Fault Detection and Diagnosis for Sensor in Complex Control System Based on KPCA

Abstract:

The Fault detection and diagnosis for sensors are important for the performance of the complex control system seriously. The kernel principal component analysis (KPCA) effectively captures the nonlinear relationship of the process variables, which computes principal component in high-dimensional feature space by means of integral operators and nonlinear kernel functions. The KPCA method is used in diagnosing for four common sensor faults. At first its fault is detected by Q statistic; secondly its fault is identified by T2 contribution percent change. The simulation and the practical result show the KPCA method has good performance on complex control system in sensor fault detection and diagnosis.

• Periodical: Applied Mechanics and Materials (Volume 623)
• Pages: 202-210
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.623.202
• Online since: August 2014
• Authors: Ping Xu*, You Cai Wang, Kai Wang, Qiu Yan Wang
• Keywords: Complex Control System, Diagnosis, Fault Detection, Kernel Principal Component Analysis (KPCA), Sensor

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