Statistical pattern recognition for TWC diagnosis

Ted Kostek; Matthew Franchek

doi:10.4271/2005-01-1092

Statistical pattern recognition for TWC diagnosis

Ted Kostek, Matthew Franchek

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Ideas from statistical pattern recognition are applied to the problem of diagnosing degraded automotive three-way catalysts using oxygen sensors. A brief overview of statistical pattern recognition is given. A novel method of processing the oxygen sensor signals converts the time signals into ensembles of vectors. Using the tools of pattern recognition, the ensembles are described statistically, and classifiers are derived from the statistical descriptions. The resulting classifiers are tested against four different aging categories, and the performance is quantified via the operating characteristic. Techniques to achieve arbitrary levels of performance are discussed.

Original language	English
Title of host publication	SAE Technical Papers
DOIs	https://doi.org/10.4271/2005-01-1092
State	Published - Dec 1 2005
Event	2005 SAE World Congress - Detroit, MI, United States Duration: Apr 11 2005 → Apr 14 2005

Other

Other	2005 SAE World Congress
Country	United States
City	Detroit, MI
Period	4/11/05 → 4/14/05

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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abstract = "Ideas from statistical pattern recognition are applied to the problem of diagnosing degraded automotive three-way catalysts using oxygen sensors. A brief overview of statistical pattern recognition is given. A novel method of processing the oxygen sensor signals converts the time signals into ensembles of vectors. Using the tools of pattern recognition, the ensembles are described statistically, and classifiers are derived from the statistical descriptions. The resulting classifiers are tested against four different aging categories, and the performance is quantified via the operating characteristic. Techniques to achieve arbitrary levels of performance are discussed.",

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