Title :
Fault detection over signal-to-noise ratio constrained channels
Author :
Li Zhi-jun ; Guo Fu-Min ; Sun De-hui ; Han Cun-Wu
Author_Institution :
Key Lab. of Fieldbus & Autom. Technol. of Beijing, North China Univ. of Technol., Beijing, China
Abstract :
In this paper, the fault detection problem of feedback control systems with Signal-to-Noise Ratio (SNR) constrained channels is studied. A residual generation based on system model is designed to guarantee the best trade-off between sensitivity to fault and robustness to system disturbance as well as channel noise. A norm-based residual evaluation function is used and an on-line dynamic threshold is provided. Then the false alarm rate of designed threshold can be computed with the assistance of Chebyshev´s inequality. Simulation results show the effectiveness of the proposed method.
Keywords :
control system synthesis; fault diagnosis; feedback; Chebyshev inequality; SNR constrained channel; channel noise; false alarm rate; fault detection; fault sensitivity; feedback control system; norm-based residual evaluation function; online dynamic threshold; residual generation; signal-to-noise ratio constrained channel; Automation; Conferences; Fault detection; Feedback control; Networked control systems; Signal to noise ratio; Simulation; Fault detection; SNR; residual evaluation; residual generation;
Conference_Titel :
Control and Decision Conference (CCDC), 2013 25th Chinese
Conference_Location :
Guiyang
Print_ISBN :
978-1-4673-5533-9
DOI :
10.1109/CCDC.2013.6561834
