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arXiv 2203.04434cs.RO
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四足机器人动态过渡可行性的立足点评价准则

Foothold Evaluation Criterion for Dynamic Transition Feasibility for Quadruped Robots

Istituto Italiano di Tecnologia(意大利技术研究院);Politecnico di Torino(都灵理工大学);University of Verona(维罗纳大学)

Luca Clemente, Octavio Villarreal, Angelo Bratta, Michele Focchi, Victor Barasuol, Giovanni Gerardo Muscolo, Claudio Semini

摘要:

为了可靠地穿越复杂场景,足式机器人需要在地面反作用力的帮助下移动其基座,地面反作用力只能由与地面瞬间接触的腿产生。正确选择立足点对保持平衡至关重要。在本文中,我们提出了一个立足点的评估标准,认为过渡的可行性,线性和角动力学,以克服复杂的情况。我们设计的凸和非线性配方作为一个直接扩展的连续凸分辨率的质心动态轨迹(C-CROC)在一个滚动的地平线时尚授予动态可行性为未来的行为。该标准集成了基于视觉的立足点适应(VFA)的战略,考虑到机器人运动学,腿碰撞和地形形态。我们验证的有效性所选择的立足点和生成的轨迹在仿真和实验中与90公斤的四足机器人HyQ。

英文摘要:

To traverse complex scenarios reliably a legged robot needs to move its base aided by the ground reaction forces, which can only be generated by the legs that are momentarily in contact with the ground. A proper selection of footholds is crucial for maintaining balance. In this paper, we propose a foothold evaluation criterion that considers the transition feasibility for both linear and angular dynamics to overcome complex scenarios. We devise convex and nonlinear formulations as a direct extension of the Continuous Convex Resolution of Centroidal Dynamic Trajectories (C-CROC) in a receding-horizon fashion to grant dynamic feasibility for future behaviours. The criterion is integrated with a Vision-based Foothold Adaptation (VFA) strategy that takes into account the robot kinematics, leg collisions and terrain morphology. We verify the validity of the selected footholds and the generated trajectories in simulation and experiments with the 90kg quadruped robot HyQ.

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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