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arXiv 2306.13331eess.SYcs.SYmath.OC
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自适应结构的能量最优控制

Energy-optimal control of adaptive structures

Manuel Schaller, Amelie Zeller, Michael Böhm, Oliver Sawodny, Cristina Tarín, Karl Worthmann

AI总结:

针对自适应结构主动阻尼中线性二次控制惩罚缺乏物理意义的问题,提出能量最优控制器,并利用端口-Hamiltonian结构证明奇异弧上的唯一性、长时间turnpike稳定性及数值有效性。

摘要:

自适应结构配备有传感器和作动器,以主动抵消风等外部载荷。与传统结构相比,这可显著降低全生命周期内的资源消耗和排放。主动阻尼的一种常用方法是推导端口-Hamiltonian模型并采用线性二次控制。然而,二次控制惩罚缺乏物理解释,仅起到正则化项的作用。为此,我们提出一种控制器,在实现振动阻尼目标的同时以能量最优方式作动。利用端口-Hamiltonian结构,我们证明即使在奇异弧上,最优控制也是唯一确定的。此外,我们借助turnpike性质证明了最优轨迹具有稳定的长时间行为。最后,通过数值研究评估了所提控制器的效率。

英文摘要:

Adaptive structures are equipped with sensors and actuators to actively counteract external loads such as wind. This can significantly reduce resource consumption and emissions during the life cycle compared to conventional structures. A common approach for active damping is to derive a port-Hamiltonian model and to employ linear-quadratic control. However, the quadratic control penalization lacks physical interpretation and merely serves as a regularization term. Rather, we propose a controller, which achieves the goal of vibration damping while acting energy-optimal. Leveraging the port-Hamiltonian structure, we show that the optimal control is uniquely determined, even on singular arcs. Further, we prove a stable long-time behavior of optimal trajectories by means of a turnpike property. Last, the proposed controller's efficiency is evaluated in a numerical study.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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