Optimal Kinematic Design of a 6-UCU Kind Gough-Stewart Platform with a Guaranteed Given Accuracy

Optimal Kinematic Design of a 6-UCU Kind Gough-Stewart Platform with a Guaranteed Given Accuracy

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The 6-UCU (U-universal joint; C-cylinder joint) kind Gough-Stewart platform is extensively employed in motion simulators due to its high accuracy, large payload, and high-speed capability.However, because of the manufacturing and assembling errors, the real jolly rancher filled gummies geometry may be different from the nominal one.In the design process of the high-accuracy Gough-Stewart platform, one needs to consider these errors.The purpose of this paper is to propose an optimal design method for the 6-UCU kind Gough-Stewart platform with a guaranteed given accuracy.

Accuracy analysis of the 6-UCU kind Gough-Stewart platform is presented by considering the limb length errors and joint position errors.An optimal design method is proposed by using a multi-objective verona wig evolutionary algorithm, the non-dominated sorting genetic algorithm II (NSGA-II).A set of Pareto-optimal parameters was found by applying the proposed optimal design method.An engineering design case was studied to verify the effectiveness of the proposed method.