Buoy systems are an alternative for micropowering small devices in remote locations. Portal frames are very useful to harvest the energy of the waves into usable energy. Thus, using the current models for a portal frame in the literature and the spectrum of available energy in sea waves, a nonlinear mathematical model accounting for the coupling of a nonlinear piezoelectric material is considered. The neighbour of selected variables is analyzed and then optimized by a process utilizing the particle swarm optimization (PSO) algorithm. Furthermore, an optimal control using the linear-quadratic regulator (LQR) controller is applied to control the load resistance of the piezoelectric circuit. The optimization process and the LQR show to be effective. The results show a general gain due to optimization and a relatively small gain using the controller.

中文翻译：

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在门式框架结构中使用压电材料进行海上能源收集的数值模拟和控制

浮标系统是为偏远地区的小型设备提供微动力的替代方案。门户框架对于将波浪能量收集为可用能量非常有用。因此，使用文献中的门户框架的当前模型和海浪中的可用能量谱，考虑考虑非线性压电材料耦合的非线性数学模型。对所选变量的邻居进行分析，然后通过利用粒子群优化 (PSO) 算法的过程进行优化。此外，使用线性二次调节器 (LQR) 控制器的最佳控制应用于控制压电电路的负载电阻。优化过程和 LQR 显示是有效的。结果显示了优化带来的一般增益和使用控制器的相对较小的增益。