管路型带附加气室空气弹簧的时域动态特性建模  

Modeling of time-domain dynamic characteristics of a pipe-type air spring with an auxiliary chamber

作　　者：郑益谦 上官文斌[2] ZHENG Yi-qian;SHANGGUAN Wen-bin(College of Packaging Engineering,Jinan University,Zhuhai 519070,China;School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]暨南大学包装工程学院,广东珠海519070 [2]华南理工大学机械与汽车工程学院,广东广州510641

出　　处：《振动工程学报》2023年第6期1539-1545,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金面上项目(12272137)。

摘　　要：空气弹簧是汽车空气悬架系统振动控制中的关键部件,时域动态特性是评价其隔振性能的重要指标。为研究管路型带附加气室空气弹簧的时域动态特性,设计并建立了具备充放气装置的空气弹簧动态特性测试的试验台,测试得到了空气弹簧在简谐激励和阶跃激励下的传递力响应。根据热力学原理,建立空气弹簧的集总参数模型,推导了空气弹簧系统动复刚度的频域模型;基于卷积定理,提出一种空气弹簧时域动态特性的解析计算方法。根据建立的时域模型,给出了空气弹簧模型参数的识别方法,并与实测值进行对比验证。结果表明,在简谐激励下,传递力的计算值与试验值误差小于5%。Air spring is a key component in vibration control of air suspension systems in vehicles,and its time-domain dynamic characteristic is an important index to evaluate the vibration isolation performance.To study the time-domain dynamic characteristics of a pipe-type air spring with an auxiliary chamber,a test bench with an air charging system is established to measure the transmitted forces of air spring under harmonic excitations and step excitations.A lumped parameter model for an air spring system is established,and the dynamic complex stiffness model is derived.Based on the convolution theorem,an analytical model for calculating the time-domain dynamic characteristics of air spring is developed.The parameters of the proposed model are identified,and the calculated transmitted force by using the proposed model is compared with the measured data.The results show that the error between estimated values and experimental values is less than 5%under harmonic excitation.

关 键 词：空气弹簧 时域动态特性 阶跃响应 参数辨识 

分 类 号：U463.334.2[机械工程—车辆工程] O328[交通运输工程—载运工具运用工程]