防灾减灾工程学报2025，Vol.45Issue(6)：1455-1463,1514,10.DOI:10.13409/j.cnki.jdpme.20250430079
半主动变刚度颗粒惯容系统减振控制研究
Study of Semi-active Variable Stiffness Particle Inerter System for Vibration Control
摘要
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-ac-tively 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 re-sponse 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 pro-posed method accurately tracked the instantaneous frequency of the primary structure and dynamically adjusted SAPIS stiffness to maintain optimal tuning,thereby improving vibration control stability.Un-der wind excitation,SAPIS significantly reduced the peak and root-mean-square acceleration respons-es of the structure,with reduction rates of 51.79%and 48.11%,respectively.Compared with conven-tional Tuned Mass Damper(TMD)and Particle Inerter Systems(PIS),SAPIS exhibited superior vi-bration 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 engineer-ing practice.关键词
振动控制/半主动控制/变刚度/颗粒惯容系统/减振效果Key words
vibration control/semi-active control/variable stiffness/particle inerter system/vibration damping effect分类
建筑与水利引用本文复制引用
LU Zheng,WANG Zhijie,FU Jundong..半主动变刚度颗粒惯容系统减振控制研究[J].防灾减灾工程学报,2025,45(6):1455-1463,1514,10.基金项目
国家自然科学基金项目(52178296)资助 （52178296）
