中文摘要：

以某大功率船用齿轮箱传动系统为研究对象,在模糊理论与可靠性理论相结合的基础上,建立传动系统模糊可靠性优化模型。以各级齿轮副的齿数、模数、螺旋角、齿宽、传动比的分配为设计变量,综合考虑各设计参数和约束因素的随机性、边界模糊性,以整个传动系统体积最小为目标函数,进行模糊可靠性优化。结果表明,传动系统合理的设计参数,能显著减小体积,减轻重量,更符合工程实际。

英文摘要：

The transmission system of a high-power marine gearbox is analyzed,and the mathematical mod-el of fuzzy reliability optimization is established based on theories of fuzzy optimization and reliability de-sign.The number of pinion teeth,normal module,helix angle,the gear width mean and the velocity ratio distribution are regarded as design variables.Then considering the randomness and the boundary fuzziness of related design parameters and affecting factors and regarding the minimizing volume sum as objective function,the fuzzy reliability optimization is carried out.The result indicates that the reasonable design can markedly decrease the volume and the weight,and is suitable for engineering practice.