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研究利用压电主动构件实现智能桁架结构振动阻尼控制的技术。控制策略采用局部积分力和局部速度复合反馈,将测量的压电主动构件弹性内力和两端节点的相对速度,经控制器放大复合后得到压电主动构件的驱动电压,实现智能桁架结构阻尼控制的目的。这种控制方法具有良好的稳定性和鲁棒性。通过一个空间桁架结构的振动阻尼控制实验,结果表明该控制方法是有效的。
Research on the technology of using the piezoelectric active components to realize the vibration damping control of intelligent truss structure. The control strategy adopts the composite feedback of local integral force and local velocity to obtain the elastic voltage force of the piezoelectric active component and the relative velocity of the nodes at both ends. The driving voltage of the piezoelectric active component is amplified and amplified by the controller to realize intelligent truss structure damping control the goal of. This control method has good stability and robustness. Through a vibration damping control experiment of a space truss structure, the results show that the control method is effective.