(625e) Fault Detection and Diagnosis of Continuous Processes Via Non-Linear Support Vector Machine Based Feature Selection
AIChE Annual Meeting
Wednesday, November 1, 2017 - 4:23pm to 4:40pm
In this work, we present the application of a novel non-linear (kernel-dependent) SVM-based feature selection algorithm [7-8] to process monitoring and fault detection of continuous processes. The developed methodology is derived from sensitivity analysis of the dual SVM objective and utilizes existing and novel greedy algorithms to rank features that also guides fault diagnosis. Specifically, we train two-class SVM models to detect known faults and use one-class support vector data descriptors to characterize normal operations. Here, the manipulated and measured variables of the process constitute the input feature space, and instances of normal and faulty operation yield training samples for our SVM models. The feature selection algorithm is used to improve the accuracy of fault detection models and perform fault diagnosis. We present results for the Tennessee Eastman process  as a case study and compare our approach to existing approaches for fault detection and diagnosis.
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