This paper presents the fomulation of the inverse kinematics and dvnamics of the1 3-RRS parallel platform with three degrees of freedom. For inverse kinematics, The position analysis is f irs f ly performed. Then the differential motion constraint vquations of the movable platform are established, based on which the velocity and acceleration formulae of leg actuators are derived. In inverse dyn...

This paper discusses the three-dimensional kinematics and kinetics of a golf swing as performed by 84 male and one female amateur subjects of various skill levels. The analysis was performed using a variable full-body computer model of a human coupled with a flexible model of a golf club. Data to drive the model was obtained from subject swings recorded using a multi-camera motion analysis syst...

Despite the huge progress made in interactive physics-based mesh deformation, manipulating a geometrically complex mesh or posing a detailed character is still a tedious and time-consuming task. Example-driven methods significantly simplify the modeling process by incorporating structural or anatomical knowledge learned from example poses. However, these approaches yield counter-intuitive, non-...

The present paper studies Plücker coordinates for line elements in Euclidean three-space. The well known relation between line geometry and kinematics is generalized to equiform motions and the geometry of line elements. We consider bundles and linear complexes of line elements and survey their properties. MSC 2000: 51M30, 53A17

After writing programs for a production robot, an operator must manually teach hundreds or thousands of poses. Teaching poses is extremely time consuming and, unfortunately, periodic reteaching is necessary. The need to reteach is commonly due to: wear, repair, slight movements of workpieces, or replacement of the robot and its tools. Our experience has shown that conventional methods of adjust...

The purpose of this study was to examine the kinematic and kinetic differences of the sprint start and first two steps between faster and slower high-level sprinters. Twelve male sprinters were dichotomized according to personal best 60- and 100-m times. Each participant performed five starts under constant conditions. An eight-camera system was used for 3-D kinematic analysis. Dynamic forces a...