惯性质量对馈能悬架阻尼特性和幅频特性的影响  

Influence of inertial mass on damping and amplitude-frequency characteristic of regenerative suspension

作　　者：刘松山[1] 王庆年[1] 王伟华[1] 林鑫[1] 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2013年第3期557-563,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：'863'国家高技术研究发展计划项目(2006AA11A184);吉林省科技发展计划项目(20080536)

摘　　要：建立了包括馈能电机及其控制模型在内的馈能减振器Matlab/simulink仿真模型,分析了惯性力对馈能悬架阻尼特性的影响。利用结构振动分析方法,推导出馈能悬架固有频率的计算公式及对路面激励的传递特性。通过改变惯量比,分析了惯性质量对车身加速度、悬架动挠度和车轮相对动载荷的幅频特性的影响。结果表明:惯性质量使馈能悬架的共振频率较传统悬架提前;性能方面,低频共振区特性有一定的改善,而对高频共振区传递特性产生不利影响;更高激励频率对平顺性不利,而对安全性影响不大。A complicated regenerative damper model containing regenerative motor and its control model was established to investigate the influence of inertial mass on damping characteristic. Analyzed by structural vibration method, the suspension natural frequency equation and the transfer characteristics of sprung/unsprung mass to road excitation were obtained. Alter the ratio of inertial mass to unsprung mass and analyze its influence on amplitude-frequency characteristic of body acceleration, suspension deflection and wheel dynamic load. The results show that the resonance frequency of regenerative suspension is prior to conventional suspension and the main weakness of inertial mass influence is that it increases the transfer characteristic of higher resonance frequency, although has little improvement for lower resonance frequency. With higher excitation frequency, it affects the ride comfort while has little influence on safety.

关 键 词：车辆工程 馈能悬架 振动分析 惯性质量 幅频特性 阻尼特性 

分 类 号：U461.4[机械工程—车辆工程]