基于惩罚函数法的汽车动力传动系参数优化匹配分析

在建立发动机特性数学模型的基础上,以原地起步连续换档加速时间和多工况循环使用油耗作为衡量动力性和燃油经济的2个分目标,采用线性加权组合的方法将其转换成单一目标函数,建立了汽车动力传动系优化数学模型,利用惩罚函数法对此模型进行了优化,实例计算表明,应用该方法对汽车动力传动系进行优化匹配分析时,整车综合性能均有显著改善.

Optimization of the Adaptation between Engine and Transmission System of an Automobile Based on Punish Function Method

On the basis of engine idiocratic mathematical model, using the origin underway accelerate time and the oil consumption at the cycle of multi -working conditions as the objective functions of the power performance and the economy performance respectively, and then transform it to a single objective function by using the linear adding. Establishing the optimization mathematical model between engine and transmission system of an automobile,and optimizing this model by punish function method. A calculation example shows that optimization of the adaptation between engine and transmission system of an automobile by utilizing this method,the comprehensive performance of the automobile has been remarkably promoted.