Controlador nebuloso de arquitetura simplificada estudo de caso : acionamento de motor de indução trifasico

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

This work presents a new approach of a simple and efficient digital controller, which uses the fuzzy logic concepts to drive a three-phase induction motor in a practical engineering application. In order to represent the membership functions and carry out the weighting up of linguistic terms a custom structure was used in the fuzzy logic controller. The performance evaluation of the digital controller was verified using a new strategy of induction motor drive for speed control and input current restriction. This fuzzy logic controller with simplified architecture applied in a real time speed control assures the current restriction and the normal operation of the induction motor. The control strategy operates in closed loop and has a dynamic gain adjustment that provides the soft start requirements. The closed loop frequency control allows to adjust the desired value of the rotation frequency, while the closed loop current control assures that current doesn t cross the limit stipulated for motor drive. The versatility of this digital controller based on low cost 8 bits microcontrollers can be verified from the results presented. The accuracy and time response could be compared to the other conventional systems using scalar or vector techniques.

ASSUNTO(S)

motores eletricos de indução logica difusa redes neurais (computação) induction motors digital control controle digital neural networks fuzzy logic controle em tempo real

ACESSO AO ARTIGO

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