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The reduction approaches are presented for vibration control of symmetric, cyclic periodic and linking structures. The condensation of generalized coordinates, the locations of sensors and actuators, and the relation between system inputs and control forces are assumed to be set in a symmetric way so that the control system posses the same repetition as the structure considered. By employing proper transformations of condensed generalized coordinates and the system inputs, the vibration control of an entire system can be implemented by carrying out the control of a number of sub-structures, and thus the dimension of the control problem can be significantly reduced. 相似文献
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智能板振动控制的分布压电单元法 总被引:25,自引:1,他引:25
提出了一个用于振动控制的分布压电单元法,该方法中采用将分布压电传感器和致动器分割成若干相互独立的单元的方法,来设计压电模态传感器与压电模态致动器.压电模态传感器所观测的模态坐标和模态速度,可从各传感单元的输出电荷及电流中提取出来;而压电模态致动器则通过调制施加于其上的电压的空间分布来实现.在此基础上对智能板进行了模态控制 相似文献
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用两种功能材料综合控制智能梁的振动 总被引:3,自引:0,他引:3
给出了用两种材料对梁进行振动控制的综合控制方法。采用多层分布压电层进行精密主动控制时,将压电传感层和压电致动层分割成若干单元来设计压电模态传感器和压电模态致动器,进而实现了梁的模态控制,同时利用形状记忆合金的超弹性特性对梁进行被动控制来抑制梁的大振幅振动,取得了很好的控制效果。 相似文献
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