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The heavy-duty machine tool is usually assumed in the concrete foundation, in which the machine tool-foundation joints have a critical effect on the working accuracy and life of heavy-duty machine tool. This paper proposed a novel contact stiffness model of concrete–steel joint based on the fractal theory. The topography of contact surface exist in concrete–steel joint has a fractal feature and can...
Actuation redundancy makes it possible for parallel manipulator to optimize the driving force distribution when operating scheduled trajectory. As number of actuation exceeding its degrees of freedom, actuation coordination becomes one of the most important issues of redundantly actuated parallel manipulator. This study focuses on the driving force coordination of parallel manipulator with actuation...
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