航空齿轮减速器稳健优化设计研究

航空齿轮减速器通常对重量、强度、效率以及可靠性有极高的要求,考虑到其所处工况的随机性、工艺水平的差异性以及材料强度等力学性能参数的波动性,传统的确定性参数优化设计已不能满足工程实际的需求。在传统的确定性优化设计模型的基础上,基于6σ稳健设计基本理论建立齿轮传动系统的多目标稳健设计优化模型,并采用NSGA-Ⅱ多目标优化算法进行求解;以某航空齿轮减速器中单级斜齿圆柱齿轮系统为研究对象进行实例分析。结果表明:本文提出的基于6σ稳健设计理论的齿轮传动系统优化模型充分考虑了不确定性因素对优化的影响,具有一定的工程应用价值。

Study on Robust Design for Aviation Gear Reducer

Aviation gear reducer usually has high requirements for weight, strength, reliablity and efficiency. Considering the random characteristic of working conditions, the difference of technological level and the fluctuation of mechanical parameters such as material strength, the traditional deterministic parameter optimization design can not meet the needs of engineering practice. On the foundation of traditional deterministic optimization model, the multi-objective robust design optimization model of gear drive system is developed in this paper based on the basic theory of robust design of 6 sigma, and the Pareto solutions are obtained using NSGA-II multi-objective optimization algorithm. Subsequently, robust optimization for a single-stage helical gear system in an aviation gear reducer is carried out. The results show that the robust design model presented in this paper gives full consideration to the impact of uncertainty on optimization and has certain value for engineering application.