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Improved semi-active control algorithm for hydraulic damper-based braced buildings

机译：基于液压阻尼器的支撑建筑物的改进半主动控制算法

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摘要

Much research has been conducted on structural control systems to improve the seismic performance of structures under earthquakes and, ultimately, offer high performance-resilient buildings beyond life risk mitigation. Among various structural control algorithms, semi-active control strategies have been widely accepted for overcoming some limitations existed in either passive or active control systems, thereby leading to better structural performance over their counterparts. In this study, a new semi-active control algorithm with minimum control parameters is developed to drive the hydraulic damper for effective control of the dynamic deformation of low- and high-rise building structures under earthquake loadings. The new controller allows less input and computation for determining the damping coefficient of the hydraulic dampers while maintaining a higher performance. V-braced buildings with three varying heights are used as prototypes to demonstrate the effectiveness of the proposed semi-active damper. Two critical parameters, maximum drift and acceleration of stories, are defined for the performance criteria. The simulation results show that the developed semi-active damper can significantly improve the seismic performance of the buildings in terms of controlled story drift and acceleration. By use of less input and reduced time delay effects, the proposed control system is comparable with those of existing semi-active controllers. The findings in this study will help engineers to design control systems for seismic risk mitigation and effectively facilitate the performance-based seismic design.
机译：已经对结构控制系统进行了大量研究，以改善地震条件下结构的抗震性能，并最终提供可减轻生命危险的，具有高弹性的建筑物。在各种结构控制算法中，半主动控制策略已被广泛接受，以克服被动或主动控制系统中存在的某些限制，从而导致其结构性能优于同类控制系统。在这项研究中，开发了一种新的具有最小控制参数的半主动控制算法来驱动液压阻尼器，以有效控制地震荷载作用下低层和高层建筑结构的动态变形。新的控制器允许更少的输入和计算来确定液压阻尼器的阻尼系数，同时保持更高的性能。具有三个高度变化的V型支撑建筑被用作原型，以证明所提出的半主动阻尼器的有效性。绩效标准定义了两个关键参数，即最大漂移和故事的加速度。仿真结果表明，所开发的半主动减振器可以在控制层位移和加速度方面显着提高建筑物的抗震性能。通过使用较少的输入和减少的时延效应，所提出的控制系统可与现有的半主动控制器相媲美。这项研究的结果将有助于工程师设计用于减轻地震风险的控制系统，并有效地促进基于性能的地震设计。

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