阻抗元件在线测试的误差分析  

The error analysis of in-circuit test for impedance component

作　　者：刘思久[1] 于小秋[1] 

机构地区：[1]哈尔滨工业大学电气工程系,哈尔滨150001

出　　处：《电测与仪表》2004年第7期13-16,共4页Electrical Measurement & Instrumentation

摘　　要：计算机和虚拟仪器的发展为PCB在线测试提供了更为灵活的实现方式。针对此种情况,本文从阻抗元件在线测试的基本原理出发,通过系统分析和方框图变换,讨论了在线测试的误差来源,建立了适于不同元件参数条件的测试方案,并通过仿真实验予以验证,从而为实际PCB自动测试设备的开发提供了切实的依据。The development of computer and virtual instrument has provided some new ways for PCB In-circuit test.This paper begins from the principle of circuit and test, by means of system analyses and block diagram algebra,discusses the error source of in-circuit testing process.Poses a couple of practice testing method for variant component parameters.It also makes some evaluation by circuit simulation,so build a found for the design of PCB automatic testing equipment.

关 键 词：在线测试 印刷电路板 PCB 误差分析 虚拟仪器 阻抗元件 仿真 

分 类 号：TN41[电子电信—微电子学与固体电子学]