印制电路板环境应力筛选费用模型优化仿真  

Environmental Stress Screening Cost Model Optimization Simulation of Printed-circuit Board

作　　者：刘文杰[1] 金健[1] 张航军[1] 黄思涵 LIU Wenjie;JIN Jian;ZHANG Hangjun;HUANG Sihan(School of Mechanical Science and Engineering,HuaZhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《电子产品可靠性与环境试验》2018年第6期62-68,共7页Electronic Product Reliability and Environmental Testing

基　　金：高档数控系统关键共性技术创新能力平台(二期)(20152X04005007);配套国产数控系统的不台数控机床应用工程(2014ZX04015061);高档数控装备及工艺在大型整体航段集成制造中的示范应用(2015ZX04002202)项目资助

摘　　要：为了合理地制定环境应力筛选计划,选取合适的筛选时间,减少环境应力筛选费用,以印制电路板为例,使用威布尔分布描述其寿命特性,使用数值仿真的方法,建立了其环境应力筛选寿命周期总费用模型。研究费用模型的影响因素,以元器件级和组件级筛选时间为变量,以总费用最少为目标,使用粒子群算法求解此非线性约束最优化问题。通过仿真实例分析,证明了该方法可以求得最优的筛选时间;同时结果表明,提高应力筛选的加速因子和检测效率,有助于将产品中的次品剔除出去,提高产品的使用可靠性,减少总费用。研究结果可为合理地制定环境应力筛选计划提供基础。In order to make the environmental stress screening plan reasonably,select the appropriate screening time and reduce the cost of environmental stress screening,taking PCB as an example,Weibull distribution is used to describe its life characteristics,and its total cost model during the life cycle of environmental stress screening is established by numerical simulation.Besides,the influencing factors of the cost model are studied,and the particle swarm optimization is used to solve this nonlinear constraint optimization problem with component-level and assembly-level selection time as variabiles and the minimum total cost as the objective.Through simulation analysis,it is proved that the method can obtain the optimal screening time.At the same time,the results show that improving the acceleration factor and detection efficiency of stress screening is helpful to eliminate defective products,improve the reliability of products and reduce the total cost.The research results can provide a basis forformulating environmental stress screening plans reasonably.

关 键 词：印制电路板 环境应力筛选 费用优化 粒子群算法 

分 类 号：TB11.52[理学—数学] TP391.99[理学—应用数学]