Study on non - constancy of motion - transmitting characteristics of a mechanical joint 万向节运动传递非等速特性研究
Adopting the form closure error and the motion transmission error of sine curve to carrying out theoretical analysis of this cam mechanism 对该凸轮机构采用正弦曲线的形封闭误差和运动传递误差进行了理论分析。
As the study basis of the micromanipulator the kinematics of the micromanipulator is analyzed firstly and the characteristic of the micromanipulator is taken into a full consideration . through proper abstraction and simplication the jacobian matrix is introduced which reflects the characteristic of the movement transmission , and such a matrix is constant 作为研究微动机器人的基础,论文首先分析了微动机器人运动学,充分考虑微动机器人的特点,经过合理的抽象简化,推导出反映其运动传递特性的雅克比矩阵,该矩阵是一常数矩阵。
2 . dynamics analysis : by setting up jacon matrix differential coefficient sport is passed to descartes space . it makes terminal executing manipulator produce differential coefficient of acceleration and force in every different coordinates can be got . then the effective inertia , coincident inertia and gravity load of two manipulators are calculated by lagrange method . so generalized joint torque of each joint is got , and along with equivalent driving torque , actual driving torque of each joint can be worked out . 3 动力学分析:建立雅可比矩阵将关节空间的各关节的微分运动传递到笛卡尔空间,使末端执行器位姿产生微分运动,以用于求加速度及力在不同坐标系间的线性变换,再用拉格朗日法计算两机械手的有效惯量、偶合惯量、重力载荷,从而计算得到各关节的广义关节力矩,并与等效驱动力矩共同算得各关节的驱动力矩。