Araújo, Aldayr Dantas deSilva Júnior, Francisco das Chagas da2014-12-172007-07-302014-12-172005-07-28SILVA JÚNIOR, Francisco das Chagas da. Uma proposta de um controlador adaptativo por posicionamento de pólos e estrutura variável. 2005. 65 f. Dissertação (Mestrado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2005.https://repositorio.ufrn.br/jspui/handle/123456789/15415There are two main approaches for using in adaptive controllers. One is the so-called model reference adaptive control (MRAC), and the other is the so-called adaptive pole placement control (APPC). In MRAC, a reference model is chosen to generate the desired trajectory that the plant output has to follow, and it can require cancellation of the plant zeros. Due to its flexibility in choosing the controller design methodology (state feedback, compensator design, linear quadratic, etc.) and the adaptive law (least squares, gradient, etc.), the APPC is the most general type of adaptive control. Traditionally, it has been developed in an indirect approach and, as an advantage, it may be applied to non-minimum phase plants, because do not involve plant zero-pole cancellations. The integration to variable structure systems allows to aggregate fast transient and robustness to parametric uncertainties and disturbances, as well. In this work, a variable structure adaptive pole placement control (VS-APPC) is proposed. Therefore, new switching laws are proposed, instead of using the traditional integral adaptive laws. Additionally, simulation results for an unstable first order system and simulation and practical results for a three-phase induction motor are shownapplication/pdfAcesso AbertoControle AdaptativoControle por Posicionamento de PólosControle por Estrutura VariávelMotor de Indução TrifásicoAdaptive ControlPole Placement ControlVariable Structure ControlThree-Phase Induction MotormasterThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA