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<title>Health Assessment of Electronic Products using
Mahalanobis Distance and Projection Pursuit
Analysis
</title></head>
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<center><i>International Journal of Computer, Information, and Systems Science, and Engineering 2;3 © www.waset.org Fall 2008</i>

<br><h2>Health Assessment of Electronic Products using
Mahalanobis Distance and Projection Pursuit
Analysis
</h2>
<br><br><b>Sachin Kumar</b><br><b>Vasilis Sotiris</b><br><b>Michael Pecht</b><br>
Center for Advanced Life Cycle Engineering (CALCE)<br>
University of Maryland<br>
College Park, MD 20742, USA<br><br>


</center>

<b>Abstract:</b>

<p>With increasing complexity in electronic systems
there is a need for system level anomaly detection and fault isolation.
Anomaly detection based on vector similarity to a training set is used
in this paper through two approaches, one the preserves the original
information, Mahalanobis Distance (MD), and the other that
compresses the data into its principal components, Projection Pursuit
Analysis. These methods have been used to detect deviations in
system performance from normal operation and for critical parameter
isolation in multivariate environments. The study evaluates the
detection capability of each approach on a set of test data with known
faults against a baseline set of data representative of such “healthy”
systems.
</p>

<p><b>Index Terms:</b> Mahalanobis distance, Principle components,
Projection pursuit, Health assessment, Anomaly</p>

<p><a href="../../fulltext/2008/health_assessment_mahalanobis_distance.pdf">Complete article</a> is available to CALCE PHM Consortium Members.</p>


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