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Optimal discrete piezoelectric patch allocation on composite structures for vibration control based on GA and modal LQR

机译:基于GA和模态LQR的复合材料振动控制最优离散压电片分配。

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摘要

The optimization of piezoelectric patches allocation in composite structures is analysed in this paper. The finite element method and a linear quadratic regulator are used to study the electro-mechanical behaviour and the gain calculation. Due to the discrete nature of the problem, a simple binary Genetic algorithm is used as an optimization tool. Three examples are presented related to the optimal allocation based on Lyapunov functional. The PSD (Power Spectral Density) of the state space variables as well as input voltages are presented in order to identify the controlled modes and to show the effective attenuation obtained due to control of specific modes.
机译:分析了复合结构压电贴片的优化配置。使用有限元方法和线性二次调节器来研究机电行为和增益计算。由于问题的离散性,使用简单的二进制遗传算法作为优化工具。给出了三个与基于Lyapunov函数的最优分配有关的例子。提供状态空间变量的PSD(功率谱密度)以及输入电压,以识别受控模式并显示由于控制特定模式而获得的有效衰减。

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