方承, 丁希仑. 面向人臂三角形动作基元的拟人臂运动学[J]. 机器人, 2012, 34(3): 257-264. DOI: 10.3724/SP.J.1218.2012.00257
引用本文: 方承, 丁希仑. 面向人臂三角形动作基元的拟人臂运动学[J]. 机器人, 2012, 34(3): 257-264. DOI: 10.3724/SP.J.1218.2012.00257
FANG Cheng, DING Xilun. Anthropomorphic Arm Kinematics Oriented to Movement Primitive of Human Arm Triangle[J]. ROBOT, 2012, 34(3): 257-264. DOI: 10.3724/SP.J.1218.2012.00257
Citation: FANG Cheng, DING Xilun. Anthropomorphic Arm Kinematics Oriented to Movement Primitive of Human Arm Triangle[J]. ROBOT, 2012, 34(3): 257-264. DOI: 10.3724/SP.J.1218.2012.00257

面向人臂三角形动作基元的拟人臂运动学

Anthropomorphic Arm Kinematics Oriented to Movement Primitive of Human Arm Triangle

  • 摘要: 对拟人臂的运动规划问题进行了研究. 通过引入动作基元的概念,将动作基元空间作为连接任务空间与关节空间的桥梁, 构建了一个“关节空间-动作基元空间-任务空间”的三级运动规划框架. 这种规划方式既保证了对拟人臂运动过程的控制,又简化了复杂操作任务的运动规划. 在抽象的动作基元基础之上提出了一个具体的人臂三角形模型, 用以描述拟人臂的运动状态.通过引入拟人臂工作平面的概念, 利用坐标变换与几何分析相结合的方法详细推导并建立了人臂三角形空间与任务空间和关节空间之间的正逆运动学, 为基于人臂三角形的动作基元设计奠定了基础. 最后通过仿真算例验证了运动学算法的有效性与可行性.

     

    Abstract: The motion planning issue for anthropomorphic arm is discussed. A three-level motion planning framework "joint space -movement primitive space -task space" is established through introducing movement primitive as a bridge connecting the task space and the joint space. The proposed method can not only control the motion process of anthropomorphic arm, but can also simplify the motion planning of complicated operation tasks. On the basis of the abstract movement primitive, a specific human arm triangle model is proposed to describe the state of anthropomorphic arm. Through introducing the notion of the working plane of the arm, the forward and inverse kinematics among joint space, human arm triangle space, and task space are derived and established by utilizing coordinate transformation and geometric analysis. These efforts pave the way for the design of movement primitives. Finally, the validation and feasibility of the kinematics algorithms are verified by a simulation example.

     

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