This work presents a Dual-Mode Adaptive Robust Controller applied to the angular shaft speed control of a three-phase induction motor. A liaison between a Model Reference Adaptive Controller (MRAC) and a Variable Structure Model Reference Adaptive Controller (VS-MRAC) through a tuning parameter is obtained using fuzzy logic. The basic idea of the Dual-Mode controller is adding both the advantages of the VS-MRAC transient behavior with the steady-state properties of the conventional MRAC.
Neste artigo é apresentada uma prova de estabilidade para o controlador em Modo Dual Adaptativo Robusto (DMARC) para plantas com grau relativo unitário. O DMARC é um controlador que interpola as estratégias de Controle Adaptativo por Modelo de Referência (MRAC) e o Controle Adaptativo por Modelo de Referência e Estrutura Variável (VS-MRAC) com o intuito de incorporar as vantagens de desempenho transitório de um VS-MRAC, com as propriedades de regime permanente de um MRAC convencional. Desta forma, deseja-se obter um sistema de controle robusto a incertezas paramétricas e perturbações externas, com desempenho rápido e pouco oscilatório durante o transitório e um sinal de controle suave em regime permanente. In this paper the stability proof to the Dual Mode Adaptive Robust Control (DMARC) applied to plants with relative degree one is presented. The DMARC is a control strategy which interpolates the Model Reference Adaptive Control (MRAC) and the Variable Structure Model Reference Adaptive Control (VS-MRAC). The main idea is to develop a robust controller to parametric uncertainties and external disturbances with good transient characteristics (fast response and small oscillations) as in a VS-MRAC and good steady-state characteristic (smooth control signal) as in a conventional MRAC
Neste artigo é apresentado o Controlador em Modo Dual Adaptativo Robusto (DMARC). O DMARC é um sistema de controle que combina as estratégias de Controle Adaptativo por Modelo de Referência (MRAC) com leis integrais de adaptação e o Controle Adaptativo por Modelo de Referência e Estrutura Variável (VS-MRAC) com leis chaveadas de acordo com a teoria de sistemas com estrutura variável. A idéia básica é incorporar as vantagens de desempenho transitório de um VS-MRAC, com as propriedades de regime permanente de um MRAC convencional. Desta forma, obtém-se um sistema de controle robusto a incertezas paramétricas e perturbações externas, com desempenho rápido e pouco oscilatório durante o transitório e um sinal de controle suave em regime permanente. In this paper the Dual-Mode Adaptive Robust Controller (DMARC) is presented. The DMARC is a control strategy which interpolates the Model Reference Adaptive Control (MRAC) and the Variable Structure Model Reference Adaptive Control ( VS-MRAC). The main idea is to develop a robust controller to parametric uncertainties and external disturbances with good transient characteristics (fast response and small oscillations) as in a VS-MRAC and good steady-state characteristics (smooth control signal) as in a conventional MRAC
This paper describes the implementation of a strategy to obtain the currents reference of a shunt filter active using the method of the Theory of Generalized Instantaneous Power applied to the control of a generator Induction of feeding a nonlinear load. The objectives are to establish control of generator excitation and reduce harmonic distortion caused by nonlinear load. It is made a comparison with other method for obtaining the reference currents, the dq synchronous reference. First, they are simulations using the Borland C++. The control and communications necessary for the supervisory stage were implemented via DSP -TMS320F2812.
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