汽车传动系参数优化的改进遗传算法

Research of improved GA algorithm on automobile transmission parameter

研究了六工况试验条件下,取主减速比和变速器传动比为设计变量,根据传动系的特点构造初始方程和变量分组准则,利用改进GA算法对汽车传动系参数优化问题建立数学模型。进而调整各参数,实现各参数优化匹配问题多解的求解方法,并用MATLAB软件来实现, 实现了汽车设计中“确保经济性,提高动力性”的优化目标。

In this paper, under the experimental condition of six operating modes, the main reducing ratio and the derailleur transmission ration are selected as design variables and based on the characteristics of transmission department, the initial equations and the criterions that divide variables into groups are constructed. By utilizing improved GA algorithm, the mathematical model is set up to parameter optimization questions of transmission department. So,the parameters are adjusted. The solution methods to find many solutions of parameter optimization matches are found. The solution software is compiled with Matlab. Optimization goal that guarantee economics and improve power quality is realized in the dedign of automobile.