Fault Detection over Signal-to-Noise Ratio Constrained Channels
作者单位：The Key Lab of Fieldbus and Automation Technology of Beijing North China University of Technology
会议名称：《第25届中国控制与决策会议》
主办单位：IEEE;NE Univ;IEEE Ind Elect Chapter;IEEE Harbin Sect Control Syst Soc Chapter;Guizhou Univ;IEEE Control Syst Soc;Syst Engn Soc China;Chinese Assoc Artificial Intelligence;Chinese Assoc Automat;Tech Comm Control Theory;Chinese Assoc Aeronaut;Automat Control Soc;Chinese Assoc Syst Simulat;Simulat Methods & Modeling Soc;Intelligent Control & Management Soc
会议日期：2013年
基 金：supported by National Nature Science Foundation under Grant 60876117 the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (CIT&TCD201304007) Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (PHR20110504)
关 键 词：Fault detection SNR residual generation residual evaluation
摘 要：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.