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arXiv 1612.08034cs.RO
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基于模型预测控制和捕获点的人形机器人推力恢复

Push Recovery of a Humanoid Robot Based on Model Predictive Control and Capture Point

University of Tehran(德黑兰大学);K. N. Toosi University of Technology(K. N. 图什理工大学)

Milad Shafiee-Ashtiani, Aghil Yousefi-Koma, Masoud Shariat-Panahi, Majid Khadiv

摘要:

三个生物启发的策略,已被用于平衡恢复的机器人的脚踝,臀部和步进策略。然而,有几种情况下,步进机器人是不可能的,例如。G.当可用的接触表面有限时。在这种情况下,通过调整上半身的角动量(髋部策略)或零力矩点(ZMP)(脚踝策略)来恢复平衡是必不可少的。在本文中,一个单一的模型预测控制(MPC)计划,用于控制捕获点(CP)到一个期望的位置,通过调制ZMP和质心力矩枢轴(CMP)。所提出的控制器的目标是控制CP,当CP在支撑多边形外时采用CMP,和/或当CP在支撑多边形内时采用ZMP。所提出的算法实现的SURENA III人形机器人的抽象模型。所得到的结果表明,所提出的方法的有效性,在存在严重的推动,即使当支持多边形收缩到一个点或一条线。

英文摘要:

The three bio-inspired strategies that have been used for balance recovery of biped robots are the ankle, hip and stepping Strategies. However, there are several cases for a biped robot where stepping is not possible, e. g. when the available contact surfaces are limited. In this situation, the balance recovery by modulating the angular momentum of the upper body (Hip-strategy) or the Zero Moment Point (ZMP) (Ankle strategy) is essential. In this paper, a single Model Predictive Control (MPC) scheme is employed for controlling the Capture Point (CP) to a desired position by modulating both the ZMP and the Centroidal Moment Pivot (CMP). The goal of the proposed controller is to control the CP, employing the CMP when the CP is out of the support polygon, and/or the ZMP when the CP is inside the support polygon. The proposed algorithm is implemented on an abstract model of the SURENA III humanoid robot. Obtained results show the effectiveness of the proposed approach in the presence of severe pushes, even when the support polygon is shrunken to a point or a line.

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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