常开式离合器膜片弹簧的改进型遗传算法优化  

Optimization for Diaphragm Spring of Open Dry Clutch by Modified Genetic Algorithm

作　　者：史俊武[1] 李小伟[1] 张建武[1] 鲁统利[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2009年第2期208-212,共5页Journal of Shanghai Jiaotong University

基　　金：国家高技术研究发展计划(863)项目(2006AA110110)

摘　　要：介绍了常开式离合器与常闭式离合器的区别,分析了常开式离合器膜片弹簧的工作特性,建立了满足设计要求的多目标的优化模型,提出了交叉概率与变异概率随适应度变化而自行调整、同时对重复个体进行二次交叉操作的改进型遗传算法,并对膜片弹簧优化模型进行求解.应用结果证明,该方法收敛速度快,并能突破局部收敛达到全局最优解.Open dry clutches applied in dual clutch transmission （DCT） system are possessed of critical importance in realization of automatic transmission of vehicles with smoothness and without power interruption. In comparison with normally closed clutch, the open dry clutch is different in its structure and working principle. To the satisfaction of design requirements matching to real well-arranged performance, a multi-object optimization model was proposed, and a modified genetic algorithm （MGA） was then developed to obtain optimum design solution of the diaphragm spring of the open dry clutch based on self-adaptive probability of crossover and mutation and second crossover operations. The use of MGA in the optimum design for diaphragm spring of open dry clutch shows that this algorithm converges quickly, and can easily overcome the local convergence weakness and get the entire optimal result.

关 键 词：常开式离合器 膜片弹簧 改进遗传算法 优化设计 

分 类 号：U463.211[机械工程—车辆工程]