Wavelet based approach for analog filter fault detection

被引：0
|
作者：
Huang, Jiaoying [1 ]
He, Yigang [1 ]
Zha, Wenshan [1 ]
Yang, Hui [1 ]
机构：
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China
来源：
DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS-SERIES B-APPLICATIONS & ALGORITHMS | 2007年 / 14卷
关键词：
wavelet transform; analog filer; fault detection; dynamic supply current (IDD);
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A method for analog filter fault detection based on wavelet transform of dynamic supply current (IDD) is presented. The pole/zero locations in the frequency response of analog filters shift due to change in component values with process variations. Wavelet transform of supply current can be a promising alternative to test frequency specification of analog filters, since it needs only one ac stimulus and is virtually unaffected by transistor threshold variation. Simulation results on the test circuit demonstrate that we can estimate pole/zero shift with less than 4% error using only one measurement, which requires about 14 measurements in the conventional technique.
引用
收藏
页码：526 / 530
页数：5
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