【摘要】 随着城市建筑功能与形态的日益多样化，对阻尼器减振性能与适应性的要求不断提高。本研究提出了一种基于变刚度调频策略的半主动颗粒惯容系统（Semi-active Particle Inerter System, SAPIS），通过对阻尼器刚度进行半主动调控，有效拓宽减振频带，增强系统的振动控制性能。研究采用希尔伯特黄变换识别主结构的瞬时振动频率，并进一步提出趋势修正样条加权指数平均方法预测频率变化趋势。基于预测结果，构建模糊控制策略，将控制输出分为三个刚度挡位，实现SAPIS刚度的动态调节，以适应不同激励条件。分别以正弦信号和风荷载为数值模拟的外激励，评估SAPIS对某一悬挑观景平台的减振性能。正弦激励的数值模拟结果表明，所提方法能够准确跟踪主结构的瞬时频率，并调整SAPIS的刚度，使其保持与结构频率的最佳匹配，从而提升减振稳定性。在风荷载激励条件下，SAPIS能显著降低结构的峰值和均方根加速度响应，减振率分别达到51.79%和48.11%，相较于传统调谐质量阻尼器（Tuned Mass Damper, TMD）和颗粒惯容系统（Particle Inerter System, PIS）,SAPIS展现出更优的减振效果。此外，在阻尼器行程控制方面，SAPIS相较于TMD和PIS分别减少了60.86%和11.76%，进一步提升了装置的适用性和工程可行性。更多还原

【Abstract】 With the increasing diversity of functions and forms in urban architecture, higher demands have been placed on the performance and adaptability of structural dampers. This study proposed a Semi-active Particle Inerter System(SAPIS) based on a variable stiffness tuning strategy. By semi-actively adjusting the damper’s stiffness, SAPIS effectively broadened the vibration control bandwidth and enhanced its vibration control performance. The proposed approach employed the Hilbert–Huang transform to identify the instantaneous vibration frequency of the primary structure. A trend-corrected spline-weighted exponential moving average method was further developed to predict the frequency variation trend. Based on the prediction, a fuzzy control strategy was constructed, categorizing the control output into three stiffness levels and allowing dynamic stiffness adjustment of SAPIS in response to varying excitation conditions. Numerical simulations were conducted using both sinusoidal signals and wind loads as external excitations to evaluate the vibration control performance of SAPIS for a cantilevered viewing platform. Under sinusoidal excitation, the results demonstrated that the proposed method accurately tracked the instantaneous frequency of the primary structure and dynamically adjusted SAPIS stiffness to maintain optimal tuning, thereby improving vibration control stability. Under wind excitation, SAPIS significantly reduced the peak and root-mean-square acceleration responses of the structure, with reduction rates of 51.79% and 48.11%, respectively. Compared with conventional Tuned Mass Damper(TMD) and Particle Inerter Systems(PIS), SAPIS exhibited superior vibration control performance. In addition, SAPIS shortened the damper stroke by 60.86% and 11.76% compared to TMD and PIS, respectively, further enhancing its applicability and feasibility in engineering practice.更多还原