The field of semiactive control dampers for structural control has seen a significant advancement in recent years. However, the controllers proposed in recent years have been computationally inefficient, time consuming, and did not allow the designer the flexibility in overall structural control. Consequently, this study presents a sequence of numerical and experimental studies conducted to determine the efficiency and performance of proposed multiple response optimization (MRO)-based control with iterative technique, using magnetorheological (MR) dampers as a control device in mitigating the structural response. The prime objective of the MRO control strategy is selecting an optimal control gain, obtained by a trade-off between the gains corresponding to the local minima of structural responses, selected as the performance objective of the controllers. The proposed strategy is numerically compared with H₂/LQG with clipped optimal control (COC). Results indicated the efficiency and flexibility of the proposed strategy in mitigating the structural responses. Finally, multiple shake table tests were performed on a five-story steel frame with MR damper, employing the control strategies to be examined. The corresponding results substantiated the superiority of MRO control over passive control strategies, in mitigating the structural responses.

中文翻译：

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基于迭代技术的磁流变阻尼器控制结构多响应优化控制的实验和数值研究

近年来，用于结构控制的半主动控制阻尼器领域取得了重大进展。然而，近年来提出的控制器计算效率低、耗时长，并且不允许设计者在整体结构控制方面具有灵活性。因此，本研究提出了一系列数值和实验研究，以确定所提出的基于多响应优化 (MRO) 的控制的效率和性能，使用迭代技术，使用磁流变 (MR) 阻尼器作为减轻结构响应的控制装置。MRO 控制策略的主要目标是选择最佳控制增益，通过权衡与结构响应的局部最小值相对应的增益之间获得，被选为控制器的性能目标。所提出的策略在数值上与 H₂ /LQG 带限幅优化控制 (COC)。结果表明所提出的策略在减轻结构响应方面的效率和灵活性。最后，在带有 MR 阻尼器的五层钢框架上进行了多次振动台试验，采用要检查的控制策略。相应的结果证实了 MRO 控制在减轻结构响应方面优于被动控制策略。