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arXiv 2007.01087cs.RO
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点足足式机器人的直线行走与平衡

Line Walking and Balancing for Legged Robots with Point Feet

Istituto Italiano di Tecnologia(意大利技术研究院);KU Leuven(鲁汶大学)

Carlos Gonzalez, Victor Barasuol, Marco Frigerio, Roy Featherstone, Darwin G. Caldwell, Claudio Semini

摘要:

腿式系统穿越高度约束环境的能力在很大程度上取决于其运动和平衡控制器的性能。本文提出了一种控制器,擅长在大多数国家的最先进的平衡控制器尚未解决的情况下:线行走,或行走在几乎为零的支持区域。我们的方法使用一个低维的虚拟模型(2-DoF),通过先前派生的四项平衡控制器生成平衡动作,并通过派生的运动学映射将它们转换为机器人。该控制器的能力在模拟中进行了测试,我们展示了90公斤重的四足机器人HyQ通过一座宽度仅为6厘米的桥(与其直径为4厘米的球形脚相比),在沿着一条线移动的同时随时保持双脚平衡。最后,我们提出了我们的初步实验结果显示HyQ平衡的两条腿,而被干扰。

英文摘要:

The ability of legged systems to traverse highly-constrained environments depends by and large on the performance of their motion and balance controllers. This paper presents a controller that excels in a scenario that most state-of-the-art balance controllers have not yet addressed: line walking, or walking on nearly null support regions. Our approach uses a low-dimensional virtual model (2-DoF) to generate balancing actions through a previously derived four-term balance controller and transforms them to the robot through a derived kinematic mapping. The capabilities of this controller are tested in simulation, where we show the 90kg quadruped robot HyQ crossing a bridge of only 6 cm width (compared to its 4 cm diameter spherical foot), by balancing on two feet at any time while moving along a line. Lastly, we present our preliminary experimental results showing HyQ balancing on two legs while being disturbed.

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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