LQ optimal actuator location in structures
LQ optimal actuator location in structures
复制标题
LQ 结构中的最佳执行器位置
DOI：
10.1109/acc.2012.6314992
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Khajepour
中科院分区：
文献类型：
--
作者：
Neda Darivandi;K. Morris;A. Khajepour
压电致动器已被证明是有用的，在柔性结构中的干扰抑制。为了获得最有效的控制系统，压电元件的位置以及反馈增益应该被优化。在本文中，反馈增益被选为最优线性二次型调节器。基于一个重新制定的最佳执行器位置作为一个凸优化问题，一个基于子梯度的优化方案，导致问题的全局解决方案被用来优化执行器的位置。在多个示例中，致动器位于结构中的高应变能点处。
Piezoelectric actuators have proven to be useful in suppression of disturbances in flexible structures. In order to obtain the most efficient control system, the locations of the piezoelectric elements as well as the feedback gain should be optimized. In this paper, the feedback gain is chosen to be the optimal linear quadratic regulator. Based on a reformulation of optimal actuator location as a convex optimization problem, a subgradient-based optimization scheme which leads to the global solution of the problem is used to optimize actuator locations. In a number of examples, actuators are located at points of high strain energy in the structure.