辽宁工程技术大学学报（自然科学版）Issue(2)：227-231,5.
基于信号功率谱的模拟电路嵌入式测试
Analogue circuit embedded test based on signal power spectrum
摘要
Abstract
In order to do self-testing within analogue circuit, an embedded test method based on signal power spectrum is proposed. Both the input and output signals of the circuit under test are sampled using a sampler which consists of a voltage comparator. As a result two digital signal series are obtained. The power spectrum density ratio between output series and input series is then computed using maximum entropy spectrum estimation algorithm. The ratio value is compared with that of fault-free circuit to identify the circuit faulty status. A filter circuit is tested on a DSP analogue circuit test platform to verify the method. The result shows that the method can effectively detect the faults in the circuit, and the hardware construction is simple. Therefore, it is applicable for embedded test.关键词
模拟电路/嵌入式测试/故障诊断/功率谱密度/自相关函数/采样器/最大熵谱/数字信号处理器Key words
analogue circuit/ embedded test/ fault diagnosis/ power spectrum density/ autocorrelation function/ sampler/ maximum entropy spectrum/ digital signal processor分类
信息技术与安全科学引用本文复制引用
郑致刚,胡云安..基于信号功率谱的模拟电路嵌入式测试[J].辽宁工程技术大学学报（自然科学版）,2012,(2):227-231,5.基金项目
军队装备维修改革基金资助项目(1161232) （1161232）
