کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6855835 | 1437691 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On local Hâ switched controller design for uncertain T-S fuzzy systems subject to actuator saturation with unknown membership functions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
هوش مصنوعی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This manuscript proposes a local Hâ switched controller design for a class of uncertain nonlinear plants described by Takagi-Sugeno (T-S) fuzzy models with unknown membership functions. The control design requires only the lower and upper bounds of the system nonlinearities and of the system linear parameters, which can depend on uncertain parameters. The switched control law chooses a state-feedback controller gain, which belongs to a given set of gains, that minimizes the time derivative of a quadratic Lyapunov function. This procedure eliminates the necessity of finding the membership function expressions to implement the control law, guarantees an Hâ performance and ensures that the state trajectory remains within a region in which the T-S fuzzy model is valid. Due to the Hâ control design, that frequently results in very large control inputs, it is considered that the switched control law is subject to actuator saturation. Finally, two examples are presented. The first example studies the control of a chaotic Lorenz system. It shows that, for disturbances with large magnitude, the proposed procedures provided better results than the obtained with another recent method found in the literature, that considers full access to the membership functions. In the second example, a practical implementation of an active nonlinear suspension control system, considering an uncertain bounded mass and a fault in the actuator, confirms the effectiveness of the proposed approach.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuzzy Sets and Systems - Volume 344, 1 August 2018, Pages 1-26
Journal: Fuzzy Sets and Systems - Volume 344, 1 August 2018, Pages 1-26
نویسندگان
Diogo Ramalho de Oliveira, Marcelo Carvalho Minhoto Teixeira, Uiliam Nelson Lendzion Tomaz Alves, Wallysonn Alves de Souza, Edvaldo Assunção, Rodrigo Cardim,