自动张紧器迟滞特性计算与试验分析

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摘要以发动机前端附件驱动系统的自动张紧器为研究对象，分析张紧器摩擦副摩擦力矩的产生机理，建立张紧器在动静态激励下迟滞特性的计算模型，分析了各个摩擦副对张紧器摩擦力矩的贡献和区别了双阻尼件的作用。开展张紧器的耐久试验和在不同激励下的迟滞特性试验，验证了模型的正确性。研究张紧器在准静态激励下不同工作位置的输出力矩的计算结果和试验结果的误差与动摩擦因数的关系，提供用于优化计算结果的动摩擦因数的取值方法，分析了不同激励参数对张紧器迟滞特性的影响。本文的模型可有效预测张紧器的迟滞特性，获得张紧器的输出力矩、阻尼比等性能参数，对张紧器的设计开发具有工程意义。

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	郭三本1
	李广龙1
	李利平1
	上官文斌1
	龙尚斌1
	魏水生2
	王军成2

关键词 ：自动张紧器, 迟滞特性, 模型, 摩擦力矩, 试验

Abstract：An automatic tensioner used in an engine front end accessory drive system was taken as a study object.The friction torque of friction pairs in tensioner was analyzed and a computational model was established to calculate the hysteresis characteristics of the tensioner under dynamic and static excitation.The contribution of each friction pair to the friction torque was analyzed and the role of the double dampers was distinguished.Experiment of the hysteresis characteristics of the tensioner under different excitation and the durability test were carried out to validate the presented model.The errors between the result of calculation and measurement for the output torque of the tensioner at different working positions under the static excitation were studied by different sliding friction factors.Meanwhile the method for choosing the sliding friction factor was given to optimize the calculating result.The influence of excitation parameters on the hysteresis characteristics of tensioner was investigated.The model presented in the paper can effectively predict the hysteresis characteristics of the tensioner.It is helpful to acquire the performance parameters such as the output torque and damping ratio and to make some engineering significance for the design of the tensioner.

Key words： automatic tensioner hysteresis characteristics model friction torque experimental test

收稿日期: 2019-07-18 出版日期: 2020-12-15

引用本文:

郭三本1，李广龙1，李利平1，上官文斌1，龙尚斌1，魏水生2，王军成2. 自动张紧器迟滞特性计算与试验分析[J]. 振动与冲击, 2020, 39(24): 278-286.
GUO Sanben1, LI Guanglong1, LI Liping1, SHANGGUAN Wenbin1, LONG Shangbin1, WEI Shuisheng2, WANG Juncheng2. Calculation and experimental analysis of the hysteretic behavior of an automatic tensioner. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(24): 278-286.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I24/278

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