中国机械工程 ›› 2012, Vol. 23 ›› Issue (18): 2258-2262.

• 车辆工程 • 上一篇    下一篇

基于俯仰角加速度的驾驶室悬置系统修改

张军峰;贺岩松;杨海威;黄勇   

  1. 重庆大学机械传动国家重点实验室,重庆,400030
  • 出版日期:2012-09-25 发布日期:2012-09-29
  • 基金资助:
    国家自然科学基金资助项目(50975296);重庆市重大科技专项(CSTC,2009AB6018) 
    National Natural Science Foundation of China(No. 50975296);
    Science and Technology Major Project of Chongqing( No. CSTC,2009AB6018)

Modification of Cab Suspension System Based on Pitch Angular Acceleration

Zhang Junfeng;He Yansong;Yang Haiwei;Huang Yong   

  1. State  Key Lab of Mechanical Transmissions,Chongqing University,Chongqing,400030
  • Online:2012-09-25 Published:2012-09-29
  • Supported by:
     
    National Natural Science Foundation of China(No. 50975296);
    Science and Technology Major Project of Chongqing( No. CSTC,2009AB6018)

摘要:

采用柔性化的驾驶室建立驾驶室悬置系统的多体动力学模型,通过道路试验测得仿真模型的激励和验证信号,从自由度、加速度均方根值和系统模态等三个方面验证了模型的正确性。以俯仰角加权加速度均方根值为优化目标,在频域内对驾驶室悬置参数进行了正交试验匹配,使得不同车速下座椅处的俯仰角加权加速度均方根值平均降低14%,垂向加权加速度均方根值平均降低9%,驾驶室悬置动扰度平均降低18%。最后重新设计了驾驶室前后悬置弹簧。

关键词: 道路试验, 刚柔耦合, 动挠度, 驾驶室悬置系统

Abstract:

A multi-body dynamics model based on flexible suspension cab was built.The excitation and validation signals were acquired through road-test.The accuracy of the model was investigated in three ways by
degree of freedom,acceleration RMS and system mode shapes.Taking weighted pitch angular acceleration RMS as the evaluation target,the orthogonal test for matching parameters of the cab suspension was conducted in the frequency domain,the driver's seat weighted pitch angular acceleration RMS is reduced by 9% on average at various speeds,the weighted vertical acceleration RMS is reduced by 14% on average and reduction of the dynamic deflection of cab suspension is as 18%.Finally,the cab
suspension springs were redesigned according to the calculation results.

Key words: road test, rigid-flexible coupling, dynamic deflection, cab suspension system

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