arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1907.06337cs.RO
收藏

结合空中和地面测量的地面机器人节能路径规划

Energy-efficient Path Planning for Ground Robots by Combining Air and Ground Measurements

University of Minnesota(明尼苏达大学)

Minghan Wei, Volkan Isler

摘要:

随着移动机器人在户外应用中的应用越来越多,设计节能的机器人导航算法变得越来越重要。有两种主要的节能导航方法:离线方法依赖于先前构建的能量地图作为路径规划器的输入。获得大环境的能量图具有挑战性。或者,机器人可以以在线方式导航,并在导航时构建地图。在未知环境中仅利用局部信息进行在线导航仍然是一个具有挑战性的研究问题。在本文中,我们提出了一种新的方法,解决这两个挑战。我们的方法开始与环境的分割航空图像。我们表明,可以建立一个粗略的能量图的分割。然而,特定地形类型(例如草地)的绝对能量值可能会因环境而异。因此,我们不是直接使用这个能量图,而是使用它来构建基于高斯过程(GP)的环境表示的协方差函数。在在线阶段,在导航期间收集的能量测量值用于使用GP回归来估计整个环境中的能量分布。再加上一个A* 类导航算法,我们在模拟中表明,我们的方法优于代表性的基线方法。我们还提出了现场实验的结果,证明了我们的方法的实用性。

英文摘要:

As mobile robots find increasing use in outdoor applications, designing energy-efficient robot navigation algorithms is gaining importance. There are two primary approaches to energy efficient navigation: Offline approaches rely on a previously built energy map as input to a path planner. Obtaining energy maps for large environments is challenging. Alternatively, the robot can navigate in an online fashion and build the map as it navigates. Online navigation in unknown environments with only local information is still a challenging research problem. In this paper, we present a novel approach which addresses both of these challenges. Our approach starts with a segmented aerial image of the environment. We show that a coarse energy map can be built from the segmentation. However, the absolute energy value for a specific terrain type (e.g. grass) can vary across environments. Therefore, rather than using this energy map directly, we use it to build the covariance function for a Gaussian Process (GP) based representation of the environment. In the online phase, energy measurements collected during navigation are used for estimating energy profiles across the environment using GP regression. Coupled with an A*-like navigation algorithm, we show in simulations that our approach outperforms representative baseline approaches. We also present results from field experiments which demonstrate the practical applicability of our method.

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。

↑