A novel three degrees of freedom partially decoupled robot with linear actuators

(2012). A novel three degrees of freedom partially decoupled robot with linear SUMMARY In this work, a new translational robot formed with two different parallel manipulators with a common control point is introduced. An asymmetric parallel manipulator provides three translational degrees of freedom to the proposed robot while the orientation of the end-effector platform is kept constant by means of a Delta-like manipulator. An exact solution is easily derived to solve the forward displacement analysis while a semi-closed form solution is available for solving the inverse displacement analysis. The infinitesimal kinematics of the robot is approached by applying the theory of screws. Finally, a numerical example that consists of solving the inverse/forward displacement analysis as well as the forward acceleration analysis of the end-effector platform is presented. The example also includes the computation of the workspace and the direct/inverse singularities of the example. 1. Introduction Parallel manipulators with fewer than six degree of freedom have a wide range of applications, including assembly, machining, micro robotics, and medical applications. Therefore, in spite of a limited mobility, they have gained an increasing interest in research as well as in industry. Fruitful results have been obtained in this trend, for details visit the website.