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arXiv 1405.2872cs.RO
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基于渐近最优采样的Lipschitz连续动力系统运动规划算法分析

Analysis of Asymptotically Optimal Sampling-based Motion Planning Algorithms for Lipschitz Continuous Dynamical Systems

Massachusetts Institute of Technology(麻省理工学院);University of Queensland(昆士兰大学)

Georgios Papadopoulos, Hanna Kurniawati, Nicholas M. Patrikalakis

摘要:

在过去的20年中,大量的工作致力于开发基于采样的运动规划算法,例如快速探索随机树(RRT)及其渐近最优版本(例如RRT*)。然而,RRT* 的渐近最优性仅适用于线性和全驱动系统或少数非线性系统(例如Dubin的汽车),其中转向功能可用。本文的目的是表明,渐近最优的运动规划的动力系统微分约束可以实现不使用转向功能。我们开发了一种新的分析基于采样的规划算法,采样控制空间。这一分析表明,任何Lipschitz连续动力系统的渐近最优路径规划可以通过直接对控制空间进行采样来实现。我们还确定这类算法的收敛速度的理论界。随着迭代次数的增加,由这些算法生成的轨迹以概率1接近最优控制轨迹。模拟结果是有希望的。

英文摘要:

Over the last 20 years significant effort has been dedicated to the development of sampling-based motion planning algorithms such as the Rapidly-exploring Random Trees (RRT) and its asymptotically optimal version (e.g. RRT*). However, asymptotic optimality for RRT* only holds for linear and fully actuated systems or for a small number of non-linear systems (e.g. Dubin's car) for which a steering function is available. The purpose of this paper is to show that asymptotically optimal motion planning for dynamical systems with differential constraints can be achieved without the use of a steering function. We develop a novel analysis on sampling-based planning algorithms that sample the control space. This analysis demonstrated that asymptotically optimal path planning for any Lipschitz continuous dynamical system can be achieved by sampling the control space directly. We also determine theoretical bounds on the convergence rates for this class of algorithms. As the number of iterations increases, the trajectory generated by these algorithms, approaches the optimal control trajectory, with probability one. Simulation results are promising.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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