1.重庆交通大学 机电与车辆工程学院, 重庆 400074
朱孙科(1982— ),男,浙江金华人,博士,副教授,硕士生导师,主要从事机构学与机器人学研究。
吕航(1995— ),男,辽宁朝阳人,硕士研究生,主要研究方向为变胞机构学。
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朱孙科,吕航,李伟湛等.基于图论的三构态助老变胞机构的设计与运动学分析[J].机械传动,2021,45(04):51-57.
Zhu Sunke,Hang Lü,Li Weizhan,et al.Design and Kinematics Analysis of the Three-configuration Old Helper Metamorphic Mechanism based on Graph Theory[J].Journal of Mechanical Transmission,2021,45(04):51-57.
朱孙科,吕航,李伟湛等.基于图论的三构态助老变胞机构的设计与运动学分析[J].机械传动,2021,45(04):51-57. DOI: 10.16578/j.issn.1004.2539.2021.04.009.
Zhu Sunke,Hang Lü,Li Weizhan,et al.Design and Kinematics Analysis of the Three-configuration Old Helper Metamorphic Mechanism based on Graph Theory[J].Journal of Mechanical Transmission,2021,45(04):51-57. DOI: 10.16578/j.issn.1004.2539.2021.04.009.
为了研发一款助老机器人,基于图论理论、机构的数综合,设计了一种可在2自由度、1自由度、0自由度之间切换的三构态助老变胞机构。针对变胞机构的2自由度行走构态,运用闭环矢量法进行了运动学分析,得到该变胞机构在该构态下关键位置的位移、速度、加速度等变化规律。分析结果显示,位移曲线在支撑期过渡到摆动期时位移变化较大,在步态周期的后40%内,速度、加速度均有较大变化,符合人体步态规律,表明该助老变胞机构设计是合理的。
In order to develop an old helper robot, based on the graph configuration theory and the numerical synthesis, a three-configuration old helper mechanism that can switch between 2 degrees of freedom, 1 degree of freedom, and 0 degrees of freedom is designed. Aiming at the 2-DOF walking configuration of the metamorphic mechanism, the closed-loop vector method is used to analyze the kinematics, and the displacement, velocity and acceleration of the key position of the metamorphic mechanism in this configuration are obtained. The analysis results show that, the displacement curve changes greatly when the support period transitions to the swing period, and the speed and acceleration change greatly within the last 40% of the gait cycle, which is in line with the law of human gait, indicating that the old helper mechanism design is reasonable.
运动学构态变换变胞机构图论
KinematicsStructure state transformMetamorphic mechanismGraph theory
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