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On extended state based Kalman filter design for a class of nonlinear time-varying uncertain systems
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On extended state based Kalman filter design for a class of nonlinear time-varying uncertain systems
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Journal Article
On extended state based Kalman filter design for a class of nonlinear time-varying uncertain systems
2018
Overview
This paper considers the filtering problem for a class of multi-input multi-output systems with nonlinear time-varying uncertain dynamics, random process and measurement noise. An extended state based Kalman filter, with the idea of timely estimating the unknown dynamics, is proposed for better robustness and higher estimation precision. The stability of the proposed filter is rigorously proved for nonlinear timevarying uncertain system with weaker stability condition than the extended Kalman filter, i.e., the initial estimation error, the uncertain dynamics and the noises are only required to be bounded rather than small enough. Moreover, quantitative precision of the proposed filter is theoretically evaluated. The proposed algorithm is proved to be the asymptotic unbiased minimum variance filter for constant uncertainty. The simulation results of some benchmark examples demonstrate the feasibility and effectiveness of the method.
Publisher
Science China Press,Springer Nature B.V
