نتایج جستجو برای: evolutionary fuzzy system

تعداد نتایج: 2388789  

1999
Frank Ho

This paper presents an evolutionary learning algorithm to facilitate the design of fuzzy controllers for mobile robots. It discusses the concepts, feasibility, bene ts and limitations of current evolutionary techniques for fuzzy rule discovery and tuning. We propose an evolution strategy that optimizes the gain factors in the conclusion part of TakagiSugeno-Kang type fuzzy rules. We describe tw...

2008
Mohamed El-Koujok Rafael Gouriveau Noureddine Zerhouni

In maintenance field, prognostic is recognized as a key feature as the estimation of the remaining useful life of an equipment allows avoiding inopportune maintenance spending. However, it can be difficult to define and implement an adequate and efficient prognostic tool that includes the inherent uncertainty of the prognostic process. Within this frame, neuro-fuzzy systems are well suited for ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده فنی 1392

موتور dc امروزه هم در جهان بدلیل قابلیت کنترل آسان سرعت هنوز مورد استفاده قرار می گیرد. در این پایان نامه طراحی و شبیه سازی یک کنترل کننده ی سیستم عصبی فازی سازگار(adaptive neuro fuzzy inference system) تحقیق می شود که این کنترل کننده در روش کنترل سرعت مدولاسیون پهنای باند(pulse width modulation)، بر روی یک موتور dc تحریک مستقل به کار گرفته شده است. هدف اصلی از انجام این کار، کاهش جریان راه ان...

Journal: :Int. J. Intell. Syst. 1998
Luis Magdalena

In recent years the use of Genetic or Evolutionary techniques has produced interesting results on the automatic generation of Knowledge Bases for Fuzzy Logic Controllers. Three diierent representations of the rule base have been considered: list of rules, relational matrix and decision table. The use of lists of rules reduces the dimension of the rule base but presents some handicaps for crosso...

2009
Chun-Feng Lu

A fuzzy-controller design by the hybrid of genetic algorithm and particle-swarm optimisation (F-HGAPSO) is employed for a thyristor-controlled series capacitor (TCSC) to improve the transient stability of flexible AC transmission systems (FACTS). According to the variation of rotation speed, a fuzzy controller decides an approximate series capacitance to achieve a better dynamic response of FAC...

2009
Václav Snásel Ajith Abraham Suhail S. J. Owais Jan Platos Pavel Krömer

2001
Khaled M. Mahar

In this paper, numerical exemplars are used in a training method to find the structure of a fuzzy-neural network. After this structure learning, a genetic algorithm is applied to determine the initial weights of the neural network, thereby guiding the neural network to a nearoptimal initialization. These well-initialized networks are then trained with backpropagation algorithm. Using this propo...

Journal: :Soft Comput. 2011
Rafael Alcalá Yusuke Nojima Francisco Herrera Hisao Ishibuchi

Multiobjective genetic fuzzy rule selection is based on the generation of a set of candidate fuzzy classification rules using a preestablished granularity or multiple fuzzy partitions with different granularities for each attribute. Then, a multiobjective evolutionary algorithm is applied to perform fuzzy rule selection. Since using multiple granularities for the same attribute has been sometim...

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