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《International Journal of Automation and Computing》 2017年02期
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A Sliding Mode Observer for Uncertain Nonlinear Systems Based on Multiple Models Approach

Kas Hfaedh  Karim Dahech  Tarak Damak  
【摘要】:This paper presents a method of state estimation for uncertain nonlinear systems described by multiple models approach.The uncertainties, supposed as norm bounded type, are caused by some parameters variations of the nonlinear system. Linear matrix inequalities(LMIs) have been established in order to ensure the stability conditions of the multiple observer which lead to determine the estimation gains. A sliding mode gain has been added in order to compensate the uncertainties. Numerical simulations through a state space model of a real process have been realized to show the robustness of the synthesized observer.
【作者单位】Laboratory
【关键词】Uncertain nonlinear system norm bounded uncertainty multiple models approach multiple observer sliding mode observer
【分类号】:O231
【正文快照】:
1 IntroductionThe knowledge of state variables of nonlinear systemsis necessary in control systems field.Although,in mostreal systems,this knowledge is partial because some vari-ables of the state can not be measured and some sensorsare expensive.As a so

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