مروری بر اتوماتای فازی

در اﯾﻦ ﻣﻘﺎﻟﻪ، در اﺑﺘﺪا ﺳﺎﺧﺘﺎر ﺟﺒﺮی ﻣﺎﺷﯿﻦ ﻫﺎ و ﺳﭙﺲ ﻣﻔﺎﻫﯿﻢ اﺗﻮﻣﺎﺗﺎی ﻗﻄﻌﯽ، ﻏﯿﺮﻗﻄﻌﯽ و اﺗﻮﻣﺎﺗﺎ روی ﻣﺸﺒﮑﻪ ی ﻣﺎﻧﺪه ای اراﯾﻪ ﺷﺪ. ﻫﻤﭽﻨﯿﻦ، ﻣﻔﺎﻫﯿﻢ اﺗﻮﻣﺎﺗﺎی ﻓﺎزی ﻣﺘﻨﺎﻫﯽ و ﮔﺮاﻣﺮﻫﺎی ﻓﺎزی را اراﯾﻪ داده و ارﺗﺒﺎط ﺑﯿﻦ آﻧﻬﺎ ﺑﯿﺎن ﺷﺪ. ﻋﻼوه ﺑﺮاﯾﻦ، اﺗﻮﻣﺎﺗﺎی ﻗﻄﻌﯽ و ﻏﯿﺮﻗﻄﻌﯽ در ﺣﺎﻟﺖ ﮐﻠﯽ ﺑﺎ ﻫﻢ ﻣﻘﺎﯾﺴﻪ و دﻟﯿﻞ اراﯾﻪ اﺗﻮﻣﺎﺗﺎی ﻏﯿﺮﻗﻄﻌﯽ ﺑﯿﺎن ﮔﺮدﯾﺪ.

an overview of fuzzy automata

in this paper, a nonlinear island microgrid model including saturation, limiting power change rate and time delay is considered and to control its load frequency, the proportional integral fractional controller (pi λ) is proposed due to its flexible and robust performance. . the fuzzy improved differential evolution (fde) algorithm has been used to optimally determine the parameters of this controller with the aim of minimizing the mean squares of the frequency changes, control effort, and weight combination of both. due to the difficulty of accurately determining the membership functions of the fuzzy system, two-interval type fuzzy (it2f) has been applied. the maximum numerical index of the size of the frequency changes and two numerical indices contrary to the mean squares of the frequency changes and the mean squares of the control effort have been used to evaluate the performance of the controlled system. the sensitivity of the proposed control scheme has been evaluated by significantly increasing and decreasing the parameters of the microgrid system. the simulation results confirm the optimal and robust performance of the controller