摘要
为增强液压机械无级变速器(HMCVT)在车辆领域的实用性,提出一种基于改进模拟退火算法和遗传算法的汽车用HMCVT传动参数优化设计新方法。研究以轻型载货车辆为例。新方法考虑传动效率最大化、传动特性匹配车辆设计需求以及轻量化3个方面,采用二级式的方法对某三段式HMCVT进行传动参数优化设计。具体来说,采用遗传算法以传动效率和传动特性最优为目标对行星排特性参数以及齿轮副传动比共10个第一级参数进行优化设计;采用改进模拟退火算法以轻量化为目标对齿轮齿数、模数、螺旋角以及齿宽共33个第二级参数进行优化设计。优化设计结果表明,提出的设计新方法优化效果较佳,能在很大程度上提高HMCVT的设计效率;变速器平均传动效率提高5%;传动特性能较好匹配车辆行驶需求,设计误差为0. 62%;变速器轻量化效果明显。
In order to enhance the practicability of hydraulic mechanical continuously variable transmission( HMCVT) in the field of vehicle,a new method based on improved simulated annealing algorithm and genetic algorithm for optimal design of transmission parameters of automobile HMCVT is presented in this paper. In this paper,a light cargo vehicle is taken as an example. The new method takes into account three aspects: maximum transmission efficiency, matching vehicle design requirements with transmission characteristics and lightweight. The two-stage method is used to optimize the transmission parameters of a three-stage HMCVT. Specifically,10 first stage parameters of planetary characteristic and gear pair transmission ratio are optimized by using genetic algorithm to optimize transmission efficiency and transmission characteristics;33 secondary parameters of gear tooth number,modulus,helical angle and tooth width with the aim of lightening are optimized by using improved simulated annealing algorithm. The results of optimization design show that the new design method proposed in this paper has better optimization effect and can improve the design efficiency of HMCVT to a great extent;average transmission efficiency increased by 5%;the transmission performance can match vehicle driving requirements,and the design error is 0. 62%;the light weight effect of transmission is obvious.
作者
程准
郑诗强
钱煜
鲁植雄
张海军
CHENG Zhun;ZHENG ShiQiang;QIAN Yu;LU ZhiXiong;ZHANG HaiJun(College of Engineering,Nanjing Agricultural University,Nanjing 210031,China)
出处
《机械强度》
CAS
CSCD
北大核心
2020年第1期61-66,共6页
Journal of Mechanical Strength
基金
国家重点研发计划(2016YFD0701103)
江苏省研究生科研创新计划(KYCX17_0647)资助。
关键词
液压机械无级变速器
改进模拟退火算法
遗传算法
传动效率
轻量化
优化设计
Hydraulic mechanical continuously variable transmission
Improved simulated annealing algorithm
Genetic algorithm
Transmission efficiency
Lightweighting
Optimum design
