圆柱齿轮减速器可靠性优化设计

Reliability Optimization Design of Straight-Tooth Cylindrical Gear Decelerator

本文将圆柱齿轮减速器看作一个由不可修复零件组成，具有多种故障的可修复系统。按照减速器的一般设计步骤，把设计参数处理成随机变量，并将可靠性设计与优化设计相结合，提出了圆柱齿轮减速器可靠性优化设计的方法和原则。同时采用非线性混合离散变量组合形的优化方法，对单级直齿圆柱齿轮减速器进行了可靠性优化计算，取得了满足可靠度要求的优化结果。本文还就如何建立工程设计上适用的可靠性优化设计数学模型，提出了见解。

In this paper, the cylindrical gear decelerator is regarded as a repairable system for many faults containing some unrepairable elements. According to the normal design procedure, the design parameters are processed into random variables and the combination of reliability design and optimization design are performed in this paper to provide the reliability optimization design method and principle of cylindrical gear decelerator. In the meantime,the reliability optimization calculation of one-stage straight-tooth cylindrical gear decelerator by means of the optimal method of nonlinear mixed discrete variable combination is successful. In addition, some views concerning how to establish mathematical model of reliability optimization design suitable for engineering design are proposed in this paper.