Invention Application
- Patent Title: FAULT DETECTION SYSTEM UTILIZING DYNAMIC PRINCIPAL COMPONENTS ANALYSIS
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Application No.: US15811477Application Date: 2017-11-13
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Publication No.: US20180136019A1Publication Date: 2018-05-17
- Inventor: ALISHA DESHPANDE , SI-ZHAO J. QIN , LISA ANN BRENSKELLE
- Applicant: Chevron U.S.A. Inc. , University of Southern California
- Applicant Address: US CA San Ramon US CA Los Angeles
- Assignee: Chevron U.S.A. Inc.,University of Southern California
- Current Assignee: Chevron U.S.A. Inc.,University of Southern California
- Current Assignee Address: US CA San Ramon US CA Los Angeles
- Main IPC: G01D18/00
- IPC: G01D18/00 ; G06F17/16 ; G06F17/18

Abstract:
Methods and systems for detecting a fault in a data set from an industrial process are disclosed. One method includes forming a first data matrix at a data processing framework from time-series training data, and performing a principal component pursuit on the first data matrix to form an uncorrupted, unscaled matrix and a sparse matrix in the memory, and scaling the uncorrupted, unscaled matrix to form an uncorrupted scaled matrix. The method also includes performing a dynamic principal component analysis (DPCA) on the uncorrupted scaled matrix to form a DPCA model, and determining a squared prediction error from the DPCA model. Based on the squared prediction error, faults are detected in a different data set from operation of the industrial process. At least one of (1) correcting the one or more faults in the different data set or (2) performing a repair operation on a sensor is performed.
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