二级液压脉动衰减器的共振频率分析  

Resonance Frequencies of Twi-cavity Pulsation Dampers in Hydraulic Systems

作　　者：杜润[1] 柯坚[1] 刘凯[1] 于兰英[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《机床与液压》2010年第9期34-36,共3页Machine Tool & Hydraulics

摘　　要：对二级液压脉动衰减器用集中参数法进行分析,在忽略液阻的情况下,导出计算二级衰减器两个固有频率的公式。以两个二级脉动衰减器为例,对比用分布参数法与集中参数法计算出的频率特性,并比较简化计算的共振频率与集中参数法和分布参数法计算的共振频率。结果表明,简化计算得到的二级脉动衰减器的两个固有频率与实际系统的差别较小,具有实用性,为二级脉动衰减器的设计分析提供参考。Ignoring hydraulic resistance, two resonance frequencies of twi-cavity pulsation dampers were analyzed with concentrated parameter method and the formulas were deduced. Frequency characteristics of two actual twi-cavity pulsation dampers calculated with distributed parameter method and concentrated parameter method were compared, and resonance frequencies calculated with simplification method were compared with those with distributed parameter method and concentrated parameter method. The result shows simplification method is practical because two resonance frequencies calculated with this method is approached to exact solution.

关 键 词：液压 脉动衰减器 频率响应 共振频率 

分 类 号：TH137[机械工程—机械制造及自动化]