论文部分内容阅读
基于结构声耦合系统的降阶模型实现了水下结构振动和声辐射的极点配置。文中的降阶模型可完全基于结构声耦合系统的振动响应通过实验来获取,可以不需要形成或知道结构的质量阵、阻尼阵、刚度阵和流体的声阻抗矩阵。以水中板结构的振动和声辐射为例使用同位的传感器/作动器布置采用输出反馈控制对流体加载下的板的固有频率和阻尼进行了配置,并对不同的控制构型进行了分析和讨论。数值模拟结果表明基于降阶模型进行水下结构振动和声辐射的极点配置是可行的。
The reduced-order model based on structural acoustic coupling system realizes the pole placement of underwater structure vibration and acoustic radiation. The reduced-order model in this paper can be obtained experimentally based solely on the vibrational response of a structural acoustic coupling system, without the need to form or know the structure’s mass matrix, damping matrix, stiffness matrix, and acoustic impedance matrix of the fluid. Taking the vibration and acoustic radiation of the water-plate structure as an example, we use the output feedback control to configure the natural frequency and damping of the plate under the fluid loading using the same-position sensor / actuator arrangement and analyze the different control configurations discuss. The numerical simulation results show that the pole placement of underwater structure vibration and acoustic radiation based on the reduced order model is feasible.