中国机械工程 ›› 2021, Vol. 32 ›› Issue (18): 2246-2253.DOI: 10.3969/j.issn.1004-132X.2021.18.014

• 智能制造 • 上一篇    下一篇

直驱式四足机器人的结构优化设计与研究

刘明源1,2;陈平1;马建设2   

  1. 1.北京科技大学机械工程学院,北京,100083
    2.清华大学深圳国际研究生院,深圳,518055
  • 出版日期:2021-09-25 发布日期:2021-10-14
  • 通讯作者: 陈平(通信作者),女,1973年生,教授、博士研究生导师。研究方向为机械设计及理论、摩擦磨损与系统工程。发表论文30余篇,出版专著一部。E-mail:chenp@ustb.edu.cn。
  • 作者简介:刘明源,男,1997年生,硕士研究生。研究方向为工业机器人、紫外通信、光存储。
  • 基金资助:
    国家重点研发计划(2018YFC0810500)

Structural Optimization Design and Research of Direct-drive Quadruped Robots

LIU Mingyuan1,2;CHEN Ping1;MA Jianshe2   

  1. 1.School of Mechanical Engineering,University of Science and Technology Beijing,Beijing,100083
    2.Shenzhen International Graduate School,Tsinghua University,Shenzhen,518055
  • Online:2021-09-25 Published:2021-10-14

摘要: 设计了一种直驱式四足机器人。基于弹簧倒立摆模型建立了腿部刚度特性模型,分析了腿部杆长比、姿态角与刚度特性的关系,讨论了杆长比对能量利用效率的影响。对五杆同轴腿进行正向运动学和逆向运动学的分析,推导出位置控制算法模型,并利用雅可比矩阵推导出腿部驱动电机输入电流与足端受力的关系。对搭建的直驱式四足机器人进行奔跑实验和跳跃实验,验证了该机器人结构设计的合理性。

关键词: 移动机器人, 空间连杆机构, 姿态角, 位置控制

Abstract: A direct-drive quadruped robot was proposed, and the leg stiffness characteristic model was established based on the spring inverted pendulum model, then the relationship among leg length ratio, attitude angle, and stiffness characteristics was analyzed. The influences of pole length ratio on energy utilization efficiency were discussed. Forward kinematics and inverse kinematics of the five-bar coaxial leg were analyzed, and the position control algorithm model was derived. The relationship between input current of leg drive motor and force on the foot was derived by Jacobian matrix. Running experiments and jumping experiments were carried out on the direct-drive quadruped robot, and the experiments verified the rationality of structural design for the robot. 

Key words: mobile robot, spatial linkage mechanism, attitude angle, position control

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