H∞ Fuzzy Control of DC-DC Converters with Input Constraint

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【标题】H∞ Fuzzy Control of DC-DC Converters with Input Constraint

【作者】 D. Saifia  Mohammed Chadli  Salim Labiod  Hamid Reza Karimi  Peng Shi 

【摘要】This paper proposes amethod for designingH∞ fuzzy control of DC-DC converters under actuator saturation. Because linear control design methods do not take into account the nonlinearity of the system; a T-S fuzzy model and a controller design approach is used. The designed control not only handles the external disturbance but also the saturation of duty cycle. The input constraint is first transformed into a symmetric saturation which is represented by a polytopic model. Stabilization conditions for the H∞ state feedback system of DC-DC converters under actuator saturation are established using the Lyapunov approach. The proposed method has been compared and verified with a simulation example.

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