面向成本和功能的舱门锁闩机构公差设计优化方法  

An Optimization Method for Tolerance Design of Door Latch Mechanism Based on Cost and Function

作　　者：陈涛 王玖 张健 CHEN Tao;WANG Jiu;ZHANG Jian(Chengdu Aircraft Industrial Group Co.,Ltd.,Chengdu 610092,China)

机构地区：[1]成都飞机工业(集团)有限责任公司,四川成都610092

出　　处：《飞机设计》2021年第5期16-20,共5页Aircraft Design

摘　　要：在货舱门锁闩机构方案设计阶段进行公差设计优化,建立了锁闩机构的多体运动学模型,通过蒙特卡洛法分析出连杆组件和定位特征的公差对系统功能和精度影响大。建立成本与公差的模型,以此为优化目标进行遗传算法迭代优化公差分配,低成本地提高了系统的输出精度,嵌套蒙特卡洛法的遗传算法为舱门锁闩机构的详细设计和公差分配提供了理论依据。Research tolerance design optimization in conceptual design stage of cargo door latch mechanism system,a multi-body kinematics model of latch mechanism is established,through the Monte Carlo method analysis to get that the tolerance of connecting rod component and intersection point position affects the system function and accuracy seriously,the model of cost and tolerance is established,by genetic algorithm to optimize the target of tolerance allocation,improve the output precision of the system at low cost,provides the theoretical basis of tolerance allocation for the cargo door latch mechanism design.

关 键 词：货舱门 锁闩机构 公差设计 蒙特卡洛法 遗传算法 

分 类 号：TG801[金属学及工艺—公差测量技术]