A fault tolerant model for multi-sensor measurement  

作　　者：Li Liang Shi Wei 

机构地区：[1]Information and Ecommerce Institute, University of Electronic Science & Technology of China [2]China Gas Turbine Establishment

出　　处：《Chinese Journal of Aeronautics》2015年第3期874-882,共9页中国航空学报（英文版）

基　　金：supported by the Aeronautical Science Foundation of China(No.20101024006)

摘　　要：Abstract Multisensor systems are very powerful in the complex environments. The cointegration theory and the vector error correction model, the statistic methods which widely applied in economic analysis, are utilized to create a fitting model for homogeneous sensors measurements. An algorithm is applied to implement the model for error correction, in which the signal of any sensor can be esti mated from those of others. The model divides a signal series into two parts, the training part and the estimated part. By comparing the estimated part with the actual one, the proposed method can iden tify a sensor with possible faults and repair its signal. With a small amount of training data, the right parameters for the model in real time could be found by the algorithm. When applied in data analysis for aero engine testing, the model works well. Therefore, it is not only an effective method to detect any sensor failure or abnormality, but also a useful approach to correct possible errors.Abstract Multisensor systems are very powerful in the complex environments. The cointegration theory and the vector error correction model, the statistic methods which widely applied in economic analysis, are utilized to create a fitting model for homogeneous sensors measurements. An algorithm is applied to implement the model for error correction, in which the signal of any sensor can be esti mated from those of others. The model divides a signal series into two parts, the training part and the estimated part. By comparing the estimated part with the actual one, the proposed method can iden tify a sensor with possible faults and repair its signal. With a small amount of training data, the right parameters for the model in real time could be found by the algorithm. When applied in data analysis for aero engine testing, the model works well. Therefore, it is not only an effective method to detect any sensor failure or abnormality, but also a useful approach to correct possible errors.

关 键 词：COINTEGRATION Fault tolerant MEASUREMENT MULTI-SENSOR Turbine engine 

分 类 号：V263.6[航空宇航科学与技术—航空宇航制造工程]