Nonlinear Control Of Flexural-Torsional Vibrations Of A Rotating Thin-Walled Composite Beam
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS(2017)
摘要
In this paper, the effiectiveness of a saturation control strategy in suppressing vibration of a rotating composite thin walled beam is studied. The mathematical model of the fiexible beam takes into account a shear deformation erect, a warping function, a centrifugal force and the Coriolis acceleration. To extend the generality of the proposed formulation an inertia of the hub is also considered. Adaptive capability of the beam is achieved through the implementation of the saturation control algorithm.Within the performed tests, the discussed control strategy is applied for different magnitudes of flexural-torsional vibration modes resulting from different orientations of beam laminate-reinforcing fiber's. The obtained results prove the applied nonlinear control to be the effective method for beam vibration suppression in near-by resonance zones for all studied cases. Parametric studies considered different rotating speeds of the system. It is shown that the vibration of the beam can be suppressed to similar levels independently of the transportation motion rotating speed. However, significant differences in the width of vibration suppression zones are observed.
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关键词
Saturation control, rotating beam, vibration suppression, composite beam
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