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Given non-negative integers r, s, and t, an [r, s, t]-coloring of a graph G = (V (G), E(G)) is a mapping f from V(G) ∪ E(G) to the color set{0, l, 2, · · ·, k − 1} such that |f (Vi) − f(Vi)| ≥ r for every two adjacent vertices Vi, Vj, |f(ei) − f (ej)|≥ S for every two adjacent edges ei, ej, and |f(νi) −f(ej)|≥ t for all pairs of incident vertices and edges, respectively. The [r, s, t]-chromatic number...
In this paper, kinematic analysis of the 5-PPaPaU parallel mechanism with parallelogram loops was presented. Based on the analysis on the DOF of the mechanism, the prismatic joints placed on the base were chose as actuators. The singularity configuration of the mechanism was researched. The successive transformation matrixes were derived, and then the inverse kinematic equations and direct kinematic...
A virtual prototype model of wall finishing robot is developed and the force situation in the working process has been analyzed. Applying SolidWorks and its CAE packages, operating characteristics under the real project condition are shown by simulation analysis so as to provide a reliable basis for the design and manufacture of the prototype.
It is difficult to obtain analytical solution to forward kinematics for parallel mechanism, and the speed of the solution based on conventional numerical solution method is lower, and hard to achieve real-time performance in motion control. In this paper, in order to avoid the two problems, a continuous on-line estimation algorithm was proposed to approach the forward kinematics analytical solution...
As the link and bridge of the whole electrical system, airplane wiring harness provides power and communication support to the electronic equipment and has an important impact on airplane performance and safety. Airplane wiring harness is not only the last step in the electrical design, but also in the early part of the assembly, so all the complexity of the connection determines its manual mode of...
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