کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
559818 | 875107 | 2009 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: An information-theoretic measure for anomaly detection in complex dynamical systems An information-theoretic measure for anomaly detection in complex dynamical systems](/preview/png/559818.png)
This paper presents information-theoretic analysis of time-series data to detect slowly evolving anomalies (i.e., deviations from a nominal operating condition) in dynamical systems. A measure for anomaly detection is formulated based on the concepts derived from information theory and statistical thermodynamics. The underlying algorithm is first tested on a low-dimensional complex dynamical system with a known structure—the Duffing oscillator with slowly changing dissipation. Then, the anomaly detection tool is experimentally validated on test specimens of 7075-T6 aluminum alloy under cyclic loading. The results are presented for both cases and the efficacy of the proposed method is thus demonstrated for systems of known and unknown structures.
Journal: Mechanical Systems and Signal Processing - Volume 23, Issue 2, February 2009, Pages 358–371