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拉索结构系统在外部激励下作用下将产生低频谐振,会导致大的振幅而可能有破坏性事故发生,故需要一种有效的方法控制这种振动。而在拉索的锚座处沿拉索轴向实施主动控制却是一种很好的方法。本文在考虑拉索抗弯刚度的基础上,建立了拉索振动主动控制模型。通过线性二次型最优控制(LQR)策略对拉索振动实施了主动控制仿真计算,分析了抗弯刚度对拉索振动主动控制的影响,使该控制方法更适合在工程实际中应用。
The cable structure system will generate low-frequency resonance under the action of external excitation, which will result in large amplitude and may cause destructive accidents. Therefore, an effective method is needed to control this vibration. It is a good idea to implement active control along the cable’s axial direction at the cable anchor’s seat. In this paper, considering the flexural rigidity of cable, an active vibration control model of cable is established. The linear quadratic optimal control (LQR) strategy was used to carry out the active control simulation calculation of the cable vibration. The influence of the flexural rigidity on the active vibration control of the cable was analyzed, and the control method was more suitable for practical application in engineering.