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arXiv 2204.01147cs.RO
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基于轨迹优化和模型预测控制的足式机器人连续跳跃

Continuous Jumping for Legged Robots on Stepping Stones via Trajectory Optimization and Model Predictive Control

University of Southern California(南加州大学)

Chuong Nguyen, Lingfan Bao, Quan Nguyen

摘要:

在不平坦的踏脚石上进行跳跃或奔跑等高度敏捷的动态运动一直是足式机器人运动中的一个挑战性问题。本文提出了一种框架,结合轨迹优化和模型预测控制执行稳健的和连续的跳跃上的垫脚石。在我们的方法中,我们首先利用轨迹优化的基础上的全非线性动力学的机器人产生周期性的跳跃轨迹的各种跳跃距离。设计了基于模型预测控制的跳跃控制器,实现了跳跃过程的平滑过渡,使机器人能够在踏脚石上实现连续跳跃。由于MPC作为一个实时反馈控制器的结合,所提出的框架也被验证为具有未知的高度扰动和模型不确定性的机器人动力学不均匀的平台是强大的。

英文摘要:

Performing highly agile dynamic motions, such as jumping or running on uneven stepping stones has remained a challenging problem in legged robot locomotion. This paper presents a framework that combines trajectory optimization and model predictive control to perform robust and consecutive jumping on stepping stones. In our approach, we first utilize trajectory optimization based on full-nonlinear dynamics of the robot to generate periodic jumping trajectories for various jumping distances. A jumping controller based on a model predictive control is then designed for realizing smooth jumping transitions, enabling the robot to achieve continuous jumps on stepping stones. Thanks to the incorporation of MPC as a real-time feedback controller, the proposed framework is also validated to be robust to uneven platforms with unknown height perturbations and model uncertainty on the robot dynamics.

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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