汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (9): 1118-1124.doi: 10.19562/j.chinasae.qcgc.2018.09.017

• • 上一篇    

双排行星齿轮系统的齿轮优化修形*

张容川,周云山,胡哓岚,程建飞,傅兵,张飞铁   

  1. 湖南大学,汽车车身先进设计制造国家重点实验室,长沙 410082
  • 收稿日期:2017-08-11 出版日期:2018-09-25 发布日期:2018-09-25
  • 通讯作者: 张飞铁,博士,E-mail:Flyiron@126.com
  • 基金资助:
    国家自然科学基金(51475151)、湖南大学青年教师成长计划项目和新能源汽车国家2011协同创新中心与湖南省绿色汽车2011协同创新中心项目资助。
       原稿收到日期为2017年8月11日,修改稿收到日期为2017年10月20日

The Optimized Gear Modification for Double-row Planetary Gear Train

Zhang Rongchuan, Zhou Yunshan, Hu Xiaolan, Cheng Jianfei, Fu Bing & Zhang Feitie   

  1. Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha 410082
  • Received:2017-08-11 Online:2018-09-25 Published:2018-09-25

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摘要： 金属带式CVT中采用行星轮机构来实现前进挡与倒挡的切换,而双排行星轮机构因增加了一排行星轮导致系统自由度增加,激励也随之增加,从而增大了CVT在倒挡时的啸叫噪声。本文中以某款金属带式CVT为研究对象,通过噪声测试和阶次分析判断其倒挡噪声来源为行星齿轮系。为降低其倒挡时齿轮啸叫,对双排行星轮机构进行动力学分析。考虑了齿侧间隙,建立了非线性纯扭振模型,并以行星齿轮振动加速度方差为目标函数,采用遗传算法对行星齿轮修形量进行优化,并对优化后的齿轮进行实验验证。结果表明,齿轮优化修形提升了该CVT的声品质。

关键词: 无级变速器, 双排行星齿轮系统, 非线性动力学分析, 齿轮啸叫, 齿轮修形, 遗传算法优化

Abstract: Metal belt CVT uses planetary gear train (PGT) to fulfill the shifting between forward gear and reverse gear. Due to adding one row of planetary gear set, the degree-of-freedom of double-row PGT increases, leading to the intensification of excitation and the whine noise of CVT in reverse gear. In view of these, a metal-belt CVT is studied in this paper, and it can be inferred through noise measurement and order analysis that gear whine in reverse gear stems from PGT. In order to lower the gear whine in reverse gear, a kinetic analysis is conducted on double-row PGT. A nonlinear model for pure torsional vibration is developed with consideration of gear backlash, and an optimization on the magnitude of gear modification is performed using genetic algorithm with the vibration acceleration variance of planetary gears as objective function. The gears optimized are verified by tests with a result showing that the gear modification optimized enhances the sound quality of the CVT

Key words: CVT, double-row PGT, nonlinear kinetic analysis, gear whine, gear modification, GA optimization