Sensor fault estimation based on the constrained zonotopic Kalman filter

2021 ◽  
Author(s):  
Zixing Liu ◽  
Ziyun Wang ◽  
Yan Wang ◽  
Zhicheng Ji
Keyword(s):  
Kalman Filter ◽  
Fault Estimation ◽  
Sensor Fault ◽  
Sensor Fault Estimation

Adaptive Kalman filtering for sensor fault estimation and isolation of satellite attitude control based on descriptor systems

2019 ◽  
Vol 41 (6) ◽  
pp. 1686-1698 ◽  
Author(s):  
Mao Wang ◽  
Tiantian Liang
Keyword(s):  
Kalman Filter ◽  
Attitude Control ◽  
Unscented Kalman Filter ◽  
Fault Isolation ◽  
Descriptor Systems ◽  
Fault Estimation ◽  
Multiple Model ◽  
Sensor Fault ◽  
Systems Model ◽  
Sensor Fault Estimation

Sensor fault estimation and isolation is significant for an attitude control systems model of a satellite, as it works in a complex environment. The standard unscented Kalman filter algorithm may lose its accuracy when the noise is considerable. Therefore, an adaptive filtering algorithm is proposed based on the sampled-data descriptor model. The performance of the unscented Kalman filter in sensor fault estimation is improved by the adaptive algorithm depending on innovation and the measurement residual, and its convergence is guaranteed. Combining the adaptive unscented Kalman filter with the multiple-model adaptive estimation, a sensor fault isolation method is proposed. Finally, simulation examples show that this algorithm has better estimating accuracy and isolation results.

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