期刊
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
卷 18, 期 1, 页码 387-396出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TII.2021.3063838
关键词
Estimation; Covariance matrices; Noise measurement; Kalman filters; State-space methods; Mathematical model; Gaussian distribution; Sensor fault estimation; state estimation; unknown fault coefficient matrix; unknown noise statistics; variational Bayesian (VB) inference
类别
资金
- 111 Project [B12018]
- National Natural Science Foundation of China [61991402, 61973136, 61833007]
- Research Project of Jiangnan University [JUSRP12028, JUSRP12040]
- Natural Sciences and Engineering Research Council of Canada [TII-20-5763]
A new sensor fault estimation algorithm is proposed for industrial processes described by linear discrete-time systems in this article. By performing variational Bayesian inference, the potential sensor fault and system states are estimated simultaneously in a probabilistic framework. It is demonstrated through numerical simulations and experimental tests on a hybrid tank system that the proposed method is efficient and superior.
In this article, a new sensor fault estimation algorithm is proposed for industrial processes described by linear discrete-time systems, where the fault dynamics are modeled as a stochastic process. By performing the variational Bayesian inference, the potential sensor fault, as well as the system states, is estimated simultaneously in a probabilistic framework. It is shown that the target fault signal can be satisfactorily estimated through the proposed method, without knowing the statistics of measurement noise and fault coefficient matrix. The efficiency and superiority of the proposed method are demonstrated through numerical simulations and experimental tests performed on a hybrid tank system.
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