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| A continuous finite-time sliding mode control method basedon finite-time disturbance observer is designed for DC-AC inverters with matched/mismatched disturbances.First of all, a finite-time disturbance observer is introduced for the estimations of disturbances and their derivatives.And then, the estimation information of disturbances and their derivatives are utilized to construct a new dynamic sliding surface.To eliminate the chattering phenomenon of sliding mode control, the switching terms of proposed method is designed to appear only in the derivative of control.Finally, the robustness of proposed controller to parameter perturbations is demonstrated by simulation results. |
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| Keywords:Control theory and control engineering, DC-AC inverters, sliding mode control, mismatched disturbances rejection. |
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