变质量动力吸振器模糊控制策略研究  

Research on Fuzzy Control Strategy for Variable Mass Dynamic Vibration Absorber

作　　者：高强[1] 李筱筱 孙吉超 段晨东[2] GAO Qiang;LI Xiaoxiao;SUN Jichao;DUAN Chendong(School of Automobile,Chang'an University Xi'an,710064,China;School of Electronic and Control Engineering,Chang'an University Xi'an,710064,China)

机构地区：[1]长安大学汽车学院,西安710064 [2]长安大学电子与控制工程学院,西安710064

出　　处：《振动.测试与诊断》2025年第2期296-300,411,共6页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(61703052);中央高校基本科研业务费资助项目(300102228301)。

摘　　要：为了克服传统动力吸振器有效频带过窄的缺陷,提高其减振效果,针对一种新型自适应动力吸振器-变质量动力吸振器,研究了基于模糊逻辑的控制策略。该控制策略通过变质量动力吸振器与主系统振动信号的相位差判断吸振器固有频率与主系统激振频率是否相等,在吸振器失谐时采用模糊控制规则改变吸振器质量,使吸振器固有频率能够及时跟踪主系统激振频率的变化。通过数字仿真和台架实验对该控制策略的效果进行了验证,结果表明:所设计的基于模糊逻辑的变质量动力吸振器控制策略能够根据主系统激振频率的变化调整吸振器质量,使吸振器总是处于调谐状态,可在一个较宽的频带内明显提高吸振器减振效果,具有很好的工程应用价值。In order to improve the vibration attenuation performance of the variable mass dynamic vibration absorber(DVA),a control strategy based on fuzzy logic is investigated in this paper.The phase difference between the vibration signals of the variable mass DVA and the primary system is used for checking whether the natural frequency of the DVA is equal to the excitation frequency.When the absorber is untuned,a designed fuzzy logic control rule is applied for changing the mass of the variable mass DVA so that the absorber natural frequency changes to match the excitation frequency of the primary system.Numerical simulations and experiments are conducted to test the performance of the control strategy,both results show that the designed fuzzy logic control strategy can adjust the mass of the DVA to make the absorber natural frequency matched with the excitation frequency of the primary system.Hence,the variable mass DVA is always tuned to significantly suppress the vibration of the primary system in a broadband.The control strategy is useful for engineering application of the variable mass DVA.

关 键 词：振动控制 动力吸振器 自适应动力吸振器 吸振器控制 模糊控制 

分 类 号：TH113.1[机械工程—机械设计及理论]