Fuzzy Observer-Based Dynamic Surface Control for Input-Saturated Nonlinear Systems and its Application to Missile Guidance

In this paper, a fuzzy observer-based tracking control scheme is proposed for a class of strict-feedback uncertain nonlinear system with input saturation. To facilitate the fuzzy logic system (FLS) design, the original uncertain nonlinear system is transformed into an output feedback system firstly....

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Bibliographic Details
Published inIEEE access Vol. 8; pp. 121285 - 121298
Main Authors Zhang, Wenguang, Yi, Wenjun
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptive control
Adaptive dynamic programming
adaptive fuzzy control
Adaptive systems
Control methods
Control stability
Dynamic programming
Dynamic stability
dynamic surface control
Feedforward systems
Fuzzy control
Fuzzy logic
Guidance systems
input saturation
Missile control
missile guidance systems
Missiles
Nonlinear control
Nonlinear systems
Observers
Optimal control
Output feedback
Saturation
Stability analysis
State observers
Tracking control
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Summary:In this paper, a fuzzy observer-based tracking control scheme is proposed for a class of strict-feedback uncertain nonlinear system with input saturation. To facilitate the fuzzy logic system (FLS) design, the original uncertain nonlinear system is transformed into an output feedback system firstly. Then, an adaptive state observer is constructed. In order to efficiently tackle the input saturation, an auxiliary system (AS) is introduced. Using the estimated states and AS, the dynamic surface control (DSC) strategy is developed based on backstepping method. Under the DSC scheme, the tracking control problem is reduced to optimal regulation problem of an affine system. Subsequently, an adaptive dynamic programming (ADP) based optimal control scheme is proposed. The stability of the overall system is guaranteed by Lyapunov theory. Finally, guidance simulation is made to confirm the effectiveness of the developed control method.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3006489