Observer-based unknown input and measurement noise estimations for a class of nonlinear systems
作者： Chen Yantao , Hai Linpeng , Yang Junqi
DOI: 10.1109/CHICC.2015.7259920
关键词: Control theory 、 State observer 、 State vector 、 Noise 、 Term (time) 、 Observer (quantum physics) 、 Matrix (mathematics) 、 Nonlinear system 、 State (functional analysis) 、 Mathematics
摘要: This paper provides an estimated scheme of state and disturbance for a class nonlinear systems with unknown inputs measurement noise. First, augmented singular system whose states consist the vector noise original is constructed. By choosing special reduced-order gain matrix, observer which able to eliminate influence term constructed developed, purpose estimating both reached. Second, high-gain sliding mode considered estimate exact derivative output vector, kind input reconstruction method proposed. Finally, modified lateral axis model L-1011 in cruise flight conditions used illustrate effectiveness proposed approach.
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