Adaptive sensor fault detection and identification using particle filter algorithms

Authors:
Tao Wei;Yufei Huang;C. L. Philip Chen
Affiliations:
Limitless Horse Power LLC, Coral Springs, FL and Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX;Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX;Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX
Venue:
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Year:
2009

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Abstract

Sensor fault detection and identification (FDI) is a process of detecting and validating sensor's fault status. Because FDI guarantees system reliable performance, it has received much attention recently. In this paper, we address the problem of online sensor fault identification and validation. For a physical sensor validation system, it contains transitions between sensor normal and faulty states, change of system parameters, and a fusion of noisy readings. A common dynamic state-space model with continuous state variables and observations cannot handle this problem. To circumvent this limitation, we adopt a Markov switch dynamic state-space model to simulate the system: we use discrete-state variables to model sensor states and continuous variables to track the change of the system parameters. Problems in Markov switch dynamic state-space model can be well solved by particle filters, which are popularly used in solving problems in digital communications. Among them, mixture Kalman filter (MKF) and stochastic M-algorithm (SMA) have very good performance, both in accuracy and efficiency. In this paper, we plan to incorporate these two algorithms into the sensor validation problem, and compare the effectiveness and complexity of MKF and SMA methods under different situations in the simulation with an existing algorithm-- interactive multiple models.