摩擦迟滞影响下分动器动力传递特性模型

doi:10.3901/JME.2020.10.154

机械工程学报 ›› 2020, Vol. 56 ›› Issue (10): 154-162.doi: 10.3901/JME.2020.10.154

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摩擦迟滞影响下分动器动力传递特性模型

王钰明¹, 李洪亮¹, 陈黎卿², 王其东³, 吕先洋¹

1. 南通大学交通学院南通 226019;
2. 安徽农业大学工学院合肥 230036;
3. 合肥工业大学机械与汽车工程学院合肥 230009

收稿日期:2019-05-08 修回日期:2019-12-03 出版日期:2020-05-20 发布日期:2020-06-11
通讯作者: 陈黎卿(通信作者),男,1979年出生,博士,教授。主要研究方向为汽车底盘集中控制。E-mail:lqchen@ahau.edu.cn
作者简介:王钰明,男,1986年出生,博士研究生。主要研究方向为分动器动力学控制。E-mail:wangyuming@ntu.edu.cn
基金资助:
国家重点研发计划（2017YFD0301303）、江苏省大学生创新训练计划（201710304079Y）和南通市科技计划（MS1201800）资助项目。

Transfer Case Transmission Performance Model under the Influence of Friction Lag

WANG Yuming¹, LI Hongliang¹, CHEN Liqing², WANG Qidong³, Lü Xianyang¹

1. School of Transportation and Civil Engineering, Nantong University, Nantong 226019;
2. College of Engineering, Anhui Agricultural University, Hefei 230036;
3. School of Mechanical and Automobile Engineering, Hefei University of Technology, Hefei 230009

Received:2019-05-08 Revised:2019-12-03 Online:2020-05-20 Published:2020-06-11

摘要/Abstract

摘要： 分动器是智能四驱汽车的关键部件，关于其性能研究较多从机械传动角度考虑，对摩擦片与对偶钢片接触引起的微观性能研究不多。针对这一问题，建立分动器静力学和动力学模型，分析润滑油挤压力和流体弹性动力学模型对摩擦因数的影响，计算出分动器在摩擦片与对偶钢片接合和分离过程中的转矩变化情况。结果表明，摩擦片与对偶钢片接合和分离过程中摩擦因数并非定值，而是会随接合和分离产生一定的波动，导致分动器传递的转矩产生将近10 N·m的差距。分析挤压力和油膜厚度的关系，得到在加速过程中，油膜挤压力对油膜厚度产生消极的作用，导致加速过程中的油膜厚度相对于恒定状态下的油膜厚度较小；在减速过程中情况相反，油膜挤压力对油膜厚度产生积极的影响，从而导致传递的粗糙转矩变小，最终形成了摩擦迟滞环。摩擦迟滞环的面积代表加速和减速过程中两者传递转矩的差值，其成果将为分动器的精确控制提供了理论依据。

关键词: 分动器, 多片式离合器, 动力传递, 摩擦迟滞, 试验测试

Abstract: The performance of transfer case as an essential component of intelligent four-wheel drive is studiedmostly from the perspective of mechanical transmission, and the micro-performance caused by the contact between friction plate and steel disk is normally ignored. To address this gap, the static and dynamicmechanical models related to transfer caseare bothconstructed, the influence of lubricating oil squeeze force and hydroelastic dynamic model on friction coefficient is studied, and the friction coefficient is introduced into the torque transfer model to calculate the torque variation of the transfer case in the process of contacting and separating the friction plate and the steel plate. Results show that the friction coefficient fluctuates in the process of contacting and separating the friction plate and the steel disk, which can lead to a difference related to the torque transfer of the actuator by approximately 10 N·m. By analyzing the relationship between squeeze force and oil film thickness, it is found that the oil film squeeze force has a negative effect on the oil film thickness in the acceleration process, thus the oil film thickness is smaller than thatunder the stationary condition. On the contrary, the film squeeze force has a positive effect on the film thickness during the deceleration process, which leads to the reduction of the asperity torque transmitted and the formation of a friction hysteresis lag loop. The area of friction hysteresis lag loop represents the difference between torques during acceleration and deceleration. This research can provide a theoretical basis for the accurate control of the transfer case.

Key words: transfercase, multi-plate clutch, power transfer, friction lag, experimental test

中图分类号:

TG132

王钰明, 李洪亮, 陈黎卿, 王其东, 吕先洋. 摩擦迟滞影响下分动器动力传递特性模型[J]. 机械工程学报, 2020, 56(10): 154-162.

WANG Yuming, LI Hongliang, CHEN Liqing, WANG Qidong, Lü Xianyang. Transfer Case Transmission Performance Model under the Influence of Friction Lag[J]. Journal of Mechanical Engineering, 2020, 56(10): 154-162.

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摩擦迟滞影响下分动器动力传递特性模型

Transfer Case Transmission Performance Model under the Influence of Friction Lag

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