In this paper, kinematic and workspace analysis of 3-DoF planar Parallel Kinematic Machine (PKM) is carried out. The mechanism consists of three legs in which two legs have Prismatic-RevolutePrismatic joints and other leg has Prismatic-Prismatic-Revolute joints, it termed as 2-PRP and 1-PPR planar parallel kinematic machine. By these joints, the mechanism can achieve two translational motions a...

This paper addresses an interval analysis based study that is applied to the design and the comparison of three-degrees-of-freedom (3-DoF) parallel kinematic machines. Two design criteria are used: (i) a regular workspace shape and (ii) a kinetostatic performance index that needs to be as homogeneous as possible throughout the workspace. The interval analysis based method takes these two criter...

In 2001, Kevin Baker adapted the heuristic evaluation methodology to find usability problems in real-time, shared workspace groupware systems [1]. Real-time, shared workspace groupware systems support real-time collaboration between distance-separated people through a shared workspace – “a medium sized flat work surface where people collaborate by manipulating visible tools and task artefacts” ...

In this paper, a kinematically redundant parallel haptic device with large workspace is presented. The haptic device has a similar kinematic structure to the well‐ known Delta manipulator. However, it has a special arrangement of actuators and one redundant actuator added to the third leg. The proposed haptic device has essentially 4‐DOF, however, only three tra...

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In this paper the workspace optimization of translational 3-UPU parallel platforms with prismatic and universal joint constraints is performed. The workspace is parameterized using two design parameters, which are the prismatic joint stroke and the difference between the distances of the center to one of the corners of the triangular plate of the base and of the moving platform. For a large ran...

Workspace awareness as the "... up-to-the-moment understanding of another person’s interaction with a shared workspace" [GuGr 99] involves knowledge on who is working in the workspace, where individuals are working, what they are doing or going to do, how and when they are executing their work, and what their motivation is for doing it (why). Traditional awareness systems use dynamic user behav...