串联囊式压力脉动衰减器气压主动控制方法研究  

Active control method for air pressure of series bag pressure pulse attenuator

作　　者：习毅 戴巨川[1] 刘文 王菊维 潘玉明 XI Yi;DAI Juchuan;LIU Wen;WANG Juwei;PAN Yuming(College of Mechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;College of Information and Intelligence Engineering,Zhejiang Wanli College,Ningbo 315100,China;Ningbo Shuanglin Auto Parts Co.,Ltd.,Ningbo 315100,China)

机构地区：[1]湖南科技大学机电工程学院,湖南湘潭411201 [2]浙江万里学院信息与智能工程学院,浙江宁波315100 [3]宁波双林汽车部件股份有限公司,浙江宁波315100

出　　处：《振动与冲击》2024年第19期266-275,共10页Journal of Vibration and Shock

基　　金：湖南省教育厅项目(23B0496);国家博士后基金(2023M731822);宁波市重点研发计划(2023Z003)。

摘　　要：针对现有串联囊式衰减器(囊式衰减器)压力适应范围窄的问题,提出了通过气压控制系统实现囊式衰减器气囊内部气压主动跟随液压系统工作压力变化的方法,使囊式衰减器在不同工作压力时均具有良好压力脉动抑制性能。在建立气动伺服控制系统数学模型的基础上,分别采用比例积分微分(proportional integral derivative,PID)及模糊PID控制方法实现了囊式衰减器气囊内部气压主动跟随系统工作压力的变化,分析了系统工作压力的变化频率、振幅、气瓶充气压力等因素对气囊内压力控制性能的影响,在理论上证明了所提出方法的可行性;分别通过声学仿真软件和试验研究了采用与不采用气压主动控制时囊式衰减器对压力脉动的抑制性能,研究结果均表明采用气压主动控制方法时囊式衰减器对液压管道系统压力脉动的衰减幅值更大、压力适应范围更广,进而验证了所提出气压主动控制方法的有效性与可行性。Here,aiming at the problem of narrow pressure adaptation range of existing series bag or bag attenuators,a method was proposed to realize air pressure inside bag attenuator actively following changes in hydraulic system working pressure with air pressure control system,and make bag attenuator possess good pressure pulsation suppression performance under different working pressures.Based on establishing a mathematical model for pneumatic servo control system,PID and fuzzy PID control methods were respectively used to realize air pressure inside bag attenuator actively following changes in hydraulic system working pressure.Effects of system working pressure change frequency and amplitude as well as air bottle inflation pressure on pressure control performance inside bag were analyzed,the feasibility of the proposed method was theoretically proved.The acoustic simulation software and tests were used to study suppression performance of bag attenuator on working pressure pulsation with and without air pressure active control.The results showed that when using the air pressure active control method,bag attenuator has a larger attenuation amplitude and a wider pressure adaptation range on hydraulic pipeline system pressure pulsation;the effectiveness and feasibility of the proposed air pressure active control method are verified.

关 键 词：囊式衰减器 充放气模型 主动控制 

分 类 号：TB535.2[理学—物理]