Parallel operations of Triport UPS systems.

COORDINATE INFLUENCE ON SINGULARITY OF A 3-UPS PARALLEL MANIPULATOR

This paper shows the coordinates influence on singularity of a three degree-of-freedom structure, namely, three-Universal-Prismatic-Spherical (3-UPS) parallel manipulator. Rotational coordinates, which are chosen to define the orientation of the platform, affect the singularity of the manipulator. Euler parameters, which don't have any inherent geometrical singularity are utilized, however they...

Ageing Orders of Series-Parallel and Parallel-Series Systems with Independent Subsystems Consisting of Dependent Components

In this paper, we consider series-parallel and parallel-series systems with independent subsystems consisting of dependent homogeneous components whose joint lifetimes are modeled by an Archimedean copula. Then, by considering two such systems with different numbers of components within each subsystem, we establish hazard rate and reversed hazard rate orderings between the two system lifetimes,...

Kinematic and Dynamic Analysis of 6-UPS Parallel Robot

ABSTRACT: Kinematics and dynamics analysis of a 6-DOF parallel robot is performed. The mechanism of this parallel robot is composed of a moving platform and a static platform, the platform are linked by 6-UPS branched chains. The position and pose of the robot moving platform are totally described by 6 variables, including 3 displacement and 3 angles of a reference point on the platform. Firstl...

Scans as Primitive Parallel Operations

AbstmctIn most parallel random access machine (PRAM) models, memory references are assumed to take unit time. In practice, and in theory, certain scan operations, also known as prefix computations, can execute in no more time than these parallel memory references. This paper outlines an extensive study of the effect of including, in the PRAM models, such scan operations as unit-time primitives....

Modular architecture for high power UPS systems