航空航天用CQFP封装复杂集成电路振动夹具优化设计  

Optimized design of vibration fixture for CQFP packaged complex integrated circuit used in aerospace

作　　者：王小强[1,2] 李斌[1] 邓传锦[2] 罗军[2] 余永涛 WANG Xiaoqiang;LI Bin;DENG Chuanjin;LUO Jun;YU Yongtao(School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,China;The Fifth Electronics Research Institute of the Ministry of Industry and Information Technology,Guangzhou 511370,China)

机构地区：[1]华南理工大学电子与信息学院,广州510640 [2]工业和信息化部电子第五研究所,广州511370

出　　处：《航天器环境工程》2021年第6期662-669,共8页Spacecraft Environment Engineering

基　　金：广东省重点领域研发计划资助项目(编号:2020B0404030005)。

摘　　要：针对航空航天对复杂集成电路振动试验的严酷条件以及芯片封装的复杂特性,文章以某航空航天用CQFP228封装复杂集成电路振动夹具设计为实例,采用基于ANSYS Workbench软件的拓扑优化和多目标遗传算法(MOGA)对振动夹具进行结构设计优化,并对夹具结构进行扫频振动及随机振动响应仿真分析,最后通过试验证明了夹具设计的有效性及合理性,有效解决了集成电路夹具设计中容易出现的试验共振、动态响应差和夹具质量过大等问题。In view of the harsh conditions of the vibration test of the complex integrated circuits used in aerospace and the complex characteristics of the chip packaging,this paper presents the optimization design of the vibration fixture,with a complex integrated circuit packaged with the CQFP228 for the aerospace usage as an example,using the ANSYS Workbench software based on the topology optimization and the multi-objective genetic algorithm(MOGA).The sweep frequency vibration and the random vibration response of the fixture structure are simulated and analyzed.Finally,the applicability and the rationality of the design are verified by experiments,which is shown to be able to solve the problems of the test resonance,the poor dynamic response and the excessive fixture weight.

关 键 词：集成电路 夹具设计 结构优化 多目标遗传算法 振动响应 仿真分析 

分 类 号：V216.21[航空宇航科学与技术—航空宇航推进理论与工程] V416.2