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Optimum Parameter of a Variable Damping System for Seismic Applications

机译:地震应用中可变阻尼系统的最佳参数

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Determination of optimal parameters of a passive control system device is the primary objective of this study. Expanding upon the use of control devices in wind and earthquake hazard reduction has led to development of various control systems. The advantage of non-linear characteristics in a passive control device and the optimal control method using LQR algorithm are explained in this study. Finally, this paper introduces a simple approach to determine optimum parameters of a nonlinear viscous damper for vibration control of structures. A MATLAB code is developed to produce the dynamic motion of the structure considering the stiffness matrix of an SDOF frame and the non-linear damping effect. This study demonstrates that the proposed system (variable damping system) has better performance in system response control than a linear damping system. Also, according to the energy dissipation graph, the total energy loss is greater in non-linear damping system than linear damping as well as active control systems.
机译:确定无源控制系统设备的最佳参数是本研究的主要目标。在减少风灾和地震灾害中使用控制设备的扩展导致了各种控制系统的发展。本研究阐述了无源控制装置中非线性特性的优势以及采用LQR算法的最优控制方法。最后,本文介绍了一种简单的方法来确定用于结构振动控制的非线性粘性阻尼器的最佳参数。考虑到SDOF框架的刚度矩阵和非线性阻尼效应,开发了MATLAB代码以产生结构的动态运动。这项研究表明,所提出的系统(可变阻尼系统)在系统响应控制方面比线性阻尼系统具有更好的性能。同样,根据能量耗散图,非线性阻尼系统的总能量损失比线性阻尼以及主动控制系统的总能量损失更大。

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