针床式测试仪的测试可靠性研究  

Reliability Analysis for Bed-of-nails Testing Fixture During Electrical Testing

作　　者：韩雷[1] Arkady S. Voloshin 

机构地区：[1]中南大学 [2]Lehigh University, Bethlehem, PA 18015

出　　处：《仪器仪表学报》2006年第3期224-228,236,共6页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50575230);科技部973计划(2003CB716202)资助项目

摘　　要：建立了线路板(PCB)测试中变形对应的二维图形变换模型,使用正态和W e ibu ll分布统计模型处理数据,成功用于针床式在线测试仪(B ed-of-na ils T esting F ix ture)可靠性定量评估,并由定量实测结果分析了针床测试仪对准误差的类型、大小及产生原因。A systematic,accurate and robust evaluating method is developed for printed circuit board （PCB） positioning assessment in bed-of-nails fixtures. Actual deformation of PCB is obtained based upon a reasonable mode. The combined accuracy and cause of the test lands positioning were estimated by Gaussian and Weibull distributions. Results will be helpful for reliability analysis of a bed of-nails test fixture.

关 键 词：PCB变形 测试焊区 测试仪 WEIBULL分布 

分 类 号：TN306[电子电信—物理电子学] TN606