Long-period vibrations are very common in various flexible structures, such as high-rise buildings and floating structures. Inspired by latching-based phase optimization in wave energy converters (WECs), a latching control mechanism is applied to realize long-period vibration control. Based on pendulum tuned mass dampers which are a traditional type of vibration control device, an innovative pendulum latched mass damper (PLMD) is proposed, fabricated, and investigated for the first time in this study. First, the concept of PLMD is introduced, and the theoretical model is established. Second, the mechanism and semi-active control strategies for the proposed PLMD are designed. Third, an innovative bench-scale PLMD system is designed and fabricated, wherein the latching control is achieved by using a permanent magnet (PM) brake. Proof-of-concept experiments and numerical simulations are conducted to examine the characteristics, feasibility, and effectiveness of the proposed PLMD. The effects of different latching strategies and time delay are particularly discussed. The proposed latching control mechanism will offer a new and promising solution to remarkably advance long-period vibration control and adaptive-frequency vibration control for various engineering structures.

中文翻译：

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摆锤调谐质量阻尼器的闭锁控制：理论分析和概念验证实验


长周期振动在各种柔性结构中非常常见，例如高层建筑和浮动结构。受波浪能转换器 （WEC） 中基于锁存相位优化的启发，应用了锁存控制机制来实现长周期振动控制。基于传统类型的振动控制装置摆锤调谐质量阻尼器，本研究首次提出、制造和研究了一种创新的摆锤锁定质量阻尼器 （PLMD）。首先，介绍了 PLMD 的概念，并建立了理论模型。其次，设计了所提出的 PLMD 的机制和半主动控制策略。第三，设计和制造了一种创新的台式 PLMD 系统，其中通过使用永磁 （PM） 制动器实现闭锁控制。进行了概念验证实验和数值模拟，以检验所提出的 PLM MD 的特性、可行性和有效性。特别讨论了不同闭锁策略和时间延迟的影响。所提出的闭锁控制机制将提供一种新的、有前途的解决方案，以显着推进各种工程结构的长周期振动控制和自适应频率振动控制。