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1.郑州大学 机械与动力工程学院,郑州 450001
2.河南省直第三人民医院,郑州 450006
LIU Qiang, E-mail: 13253438290@126.com
Received:15 March 2024,
Published:15 March 2026
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赵天,暴雨萌,浮红,等. 非均匀路面下被动行走机器人的吸引盆外部拓扑结构研究[J]. 机械强度,2026,48(3):37-46.
ZHAO Tian,BAO Yumeng,FU Hong,et al. Study on the external topology structure of the basin of attraction for passive walking robots on rough terrain[J]. Journal of Mechanical Strength,2026,48(3):37-46.
赵天,暴雨萌,浮红,等. 非均匀路面下被动行走机器人的吸引盆外部拓扑结构研究[J]. 机械强度,2026,48(3):37-46. DOI: 10.16579/j.issn.1001.9669.2026.03.005.
ZHAO Tian,BAO Yumeng,FU Hong,et al. Study on the external topology structure of the basin of attraction for passive walking robots on rough terrain[J]. Journal of Mechanical Strength,2026,48(3):37-46. DOI: 10.16579/j.issn.1001.9669.2026.03.005.
目的
2
吸引盆决定了被动行走机器人的全局稳定性,但其狭窄的形态给机器人在现实环境中的稳定行走带来了巨大的挑战。为解决该问题,对非均匀路面下被动行走机器人的吸引盆外部拓扑结构进行了研究。
方法
2
首先,建立了点足机器人在非均匀路面上行走的动力学模型;然后,利用相图、Poincaré截面图和吸引盆探究了机器人的步态变化和全局稳定性,其中,重点研究外界环境因素对系统吸引盆的影响,并对吸引盆的外部拓扑结构进行分类分析;最后,利用Adams软件仿真验证了稳定极限环的行走步态。
结果
2
结果表明,吸引盆外部拓扑结构具有分形特征,其中机器人能至少行走1步的区域占整个状态空间的41.28%。引入路面环境干扰会导致吸引盆的面积减小,但对盆外部拓扑结构的影响较小。研究结果拓展了被动行走理论的适用范围,并为步态初始条件的选择提供了更大的空间。
Objective
2
The basin of attraction determines the global stability of passive walking robots
yet its narrow morphology poses tremendous challenges to the stable walking of robots in real environments. To address this issue
an investigation was conducted on the external topological structure of the basin of attraction for passive walking robots on rough terrain.
Methods
2
Firstly
a dynamic model of a point-foot robot walking on rough terrain was established. Secondly
the gait variation and global stability of the robot were explored using phase diagrams
Poincaré section diagrams and basins of attraction
with a focus on investigating the influence of external environmental factors on the system’s basin of attraction and conducting a classified analysis of its external topological structure. Finally
the walking gait corresponding to the stable limit cycle was verified via simulation on Adams software.
Results
2
The results show that the external topological structure of the basin of attraction exhibits fractal characteristics
among which the region where the robot can walk at least one step accounts for 41.28% of the entire state space. The introduction of pavement environmental disturbances leads to a reduction in the area of the basin of attraction
but has a minor impact on its external topological structure of the basin of attraction. The research results expand the applicable scope of the passive walking theory and provide a larger space for the selection of initial gait conditions.
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