Abstract：Large trusses are widely used in the navigation and aerospace fields due to their lightweight structures, high payload-weight ratios and low costs. Since trusses with large length-diameter ratios are flexible, they have vibrations due to external excitations that impact the entire system performance. A parallel cable configuration acting as an Euler-Bernoulli beam for simplified trusses was used in this study to suppress vibrations in the truss. The control method, which is a function of the cable length, was modeled in MATLAB/Simulink. Parallel cables have active and passive dynamic modes. The results show that the vibrations far from the cable attachment points are effectively reduced by the cable configuration. The cable tension suppresses the short period deformation in the passive cable mode without tension control, while the active mode with tension control suppresses the vibrations over relatively long suppression periods.
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2021, Vol. 61 
