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A computational scheme for the optimal sensor/actuator placement of flexible structures using spatial H_2 measures

机译:使用空间H_2量度的柔性结构传感器/执行器最佳放置位置的计算方案

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This paper develops a spatial H_2 norm-based computational scheme for finding the optimal locations of sensors and actuators in controlled flexible structures. As the optimization index, the spatial H_2 norm of the closed-loop transfer matrix from the disturbance to the distributed controlled output is used. The design of the optimal spatial H_2 controller is based on the reduced model of the flexible structure, which contains the dominant modes that have the largest contribution to the system's spatial H_2 norm. The proposed genetic algorithm (GA) is subsequently used to solve the resulting nonlinear optimization problem. The effectiveness of the proposed scheme is demonstrated by a numerical example on the vibration control of a plate structure. Simulation results also show that the spatial H_2 norm is a better performance index to be used in the structural vibration control when the vibration reduction is required over a continuous area on the structure.
机译:本文开发了一种基于空间H_2范式的计算方案,用于在受控柔性结构中寻找传感器和执行器的最佳位置。作为优化指标,使用了从干扰到分布式控制输出的闭环传递矩阵的空间H_2范数。最佳空间H_2控制器的设计基于柔性结构的简化模型,该模型包含对系统的空间H_2范式贡献最大的主导模式。所提出的遗传算法(GA)随后用于解决由此产生的非线性优化问题。通过数值示例对板结构进行振动控制,证明了该方案的有效性。仿真结果还表明,当需要在结构的连续区域进行减振时,空间H_2范数是用于结构振动控制的较好性能指标。

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