基于AMESim液压系统管路动态特性的研究  

The Research on Pipeline Dynamic Characteristics of Hydraulic System based on AMESim

作　　者：桑勇[1] 邵利来 段富海[1] SANG Yong;SHAO Li-lai;DUAN Fu-hai(School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《液压气动与密封》2018年第2期16-21,共6页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金项目(51275068);中央高校基本科研项目(DUT15LK21)

摘　　要：该文对液压系统管路的动态特性开展研究,理论推导了管路谐振频率、管路传递矩阵等主要参数的计算表达式。引入基于AMESim软件的时域、频域分析方法,通过对经典管路水锤现象进行时域、频域对比分析,证明AMESim软件能有效的模拟管路的实际情况,并能真实的反映管路在时域和频域内的动态特性。在此基础上,将该方法应用于液压伺服系统液压源与伺服阀之间长管路的动态特性分析当中,探索管长、管径及管厚与管路谐振频率及相位差之间的关系。分析结果表明:随着液压管道长度的增加,管路谐振频率显著降低,相位差增大,系统响应时间变长;随着管道内径的增加,管道压力幅值比增加,而谐振频率及相位差变化不大;管道厚度对系统动态特性影响较小。该研究可为液压系统管路设计提供参考。This paper studied the dynamic characteristics of hydraulic system pipeline,the arithmetical expression of pipe line resonance frequency,the transfer matrix were deduced.Through analyzing the phenomenon of water hammer in time domain,frequency domain,introduced the analytical method in time domain and frequency domain based on AMESim software,proofed that AMESim software could effectively simulate the actual situation of the pipeline,and reflect the real line dynamic characteristics in time domain and frequency domain.On this basis,analyzed the dynamic characteristics of the long pipe between hydraulic source and servo valve of hydraulic servo system by using this method,explored the relationship between the length,diameter,thickness of pipeline and the resonance frequency and phase difference of it.Analysis results show that:With the increase of hydraulic pipe length,pipe resonant frequency decreased significantly,but the phase difference and system response time increased;With the increase of pipe diameter,pipe pressure amplitude ratio increased significantly,the resonance frequency and phase difference changed a little;Pipe thickness had smaller influence on the system's dynamic characteristics.The study can provide reference for hydraulic system pipeline design.

关 键 词：交流液压 频域分析 AMESIM 动态特性 

分 类 号：TH137[机械工程—机械制造及自动化]