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In this paper, we construct a nonlinear extended state observer (ESO) through nonlinear functions switching between sub-linear and linear regions. The convergence is proved with explicit error estimation. The numerical simulations are carried out for comparing the performance of different ESOs. The simulation visualization shows that the proposed ESO in this paper takes advantages of low peaking value...
In this paper, the global and semi-global convergence of nonlinear active disturbance rejection control (ADRC) for a class of multi-input multi-output (MIMO) nonlinear systems with large uncertainties that come from both dynamical modeling and external disturbance are proved. A class of linear systems with external disturbance that can be dealt with by ADRC is classified, from which a comparison with...
This paper presents non-stationary interval type-2 fuzzy logic system(NSIT2FLS). Firstly, non-stationary type-2 fuzzy set(NST2FS) is investigated as extended version of non-stationary fuzzy set and type-2 fuzzy set. Secondly, special case is concentrated on its interval counterpart, whose three basic operators, such as intersection, union and complement, are investigated in more detail. Thirdly, non-stationary...
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