考虑非线性气滞的内置组合阀式CDC减振器特性建模  

Characteristics Modeling of CDC Damper with Built-in Combination Valve Considering Nonlinear Gas-Hysteresis

作　　者：朱甲梁 刘巧斌 冯培进 陈国强 Zhu Jialiang;Liu Qiaobin;Feng Peijin;Chen Guoqiang(School of Mechanical&Automotive Engineering,South China University of Technology,Guangzhou 510641;Guangzhou DN Suspension Technology Co.,Ltd.,Guangzhou 511450)

机构地区：[1]华南理工大学机械与汽车工程学院,广州510641 [2]广州多耐减振科技有限公司,广州511450

出　　处：《汽车工程》2025年第4期764-775,共12页Automotive Engineering

基　　金：国家自然科学基金(52202499);中央高校基本科研业务费专项资金(2023ZYGXZR065);广州市基础与应用基础研究项目(SL2023A04J00639)资助。

摘　　要：减振器是悬架系统核心部件,对汽车操纵性和舒适性具有重要影响。传统减振器存在高温高速工况下响应空程和特性畸变等问题,且研发过程依赖大量实验,导致设计周期长、成本高。为此,首先提出一种内置组合阀式连续阻尼控制(CDC)减振器方案,基于有限元法量化分析阀系响应特性;其次,剖析减振器外特性的非线性特征,联合分段模型和补偿模型建立减振器混合模型,实现非线性气滞特性的有效刻画;最后,基于实测数据辨识不同电流-激励频率耦合作用下的减振器模型参数,并开展参数频变特性分析和模型准确性验证。结果表明,相比于分段模型,所提出的混合模型精度平均提高55.91%,与实测数据相比误差小于10%。所提出的新型减振器结构及其特性建模方法,可有效改善减振器性能,并减少开发成本。The damper is a core component of the suspension system,exerting significant influence on both vehicle handling and ride comfort.Traditional damper exhibits unstable response and distorted characteristics under high-temperature and high-speed conditions.Moreover,the development process heavily relies on extensive experimentation,leading to prolonged design cycles and increased cost.For this,firstly,the scheme of the continuous damping control(CDC) damper with built-in combination valve is proposedd,and the response characteristics of the valve system are quantified based on finite element method.Secondly,the nonlinear features of the damper external characteristics are analyzed,with which the hybrid model that combines piecewise models and compensation models is established to effectively capture the nonlinear gas hysteresis characteristics.Finally,all damper model parameters are identified based on measured data under different current-frequency coupling excitation effect.Subsequently,the parameters frequency-varying characteristics and the model accuracy are verified.The results indicate that the accuracy of the proposed hybrid model is improved by 55.91% on average compared with the piecewise model,with the error less than 10% compared with the measured data.The proposed innovative damper structure along with its characteristic modeling method can significantly enhance damper performance while simultaneously reduce development cost.

关 键 词：CDC减振器 频变特性 非线性气滞 混合模型 

分 类 号：U463.33[机械工程—车辆工程]