改进遗传算法在NGW行星齿轮传动可靠性优化设计中的应用

Application of Improved Genetic Algorithm in Reliability Optimization Design of NGW Planetary Gear Transmission

采用浮点编码的遗传算法与动态罚函数结合的方法解决约束优化设计问题,并在遗传算法中引入迁移策略,以加快全局最优解的搜索。将改进后的遗传算法应用于NGW行星齿轮传动可靠性优化设计,优化过程证明,在可行域搜索全局最优解能力明显优于常规优化设计方法,使行星齿轮的各项尺寸参数得到改进,传动稳定性和效率得到了提高。

A new method combined a floating - point encoding genetic algorithm with dynamic penalty function is solved the constraint problems, and migration strategy is introduced in the genetic algorithm to speed up the search of the global optimal solution. Besides, the improved genetic algorithm is applied to reliability optimization design of NGW planetary gear transmission. It is showed that the ability to search the global optimal solution of improved genetic algo- rithm in the feasible region is superior to the conventional optimization design method. Therefor, the size paran^eters of the planetary gear are improved, as much as the driving stability and efficiency.