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首页> 外文期刊>Journal of aerospace engineering >Integrated Optimization of Control System for Smart Cylindrical Shells Using Modified GA
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Integrated Optimization of Control System for Smart Cylindrical Shells Using Modified GA

机译：基于改进遗传算法的智能圆柱壳控制系统集成优化

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摘要

In this paper, modeling of the vibration of cylindrical shell components of space structures incorporating piezoelectric sensor/actuators (S/As) for optimal vibration control is proposed and formulated The parameters of the control system, which include the placement and sizing of the piezoelectric S/As and the feedback control gains, were considered as design variables and optimized simultaneously The effect of the amount of piezoelectric patches was investigated as well The criterion based on the maximization of energy dissipation was employed for the optimization of the control system A modified real-encoded genetic algorithm (GA) dealing with various constraints has been developed and applied to search for the optimal placement and size of the piezoelectric patches as well as the optimal feedback control gains The results of three numerical examples, which include a simply supported plate, a simply supported cylindrical shell, and a clamped-simply supported plate, demonstrated significant vibration suppression based on the optimal design of the control system It was also found that for specific controlled vibration modes, the optimal distribution of the piezoelectric S/As should be located at the areas separated by the nodal lines to achieve the optimal control effect This finding would be useful for the practical design of smart structures
机译：在本文中，提出并制定了空间结构的圆柱壳部件的振动建模，该结构结合了压电传感器/执行器（S / As）以实现最佳振动控制。控制系统的参数，包括压电S的放置和尺寸/ As和反馈控制增益被视为设计变量，并同时进行了优化。还研究了压电贴片数量的影响。基于能量耗散最大化的准则用于控制系统的优化。已开发出可处理各种约束的编码遗传算法（GA），并将其应用于搜索压电贴片的最佳位置和大小以及最佳反馈控制增益。三个数值示例的结果包括一个简单支撑的板，一个简单支撑的圆柱壳和一个夹紧的简单支撑板，显示出标志基于控制系统的最佳设计来进行有效的振动抑制还发现，对于特定的受控振动模式，压电S / As的最佳分布应位于节点线分隔的区域，以实现最佳控制效果。的发现对于智能结构的实际设计将是有用的

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