中国机械工程

• 机械基础工程 • 上一篇    下一篇

引入悬架K&C特性参数的汽车操纵稳定性数学模型

李广1,2;刘芳1,2;檀润华1,2;李雪鹏3;王天禹1,2   

  1. 1.河北工业大学机械学院,天津,300130
    2.国家技术创新方法与实施工具工程技术研究中心,天津,300130
    3.中国汽车技术研究中心,天津,300300
  • 出版日期:2018-06-10 发布日期:2018-06-08
  • 基金资助:
    国家自然科学基金资助项目(51605134)
    National Natural Science Foundation of China (No. 51605134)

Mathematical Model of Vehicle Handling Stability Based on Suspension K&C Characteristics Parameters

LI Guang1,2;LIU Fang1,2;TAN Runhua1,2;LI Xuepeng3;WANG Tianyu1,2   

  1. 1.School of Mechanical Engineering, Hebei University of Technology,Tianjin,300130
    2.The Research Center of National Technology Innovation Method and Implementation Tool Engineering Technology,Tianjin,300130
    3.China Automotive Technology & Research Center,Tianjin,300300
  • Online:2018-06-10 Published:2018-06-08
  • Supported by:
    National Natural Science Foundation of China (No. 51605134)

摘要: 基于经典操纵稳定性二自由度线性数学模型研究方法,通过力学分析建立了包含悬架K&C特性参数的汽车操纵稳定性线性数学模型,并建立其MATLAB模型。将经典操纵稳定性二自由度数学模型和引入悬架K&C特性参数的操纵稳定性数学模型对整车不足转向度及横摆角速度的影响进行对比分析,研究悬架K&C特性参数与操纵稳定性的关系。依据三种小型SUV的悬架K&C数据及整车阶跃试验数据,对两种操纵稳定性数学模型进行计算,并与试验结果进行了对比,验证了引入悬架K&C特性参数的操纵稳定性数学模型的准确性。

关键词: 悬架K&, C特性, 操纵稳定性, 二自由度线性模型, 不足转向

Abstract: Based on classic two-degrees of freedom linear mathematical model about handling stability,a linear mathematical model and MATLAB model which included suspension K&C characteristics parameters were established by the mechanics analysis method.Then the relationship between suspension K&C characteristics and handling stability was researched by comparing the understeer and yaw rate of classic two-degrees of freedom linear mathematical model with the linear mathematical model which included suspension K&C characteristics parameters.The accuracy of mathematical model which included suspension K&C characteristics parameters was validated by contrasting the results from mathematical model simulations and two mathematical model data which came from suspension K&C of three small sport-utility vehicle(SUV) and vehicle step test.

Key words: suspension K&, C characteristics; handling stability; two-degrees of freedom linear model; understeer

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