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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Desenvolvimento de um ambiente para projeto de controladores fuzzy para dispositivos m?veis

Ara?jo J?nior, M?rcio Emanuel Ugulino de 02 September 2011 (has links)
Made available in DSpace on 2014-12-17T14:55:51Z (GMT). No. of bitstreams: 1 MarcioEUA_DISSERT.pdf: 7811126 bytes, checksum: a8663444eeaf1a908fcd7146c171a40a (MD5) Previous issue date: 2011-09-02 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Fuzzy intelligent systems are present in a variety of equipment ranging from household appliances to Fuzzy intelligent systems are present in a variety of equipment ranging from household appliances to small devices such as digital cameras and cell phones being used primarily for dealing with the uncertainties in the modeling of real systems. However, commercial implementations of Fuzzy systems are not general purpose and do not have portability to different hardware platforms. Thinking about these issues this work presents the implementation of an open source development environment that consists of a desktop system capable of generate Graphically a general purpose Fuzzy controller and export these parameters for an embedded system with a Fuzzy controller written in Java Platform Micro Edition To (J2ME), whose modular design makes it portable to any mobile device that supports J2ME. Thus, the proposed development platform is capable of generating all the parameters of a Fuzzy controller and export it in XML file, and the code responsible for the control logic that is embedded in the mobile device is able to read this file and start the controller. All the parameters of a Fuzzy controller are configurable using the desktop system, since the membership functions and rule base, even the universe of discourse of the linguistic terms of output variables. This system generates Fuzzy controllers for the interpolation model of Takagi-Sugeno. As the validation process and testing of the proposed solution the Fuzzy controller was embedded on the mobile device Sun SPOT ? and used to control a plant-level Quanser?, and to compare the Fuzzy controller generated by the system with other types of controllers was implemented and embedded in sun spot a PID controller to control the same level plant of Quanser? / Sistemas inteligentes Fuzzy est?o presentes nos mais variados equipamentos, desde eletrodom?sticos e m?quinas industriais at? dispositivos de pequeno porte, como m?quinas digitais e aparelhos celulares, sendo utilizados principalmente por lidar com as incertezas inerentes a modelagem dos sistemas reais. No entanto, as implementa??es comerciais de sistemas Fuzzy n?o s?o de prop?sito geral e n?o apresentam portabilidade para diferentes plataformas de hardware. Sobre essas quest?es, este trabalho apresenta a implementa??o de um ambiente de desenvolvimento open source composto de um sistema desktop capaz de gerar graficamente um controlador Fuzzy de prop?sito geral e exportar estes par?metros para um sistema embarcado com um controlador Fuzzy escrito em Java To Plataform Micro Edition (J2ME), cuja concep??o modular o torna port?vel para qualquer dispositivo m?vel que suporte J2ME. Desta forma, a plataforma de desenvolvimento proposta ? capaz de gerar todos os par?metros de um controlador Fuzzy e export?-lo em arquivo XML. O c?digo respons?vel pela l?gica de controle que se encontra embarcado no dispositivo m?vel ? capaz de ler o arquivo e iniciar o controlador. Todos os par?metros de um controlador Fuzzy s?o configur?veis atrav?s do sistema desktop, desde as fun??es de pertin?ncia e base de regras at? o universo de discurso dos termos lingu?sticos das vari?veis de sa?da. O sistema proposto gera controladores Fuzzy para o modelo de interpola??o do tipo Takagi-Sugeno. Como processo de valida??o e testes da solu??o proposta, o controlador Fuzzy foi embarcado no dispositivo m?vel Sun SPOT? e usado para controle de uma planta de n?vel da Quanser?, e para compara??o do controlador Fuzzy gerado pelo sistema com outros tipos de controladores foi implementado e embarcado no Sun SPOT um controlador PID para a mesma planta de n?vel.

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