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六轮腿式机器人结构设计与运动模式分析 被引量:32

Structure design and motion mode analysis of a six wheel-legged robot
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摘要 复合运动模式机器人是移动机器人研究的热点之一。轮腿复合式机器人综合了轮式机器人的快速性和腿式机器人的灵活性,能更好地适应复杂地面环境。设计了一种圆周对称的六轮腿式机器人,其新型的轮腿组合方式使其在不增加多余驱动的基础上,通过改变自身构态实现轮腿运动模式的切换,降低了结构的复杂性,避免了轮子当作足在行走过程中磨损造成的不良影响。给出4种典型"3+3"三角周期步态和不同步态行走过程中的等效机构,建立了单腿正运动学和逆运动学模型,分析了不同步态间切换过程。根据机器人的特殊轮腿结构进行了轮腿运动模式切换规划,并分析了轮式运动和轮行过程中的转向问题,建立了4种轮行转弯运动学模型。通过轮腿式机器人样机试验,验证了其步行运动、轮行运动以及不同运动模式切换的能力。 The research of hybrid locomotion robot has become one of the hottest spots of mobile robots.Wheel-legged robot which combines the advantages of wheeled robot and legged robot can be better adapted to complex environment. A new combination between wheels and legs is proposed and a new circumferential symmetry wheel-legged robot is designed. It can transit its locomotion mode by changing its configuration. Meanwhile,it reduces mechanism complication and avoids the fray of wheels while they are used as feet in legged motion mode. Because of its special structure,four typical "3 + 3"tripod gaits and the equivalent mechanisms in different walking gaits processes are presented and transition between them is analyzed. The forward and inverse kinematics models of single leg are built. Based on its structure,planning of motion mode transition from wheeled motion mode to legged motion mode and from legged motion mode to wheeled motion mode is given and simulated in software. Its wheeled motion mode and steering problem are analyzed and illustrated,and four steering models are built. Some tests with wheel-legged robot prototype are made to verify its ability of locomotion both in legged mode and wheeled mode and its capability of transition between different motion modes.
出处 《北京航空航天大学学报》 EI CAS CSCD 北大核心 2016年第1期59-71,共13页 Journal of Beijing University of Aeronautics and Astronautics
基金 国家杰出青年科学基金(51125020) 国家自然科学基金(51305009) 机器人技术与系统国家重点实验室开放研究基金 CAST创新基金~~
关键词 轮腿式机器人 结构设计 运动学 步态 运动模式 wheel-legged robot structure design kinematics gait motion mode
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