Model Reference Adaptive Control
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Investigation on Solar PV generation and design of switched reluctance motor for Smart Agriculture actuation system
ABSTRACT This paper presents standalone solar photovoltaic (PV) powered fed actuation system employing a switched reluctance motor (SRM) particularly used in remote and rural areas. The converter efficiency is achieved by changing ON and OFF state of solar PV drive. An electronic commutation drives SRM drive with achieved by position hall sensor and encoder.
Braz. arch. biol. technol.. Publicado em: 08/10/2018
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2. Adaptive Fuzzy Sliding-Mode Control of Wheel Slide Protection Device for ER24PC Locomotive
Abstract Wheel Slide Protection Devices (WSPD) are employed in railway vehicles to maximize the average of the possible frictional braking force, which is a nonlinear function of the slip ratio of the wheel sets. In this paper, to control the WSPD, a low-order model is presented and un-modeled dynamics are considered as uncertainties. Due to the nonlinear dy
Lat. Am. j. solids struct.. Publicado em: 2017
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3. MODEL REFERENCE ADPATIVE CONTROL APPLIED TO THE SPEED AND POSITION CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS / CONTROLE ADAPTATIVO ROBUSTO POR MODELO DE REFERÊNCIA APLICADO AO CONTROLE DE VELOCIDADE E DE POSIÇÃO DE MOTORES SÍNCRONOS A ÍMÃS PERMANENTES
Este trabalho propõe duas estratégias de controle vetorial para motores síncronos a ímãs permanentes (MSIPs). Destinam-se ao controle de velocidade e de posição, respectivamente, e são baseados em uma lei de controle chamada VS-RMRAC. Não tendo sido aplicado ainda ao controle de máquinas elétricas, a lei de controle VS-RMRAC apresenta característ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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4. ROBUST VARIABLE STRUCTURE MODEL REFERENCE ADAPTIVE CONTROL APPLIED TO ACTIVE POWER FILTERS / CONTROLE ADAPTATIVO ROBUSTO DE ESTRUTURA VARIÁVEL POR MODELO DE REFERÊNCIA APLICADO A FILTROS ATIVOS DE POTÊNCIA
This works presents a Robust Variable Structure Model Reference Adaptive Control scheme denoted VSRMRAC. In this adaptive control strategy, each parameter of the control law is obtained by the sum of two other adaptive terms. One of them is associated with the RMRAC algorithm, while the other is composed of an adaptive gain rated by an approximated sign func
Publicado em: 2010
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5. CONTRIBUTION TO THE CONTROL OF ELECTRODYNAMIC VIBRATION MACHINES / CONTRIBUIÇÃO AO CONTROLE DE MÁQUINAS DE VIBRAÇÃO ELETRODINÂMICAS
This work presents contributions to the sinusoidal acceleration control of electrodynamic shakers applied in vibration testing. Considering the importance of sine tests to identify critical frequencies of operation and to determine mechanical weakness in the specified performance of specimens, vibration controllers are designed to reproduce the amplitude and
Publicado em: 2009
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6. AUTOMATIC PROJECT OF ENCODERLESS SPEED REGULATORS APPLIED TO THREE-PHASE INDUCTION MOTORS / PROJETO AUTOMÁTICO DE CONTROLADOR DE VELOCIDADE SEM SENSOR MECÂNICO PARA MOTORES DE INDUÇÃO TRIFÁSICOS
This works proposes parameters estimation algorithm to auto-tune the control laws of a speed sensorless servo. The identification process of the electrical and mechanical parameters is based on recursive least squares method (RLS) and utilizes just measured stator currents. The electrical parameters are obtained by the transfer function of the motor with loc
Publicado em: 2008
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7. SERVOCONTROLE DE VELOCIDADE APLICADO A MOTORES DE INDUÇÃO MONOFÁSICOS SEM SENSORES MECÂNICOS / SERVO CONTROL OF SPEED APPLIED TO SINGLE-PHASE INDUCTION MOTORS WITHOUT SPEED SENSOR
This work proposes a sensorless speed control applied to single-phase induction motors (SPIM). The objective is to present an alternative for variable speed single-phase motor drives for residencial applications, which operate mostly with constant speed. For contextualization in the actual scenario, firstly a bibliographic review about variable speed operati
Publicado em: 2008
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8. Controlador em modo dual adaptativo robusto - DMARC
Neste trabalho é apresentada uma proposta de um controlador, denominado Controlador em Modo Dual Adaptativo Robusto (DMARC), que estabelece uma ligação entre um controlador adaptativo por modelo de referência (MRAC) e um controlador adaptativo por modelo de referência e estrutura variável (VS-MRAC). A idéia básica é incorporar as vantagens de desemp
Publicado em: 2008
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9. Estabilidade e robustez de um controlador adaptativo indireto por um modelo de referência e estrutura variável / Robustness and stability analysis of an indirect variable structure model reference adaptive controller
In this thesis, it is developed the robustness and stability analysis of a variable structure model reference adaptive controller considering the presence of disturbances and unmodeled dynamics. The controller is applied to uncertain, monovariable, linear time-invariant plants with relative degree one, and its development is based on the indirect adaptive co
Publicado em: 2007
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10. Adaptive techniques applied to offshore dynamic positioning systems
Dynamic positioning systems (DPS) comprise the deployment of active propulsion to maintain the position and heading of a vessel. Several sensors are used to measure the actual position of the floating body, while a control algorithm is responsible for the calculation of forces to be delivered by each propeller, in order to counteract all environmental forces
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-09
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11. DESIGN AND DEVELOPMENT OF A THREE-PHASE FOUR-WIRE AC POWER SOURCE / PROJETO E DESENVOLVIMENTO DE UMA FONTE DE POTÊNCIA CA TRIFÁSICA A QUATRO FIOS
Este trabalho apresenta uma contribuição ao estudo de Fontes de Potência CA onde é apresentado o desenvolvimento de um protótipo. Os diversos estágios que compõem o sistema, desde a topologia do conversor, do filtro, da instrumentação e do controlador são apresentados e analisados. O protótipo desenvolvido é uma fonte trifásica a quatro fios, qu
Publicado em: 2006
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12. CONTROLE DE ACELERAÇÃO DE UMA MÁQUINA DE VIBRAÇÃO ELETRODINÂMICA / ACCELERATION CONTROL OF AN ELECTRODYNAMIC VIBRATION MACHINE
This work presents the development of a novel digital acceleration controller for sinusoidal vibration tests using switching-mode AC power source (ACPS) fed electrodynamic vibration machines. The proposed scheme is based on the interaction of two control loops: one for the shaker s acceleration regulation and another for the ACPS output voltage control. A ro
Publicado em: 2005