TRAC-IK和Orocos KDL类似,也是一种基于数值解的机器人运动学求解器,但是在算法层面上进行了很多改进(Specifically, KDL’s convergence algorithms are based on Newton’s method, which does not work well in the presence of joint limits — common for many robotic platforms. TRAC-IK concurrently runs…
KDL(Kinematics and Dynamics Library)中定义了一个树来代表机器人的运动学和动力学参数,ROS中的kdl_parser提供了工具能将机器人描述文件URDF转换为KDL tree. Kinematic Trees: 链或树形结构.已经有多种方式来定义机构的运动学结构,KDL使用图论中的术语来定义: A closed-loop mechanism is a graph, 闭链机构是一幅图 an open-loop mechanism is a tree, 开链机构是…
Wheeled mobile robots may be classified in two major categories, omnidirectional and nonholonomic. Omnidirectional mobile robots have no equality constraints on the chassis velocity $\dot{q}=(\dot{\phi},\dot{x},\dot{y})$ Omnidirectional wheeled mobil…
IK groups and IK elements VREP中使用IK groups和IK elements来进行正/逆运动学计算,一个IK group可以包含一个或者多个IK elements: IK groups: IK groups group one or more IK elements. To solve the kinematics of a simple kinematic chain, one IK group containing one IK element is need…