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一个自由端部带有充液容器的压电悬臂结构系统用来研究机翼油箱结构系统振动特性主动控制,控制设计需要精确的建模。利用有限元方法对带有充液容器的压电悬臂结构进行模态分析并推导出其模型状态空间表达式。其中,通过实验对有限元法得出的相关建模参数进行了验证,从而表明建立的带有充液容器的压电悬臂结构系统振动特性模型的准确性及其状态空间表达式可用于控制设计。
A free-end piezoelectric cantilever system with a liquid-filled vessel was used to study the active control of the vibration characteristics of the wing tank system, and the control design required accurate modeling. The finite element method is used to analyze the piezoelectric cantilever structure with liquid-filled container and to derive the model state space expression. The relevant modeling parameters obtained by the finite element method are validated by experiments, which shows that the accuracy of the vibration model of the piezoelectric cantilever structure system with liquid filled container and its state space expression can be used to control the design .