Antoanela Naaji, Daniela Gherghel. Trajectories and Working Space Representation for the Human Upper Limb in Motion. Scientific Bulletin of the „Politehnica” University of Timisoara, :81-86, 2005.
One of the most important applications of parametric representation of the systems is the modeling of the working space described by the end of kinematic chain during the motion. The approach to hyper-surfaces modeling is based on the direct geometric model considering the human upper limb as a kinematic structure similar to that of a robot with five degrees of freedom.