• CN:11-2187/TH
  • ISSN:0577-6686

›› 2009, Vol. 45 ›› Issue (5): 281-284.

• 论文 • 上一篇    下一篇

汽车环面型无级变速器结构参数优化设计

何辉波;李华英;秦大同;何培祥   

  1. 西南大学工程技术学院;国立庆尚大学机械航空工学部;重庆大学机械传动国家重点实验室
  • 发布日期:2009-05-15

Optimization Design for Structural Parameters of Toroidal CVT for Automobiles

HE Huibo; LI Huaying;QIN Datong; HE Peixiang   

  1. College of Engineering and Technology, Southwest University School of Mechanical & Aerospace Engineering, Gyeongsang National University The State Key Laboratory of Mechanical Transmission, Chongqing University
  • Published:2009-05-15

摘要: 在分析环面型无级变速器(Continuously variable transmission, CVT)的速比变化、接触参数基础上,提出以考虑环面半径最小和在整个传动比范围内平均传动效率最大为追求目标的多目标优化设计,并以膜厚比、接触强度以及不干涉等为约束条件,建立环面无级变速器结构参数优化设计数学模型。求解时,以多目标优化法中的乘除法建立评价函数,用Matlab软件中基于二次序列规划(Sequential quadratic programming, SQP)优化算法的Fmincon函数对优化数学模型进行求解。分析实例表明,优化后环面半径、环腔半径减小,CVT体积更小,结构更紧凑,传动效率明显提高。该优化设计方法能够有效提高环面型无级变速器的综合性能。

关键词: 传动比, 环面无级变速器, 结构参数, 优化设计

Abstract: The optimization design model of structural parameters of toroidal continuously variable transmission (CVT) is established on the basis of analysis of its transmission ratios and contact parameters. The minimum cavity radium and the maximum average efficiency in the whole range of the transmission ratios are taken as objective functions, which oil film thickness and contact strength et al. are considered as constraint conditions. The evaluation function is established by using the multiplication-division method in the multi-objective optimization method, and structural parameters can be obtained by using Fmincon function in the Matlab software based on sequential quadratic programming(SQP) algorithm. The analysis results show that the cavity radius is reduced, the CVT becomes compacter, and the transmission efficiency is improved. This optimal design can improve the comprehensive capacity of this kind of CVT effectively.

Key words: Optimization design, Structural parameters, Toroidal continuously variable transmission, Transmission ratio

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