In this paper the authors review spherical motion generation by means of parallel
manipulators or spherical motors. The state-of-the-art of spherical-motion-generator …

Parallel robots are closed-loop mechanisms presenting very good performances in terms of
accuracy, velocity, rigidity and ability to manipulate large loads. They have been used in a …

The theory of reciprocal screws is used for the enumeration of the feasible limb structures of
a class of 3-degree-of-freedom (DOF) rotational parallel manipulators. Geometric conditions …

Most fully-parallel manipulators encountered today have a common disadvantage, ie, their
low rotational capability. To overcome such a difficulty, this paper focuses its attention on the …

The concept of a medical parallel robot applicable to chest compression in the process of
cardiopulmonary resuscitation (CPR) is proposed in this paper. According to the …

A parallelogram allows the output link to remain at a fixed orientation with respect to an input
link, for which it acts as a unique role in the design of parallel mechanisms. In this paper, the …

A novel family of extendable kinematic chains, termed dual scissor-like mechanisms (D-
SLiM), is proposed in this paper. The chains, which generally have two translational degrees …

In this work, the kinematics and singularity analyses of a four degrees of freedom parallel
manipulator are investigated using the theory of screws. As an initial step, the forward …

This paper presents a new symmetric parallel Schönflies-motion generator. The design is an
evolution of a previous robot with linear inputs. The complete kinematic analysis of the 4 …

A tape spring is a thin-walled open cylindrical structure with a natural transverse curvature.
The localized folds in the tape spring serve as revolute joints, and the unfolded straight …