基于电液类比原理的水导激光水压脉动衰减器滤波特性

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中图分类号：TH137DOI：10.3969/j.issn.1004-132X.2025.09.007 开放科学（资源服务）标识码（OSID）：

Filtering Characteristics of WJGL Pulsation Attenuator Based on ElectroHydraulic Analogy Principles

MENG Chaozhong1 YANG Fan1 YU Jiaxin1 WANG Yuqiang² 1.School of Manufacturing Science and Engineering， Southwest University of Science and Technology ， Mianyang，Sichuan，621010 2.The Second Research Institute of CAAC，Chengdu，610041

Abstract： In WJGL，the instability in water jet from low-frequency pressure pulsations （0～500Hz ） in fluid supply systems needed urgent resolution. A water pressure pulsation attnuator was designed using flexible liners for coupling vibrations and Herschel-Quincke tubes （HQ tubes）for phase cancelation， achieving dual filtering.A transfer matrix model was established based on one-dimensional analytical approach and electro-hydraulic analogy principle，and the feasibility was experimentally verified through prototype testing. The influence mechanism of key parameters， such as HQ tube structures， insert tube lengths，and liner elastic modulus on low-frequency pulsation attenuation were quantitative analyzed in simulations. The results show that the damping performance of polyurethane liners improves as their elastic modulus decreases，while the loss angle negatively affects transmission loss. Under certain conditions， changing the insert tube lengths has minimal impact on transmission loss（TL），but increasing the HQ tube lengths and reducing the diameter enhances attenuation.

Key words：water jet guided laser（WJGL） fluid supplying system；low frequency pressure pulsation; electro-hydraulic analogy method；transfer matrix acoustic model

0 引言

水导激光（waterjetguidedlaser，WJGL）是一种采用微水射流引导激光到基材表面的精密加工技术，通过控制水射流的稳定直径可以使该技术能够进行极小制造[1。（剩余9560字）