针对目前工业机械臂不适用于广泛的教育行业和不开源的现状,设计出了一种结构简单、低成本、可靠性高的机械臂系统。采用Raspberry Pi 3B+搭载机器人操作系统(ROS)作为主控系统的核心,通过Rviz可视化工具显示机械臂三维模型,使用Moveit...针对目前工业机械臂不适用于广泛的教育行业和不开源的现状,设计出了一种结构简单、低成本、可靠性高的机械臂系统。采用Raspberry Pi 3B+搭载机器人操作系统(ROS)作为主控系统的核心,通过Rviz可视化工具显示机械臂三维模型,使用Moveit完成轨迹规划。引入转速、电流双闭环调速系统,提高了六轴机械臂的稳定性。轻量化机械臂实验平台的实现,降低了系统复杂度,实现了控制系统的可移植性,使控制方式变得简单。实验结果表明:搭载ROS的轻量化机械臂不仅控制简单而且可稳定地完成动作。展开更多
This paper proposes a novel modular cable-driven humanoid arm with anti-parallelogram mechanisms(APMs)and Bowden cables.The lightweight arm realizes the advantage of joint independence and the rational layout of the d...This paper proposes a novel modular cable-driven humanoid arm with anti-parallelogram mechanisms(APMs)and Bowden cables.The lightweight arm realizes the advantage of joint independence and the rational layout of the driving units on the base.First,this paper analyzes the kinematic performance of the APM and uses the rolling motion between two ellipses to approximate a pure-circular-rolling motion.Then,a novel type of one-degree-of-freedom(1-DOF)elbow joint is proposed based on this principle,which is also applied to design the 3-DOF wrist and shoulder joints.Next,Bowden cables are used to connect the joints and their driving units to obtain a modular cable-driven arm with excellent joint independence.After that,both the forward and inverse kinematics of the entire arm are analyzed.Last,a humanoid arm prototype was developed,and the assembly velocity,joint motion performance,joint stiffness,load carrying,typical humanoid arm movements,and repeatability were tested to verify the arm performance.展开更多
文摘针对目前工业机械臂不适用于广泛的教育行业和不开源的现状,设计出了一种结构简单、低成本、可靠性高的机械臂系统。采用Raspberry Pi 3B+搭载机器人操作系统(ROS)作为主控系统的核心,通过Rviz可视化工具显示机械臂三维模型,使用Moveit完成轨迹规划。引入转速、电流双闭环调速系统,提高了六轴机械臂的稳定性。轻量化机械臂实验平台的实现,降低了系统复杂度,实现了控制系统的可移植性,使控制方式变得简单。实验结果表明:搭载ROS的轻量化机械臂不仅控制简单而且可稳定地完成动作。
基金supported by the National Natural Science Foundation of China (Grant Nos.51905105 and 51975126)the Natural Science Foundation of Guangdong Province,China (Grant No.2020A1515011262)+2 种基金the Program for Guangdong Yangfan Innovative and Entrepreneurial Teams,China (Grant No.2017YT05G026)the Young Elite Scientists Sponsorship Program by CAST,China (Grant No.2021QNRC001)the Fund of Science and Technology Innovation and Cultivation for Guangdong Undergraduates,China (Grant No.pdjh2021b0157).
文摘This paper proposes a novel modular cable-driven humanoid arm with anti-parallelogram mechanisms(APMs)and Bowden cables.The lightweight arm realizes the advantage of joint independence and the rational layout of the driving units on the base.First,this paper analyzes the kinematic performance of the APM and uses the rolling motion between two ellipses to approximate a pure-circular-rolling motion.Then,a novel type of one-degree-of-freedom(1-DOF)elbow joint is proposed based on this principle,which is also applied to design the 3-DOF wrist and shoulder joints.Next,Bowden cables are used to connect the joints and their driving units to obtain a modular cable-driven arm with excellent joint independence.After that,both the forward and inverse kinematics of the entire arm are analyzed.Last,a humanoid arm prototype was developed,and the assembly velocity,joint motion performance,joint stiffness,load carrying,typical humanoid arm movements,and repeatability were tested to verify the arm performance.