This paper presents the results of a systematic study of the singular configurations of 3-DOF planar parallel mechanisms with three identical serial chains. Only prismatic and revolute kinematic pairs are considered. From the point of view of singularity analysis, there are ten different architectures. All of them are examined; the nature of all possible singular configurations are discussed an...

The significant advantages of parallel robots over serial manipulators are now well known. However, they still pose a serious challenge when considering their kinematics. This paper covers the state-of-the-art on modeling issues and certified solving of kinematics problems. Parallel manipulator architectures can be divided into two categories: planar and spatial. Firstly, the typical planar par...

The wrench-closure workspace of parallel cable-driven mechanisms is the set of poses for which any wrench can be produced at the end-effector by a set of a non-negative cable tensions. It is already known that the boundary of the constant-orientation wrench-closure workspace of a planar parallel cable-driven mechanism is composed of segments of conic sections. Howevel; the relationship between ...

In this paper, a systematic methodology for enumeration of the kinematic structures of parallel manipulators is presented. Parallel manipulators are classified into planar, spherical, and spatial mechanisms. The classification is followed by an enumeration of the kinematic structures according to the degrees of freedom and connectivity listing. In particular, a class of parallel manipulators wi...

this paper presents the kinematic analysis and the development of a 4-degree-of-freedom serial-parallel mechanism for large commercial vehicle driving simulators. the degrees of freedom are selected according to the target maneuvers and the structure of human motion perception organs. several kinematic properties of parallel part of the mechanism under study are investigated, including the inve...