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Date of Publication:2022-10-10

Journal:液压气动与密封

Affiliation of Author(s):机械工程学院

Volume:38

Issue:2

Page Number:16-21

ISSN No.:1008-0813

Abstract:This paper studied the dynamic characteristics of hydraulic system pipeline,the arithmetical expression of pipe line resonance fre-quency,the transfer matrix were deduced.Through analyzing the phenomenon of water hammer in time domain,frequency domain,intro-duced the analytical method in time domain and frequency domain based on AMESim software,proofed that AMESim software could effec-tively 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 us-ing this method,explored the relationship between the length,diameter,thickness of pipeline and the resonance frequency and phase differ-ence 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 significant-ly,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.

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