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。
应用推荐