联合收割机割刀驱动行星轮系多目标优化设计

摘要

Aiming at the working characteristics of sickle mechanism of combined harvesters,the working principle of sickle mechanism was analyzed using mainly 2K-H type planetary gear mechanism.Through establishing optimization design model of 2K-H type planetary gear mechanism,applying NSGA-2 algorithm for the multi-objective optimization design of 2K-H type planetary gear mechanism,thinking the smallest size and highest carrying capacity as the optimization design goal,through developing the MATLAB program,Pareto frontier was got and then obtained the optimal solution,compared with the past multi-objective design,the design has been very good improvement.%针对联合收割机割刀机构的工作特点,采用2K-H型行星齿轮机构,分析了割刀机构工作原理。通过建立2K-H型行星轮系的优化设计模型,应用NSGA-2算法对2K-H型行星齿轮机构进行多目标优化设计。以最小体积和最大承载力为优化设计目标,通过编制MATLAB程序得到Pareto前沿,进而得到最优解,与以往多目标优化设计比较,设计得到了很好的改善。