free configuration space when transitioning between manifolds. For this problem class, we develop the algorithm Planning on Sequenced Manifolds (PSM*) which searches for optimal intersection points between manifolds by using RRT* in an inner loop with a novel steering strategy. We provide a theoretical analysis regarding PSM*s probabilistic completeness and asymptotic optimality. Further, we evaluate its planning performance on multi-robot object transportation tasks. Video: https://youtu.be/Q8kbILTRxfU Code: https://github.com/etpr/sequential-manifold-planning

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