吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (5): 1388-1394.doi: 10.13229/j.cnki.jdxbgxb201505002

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面向制动踏板感觉的主缸动力学模型及其关键影响因素

孟德建1, 2, 3, 张立军1, 2, 方明霞4, 余卓平1, 2   

  1. 1.同济大学 汽车学院,上海 201804;
    2.同济大学 智能型新能源汽车协同创新中心,上海 201804;
    3.同济大学 力学流动站,上海 200092;
    4.同济大学,航空航天与力学学院,上海 200092
  • 收稿日期:2013-12-15 出版日期:2015-09-01 发布日期:2015-09-01
  • 通讯作者: 张立军(1972-),男,教授,博士生导师.研究方向:汽车系统动力学,振动与噪声控制.E-mail:tjedu_zhanglijun@tongji.edu.cn
  • 作者简介:孟德建(1982-）,男,助理教授,博士.研究方向:汽车系统动力学,振动与噪声控制.
  • 基金资助:
    中国博士后科学基金项目(2013M531208); 国家自然科学基金项目(51175380)

Master cylinder dynamic model for brake pedal feeling and its key factors

MENG De-jian1, 2, 3, ZHANG Li-jun1, 2, FANG Ming-xia4, YU Zhuo-ping1, 2   

  1. 1.School of Automotive Engineering,Tongji University,Shanghai 201804,China;
    2.Collaborative Innovation Center for Intelligent New Energy Vehicle,Tongji University,Shanghai 201804,China;
    3.Mechanics Post-doctoral Research Station,Tongji University,Shanghai 200092,China;
    4.School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China
  • Received:2013-12-15 Online:2015-09-01 Published:2015-09-01

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摘要： 考虑回位弹簧的预紧力、系统摩擦力、阀口间隙以及制动液体积弹性模量的变化,建立了面向制动踏板感觉的制动主缸动力学模型。开展了不同推杆速度下的制动主缸特性试验,进而辨识了模型的关键参数。经过对比与分析发现,试验结果与仿真结果一致性较好。进而分析了影响制动踏板感觉的关键因素,结果表明:活塞内径、回位弹簧预紧力和刚度以及制动液气体含量对面向制动踏板感觉的制动主缸特性具有重要的影响。

关键词: 车辆工程, 制动主缸, 液压制动系统, 制动踏板感觉, 体积弹性模量

Abstract: A brake master cylinder dynamic model for brake pedal feeling is proposed, in which the return spring preload, system friction forces, valve port clearance and changes in the brake fluid bulk modulus are considered. Experiments on the characteristics of the brake master cylinder are carried out under the condition of different pushrod speed, and then the key parameters of model are identified. By analysis and comparison, it is found that the test results and the simulation results have a good consistency. Further, the key factors of the brake master cylinder for brake pedal feel are analyzed, and results show that the piston diameter, spring preload and stiffness, and the brake fluid gas content significantly influence the brake pedal feel and master cylinder performance.

Key words: vehicle engineering, brake master cylinder, hydraulic brake system, brake pedal feel, bulk modulus

中图分类号: 

  • U463.5
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