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...

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...

 Y. Yang, MS student and author of correspondence, Phone: +86-10-8233-8273, Fax: +86-10-8233-8023, Email: [email protected].  Y. Zhang, Professor and author of correspondence, Phone: +86-10-8233-8023, Fax: +86-10-8233-8023, Email: [email protected]. ABSTRACT This paper presents a procedure to obtain a singularity-free task workspace with a new method to deal with singularities. In order to ...

Malleable robots are a type of reconfigurable serial robot capable adapting their topology, through the use variable stiffness malleable links, to desired tasks and workspaces by varying relative positioning between revolute joints. However, reconfiguration is nontrivial, lacking intuitive communication human robot, method efficiently aligning end effector position. In this article, we present ...

accommodation of mechanism with human being’s physical characteristics creates the possibility of safe and efficient interaction between human being and robot. regarding the fact that amputation of a limb in human beings causes several mental, economical and social difficulties and problems, need to a substitute limb which has the most efficiency for the person after amputation is a vital need....

this work intends to deal with the optimal kinematic synthesis problem of tricept parallel manipulator. observing that cuboid workspaces are desirable for most machines, we use the concept of effective inscribed cuboid workspace, which reflects requirements on the workspace shape, volume and quality, simultaneously. the effectiveness of a workspace is characterized by the dexterity of the manip...