| Citation: | PENG Miaojiao, WU Huisong, LIN Qi, et al. Dynamic characteristics of wire-driven parallel robot with wire damping[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(2): 304-313. doi: 10.13700/j.bh.1001-5965.2019.0205(in Chinese)
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To actualize the design requirement of a wire-driven parallel robot applied as the model support in wind tunnel tests, the influence of wire damping on the dynamic characteristics of the wire-driven parallel robot was studied by combining experimental and theoretical modeling methods. Firstly, in order to describe the wire damping accurately and quantitatively, a set of experimental devices was designed to measure the wire damping ratio under different parameters. Secondly, considering the wire damping, the wire tension was modeled and the motion equation of the wire-driven parallel robot was established. Finally, the influence of wire damping on the dynamic characteristics of the wire-driven parallel robot was analyzed. The results show that wire damping mainly affects the amplitude response of the wire-driven parallel robot. The larger the diameter of the wire is, the more obvious the effect of wire damping on the vibration reduction of the wire-driven parallel robot is. When the wire damping coefficient is greater than 0.6 N·s/m, the influence of wire damping on the dynamic characteristics of the wire-driven parallel robot cannot be neglected, regardless of the diameter of the wire.The research results can provide theoretical guidance for the design of the wire-driven parallel robot.
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