Methods a device that measures the three-dimensional motion and stiffness of the cervical spine in vivo was designed according to 3-dimensional 6-degree of freedom motion principle of spine.
方法：根据脊柱3轴6自由度运动原理，制作活体颈椎三维运动和刚度测试装置。
It is proved that the 3-rps pyramid mechanism also has the three-dimensional CARDAN motion and the kinematic trajectory is an ellipse cluster.
文中分析、证明了3 -RPS并联角台机构能实现空间三维卡当运动，其三维卡当运动在空间的运动轨迹为三坐标方向的椭圆簇。
Results. For kinematic evaluation, the rotation of motion segment unit, coupling behaviors, and 3-dimensional helical axes of motion were analyzed.
结果：对运动学评价，分析了运动单元的旋转、耦合现象和三维运动螺旋轴。
Aimed at the situation lack of efficient analysis tool in the study of the industrial robots executor motion, a new method, the complex index form of the 3 dimensional vectors, is put forward.
针对目前在工业机器人的执行机构运动研究中，缺少高效的分析方法的现状，本文提出了一种新方法——三维矢量的复指数形式并探讨了应用该法表示三维矢量的坐标变换形式及其导数形式。
Aimed at the situation lack of efficient analysis tool in the study of the industrial robots executor motion, a new method, the complex index form of the 3 dimensional vectors, is put forward.
针对目前在工业机器人的执行机构运动研究中，缺少高效的分析方法的现状，本文提出了一种新方法——三维矢量的复指数形式并探讨了应用该法表示三维矢量的坐标变换形式及其导数形式。
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