| 磁流变阻尼器的半主动控制及实时混合模拟试验研究 |
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| 引用本文： | 李歆,吕西林,Shirley Dyke.磁流变阻尼器的半主动控制及实时混合模拟试验研究[J].世界地震工程,2018,34(4):130-135. |
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| 作者姓名： | 李歆 吕西林 Shirley Dyke |
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| 作者单位： | 同济大学 土木工程防灾国家重点实验室, 上海 200092 |
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| 摘 要： | 磁流变阻尼器作为一种比较典型的半主动控制元件，具有构造简单、响应速度快、耐久性好、阻尼力大且连续可调等优点。即使地震中能源中断，磁流变阻尼器仍可以作为被动耗能装置继续工作发挥作用，可靠性高。设计合理有效的磁流变阻尼器半主动控制方法，对于整体结构的减震效果尤其重要。提出一种改进的磁流变阻尼器的半主动控制策略-改进的Bang-Bang控制策略，对装有磁流变阻尼器的减震控制3层框架结构进行了一系列的实时混合模拟试验，对多种半主动控制方法下的振动控制效果进行试验分析。试验结果表明:磁流变阻尼器对框架结构的减震效果显著，并验证了提出的磁流变阻尼器半主动控制策略的有效性。
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| 关 键 词： | 磁流变阻尼器 实时混合模拟试验 半主动控制 |
A study on semi-active control for MR damper and experimental validation using RTHS |
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| LI Xin,LU Xilin,Shirley Dyke.A study on semi-active control for MR damper and experimental validation using RTHS[J].World Information On Earthquake Engineering,2018,34(4):130-135. |
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| Authors: | LI Xin LU Xilin Shirley Dyke |
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| Affiliation: | State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Magneto-rheological (MR) damper known as its environmental robustness, lower operating power requirement and reliability, has been investigated as an effective semi-active control device for seismically excited building structure. MR damper can still act as a passive damper even without power input. When utilizing MR damper in structural control, one of the challenges is the development of effective control algorithms and control law based on available feedback measurements. To develop control algorithms that take maximum advantage of MR damper, high fidelity model must be developed that can adequately characterize the damper’s nonlinear behavior.A new semi-active control strategy is proposed based on Bang-Bang control. The performance of the proposed semi-active control strategy is evaluated through numerical simulation. To validate the performance of the proposed controller, a series of RTHS tests are performed including a three-story building as numerical substructure and a MR damper located at the first floor as the physical substructure. The results of RTHS are compared with those of pure numerical simulation. The results demonstrate that MR damper is an effective semi-active control device for seismically excited building structure and the proposed control strategy is competitive with other semi-active control strategies. |
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| Keywords: | MR damper real-time hybrid simulation semi-active control |
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