板级电路内建自测试建模技术研究
4. 结论
本文通过建立高速数据采集器的多信号流模型，对数据采集器进行了可测性分析与可测性设计，通过可测性设计其故障检测率和故障隔离率均达到100% ，在此基础上可以通过DSP 完成整个电路的自测试。本文的研究成果为提高电路的自测试能力奠定基础，可适应现场快速故障诊断和故障定位的需要。本文作者创新点:提出了一种板级电路内建自测试建模技术，针对原有电子系统增加内建自测试的可测性技术，并采用多信号流作为评估方法，通过实际系统验证了所提出方法的可行性和实际价值。
表4 测试名称及位置
表5 可测性改善对比表
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