• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2025, Vol. 61 ›› Issue (8): 344-351.doi: 10.3901/JME.2025.08.344

• 交叉与前沿 • 上一篇    

扫码分享

面向数字阀组压力脉动的复合被动稳压结构设计

姚静1,2, 张昊1, 宋英哲1,3, 王佩1   

  1. 1. 燕山大学机械工程学院 秦皇岛 066004;
    2. 燕山大学河北省重型机械流体动力传输与控制实验室 秦皇岛 066004;
    3. 徐州工程机械技师学院 徐州 221000
  • 收稿日期:2024-05-03 修回日期:2024-11-27 发布日期:2025-05-10
  • 作者简介:姚静,女,1978年出生,博士,教授。主要研究方向为流体传动与控制。E-mail:jyao@ysu.edu.cn;宋英哲(通信作者),男,1997年出生。主要研究方向为流体传动与控制。E-mail:song_yz@163.com
  • 基金资助:
    国家自然科学基金资助项目(51975507)。

Composite Passive Stabilizer Structure Design for Pressure Pulsation of Digital Valve Package

YAO Jing1,2, ZHANG Hao1, SONG Yingzhe1,3, WANG Pei1   

  1. 1. School of Mechanical Engineering, Yanshan University, Qinhuangdao 006004;
    2. Hebei Provincial Key Laboratory of Heavy Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004;
    3. Xuzhou Construction Machinery Technician College, Xuzhou 221000
  • Received:2024-05-03 Revised:2024-11-27 Published:2025-05-10

摘要: 数字液压系统中数字阀组切换会导致低频压力脉动,然而目前传统压力脉动衰减结构主要针对于高频脉动工况。因此,提出一种利用柔性衬里及压力波的相位相错振幅相消原理实现双重滤波的压力脉动衰减结构。首先,采用一维解析法及电液比拟法建立其传递矩阵数学模型,基于Matlab数值仿真模拟,分析柔性衬里体积模量、颈部直径、HQ管等关键结构参数对低频压力脉动衰减效果的影响规律;其次,匹配数字阀组低频压力脉动工况进行了样机结构参数设计;最后,搭建压力脉动测试试验台验证低频压力脉动的衰减效果。试验结果表明,所提出的复合型压力脉动衰减结构在10~50 Hz及85~100 Hz频率段内平均插入损失达到5 dB以上,最大试验值可达11.95 dB。研究成果对低频压力脉动衰减结构设计提供理论支撑和分析方法新思路。

关键词: 数字阀组, 低频压力脉动, 压力脉动衰减, 传递矩阵数学模型

Abstract: The Switching characteristics of digital valve package caused the low-frequency pressure pulsation in the digital hydraulic system, However, the current traditional pressure pulsation attenuation structure is suitable for the high-frequency pulsation. Thus, A pressure pulsation attenuation structure is propsed, which combines the flexible lining with the principle of reverse phase cancellation of pressure wave of to realize double filterin. Firstly, The mathematical model of transmission matrix is established by one-dimensional analytical method and electro-hydraulic comparison method, the influence of key structural parameters such as the bulk modulus of the flexible lining, neck diameter, and HQ tube on the attenuation effect of low-frequency pressure pulsation is analyzed based on Matlab numerical simulation. Secondly, the prototype structural parameters were designed by matching the low-frequency pressure pulsation of digital valve package. Finally, the tests are conducted on its test bench to verify the attenuation effect of low-frequency pressure pulsation. The test results show that the proposed compound pressure pulsation structure had an average insertion loss of more than 5 dB in the frequency band of 10-50 Hz and 85-100 Hz, and the maximum test value could reach 11.95 dB. The research results provide theoretical support and analytical methods for the design of low-frequency pressure pulsation structures.

Key words: digital valve package, low-frequency pressure pulsation, pressure pulsation attenuation, transfer matrix mathematical model

中图分类号: