主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (1): 118-122.DOI: 10.16638/j.cnki.1671-7988.2022.001.027

• 测试试验 • 上一篇    

多种加速工况下车辆悬架系统非平稳随机 振动特性研究

何章成 1，施皓哲 1，欧阳文杰 1，鲁学涛 1，戴 涛 2，张步云 2   

  1. 1.江苏大学汽车与交通工程学院；2.江苏大学汽车工程研究院
  • 出版日期:2022-01-15 发布日期:2022-01-15
  • 通讯作者: 何章成
  • 作者简介:何章成，江苏大学汽车与交通工程学院。
  • 基金资助:
    基金项目： 江苏省高等学校大学生创新创业训练计划项目（201910299179Y）

Research on Non-stationary Random Vibration Performance of Vehicle Suspension System under Varied Accelerated Conditions

HE Zhangcheng1 , SHI Haozhe1 , OUYANG Wenjie1, LU Xuetao1 , DAI Tao2 , ZHANG Buyun2   

  1. 1.School of Automotive and Traffic Engineering, Jiangsu University; 2.Automotive Engineering Research Institute, Jiangsu University
  • Online:2022-01-15 Published:2022-01-15
  • Contact: HE Zhangcheng

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摘要： 文章研究了车辆在多种加速工况下受到路面的非平稳随机激励，以及因此产生的非平稳随 机振动响应特性。利用协方差等效法和滤波白噪声法建立车辆在不同加速度下所受到的道路激励 模型，采用精细积分法求解 1/4 车辆模型在不同激励下车轮与车身的垂向加速度响应。结果表明， 车辆通过同一等级路面时，路面非平稳激励、车身和车轮垂向加速度均会随行驶加速度的增加而 呈现不同比例的增大。

关键词: 非平稳随机振动；悬架系统；精细积分法；车辆平顺性

Abstract: The non-stationary random excitation of the vehicle and the non-stationary random vibration response caused by the vehicle under various acceleration conditions are studied. The covariance equivalent method and the filtered white noise method are used to establish the road excitation model of the vehicle under different accelerations. The vertical integration method is used to solve the vertical acceleration response of the wheel and the body of the 1/4 vehicle model under different road excitations. It is concluded that when the vehicle travels through the same grade of road surface in the same time, the non-stationary excitation of the road surface, the vertical acceleration of the body and the wheel, will all increase with the increase of the acceleration.

Key words: Non-stationary random vibration; Suspension system; Precise integration method; Vehicle ride comfort