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Papers by Victor Pires

Research paper thumbnail of Visual motion detection with hand-eye manipulator using statistic moments classifiers and fuzzy logic approach-study, application and comparation

IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243), 2001

In this paper, we address the visual servo control of a robot manipulator under a camera-in-hand ... more In this paper, we address the visual servo control of a robot manipulator under a camera-in-hand configuration. The goal is to recognise several types of different objects in a moving conveyer belt using a camera attached to a robot arm. To accomplish the object recognition three different methods are proposed: statistic based on Hu moments, statistic based on affine moments and a fuzzy based classifier. Validity and effectiveness of the proposed methods are evaluated by real-time experiments using a CCD camera attached to an ADEPT robot arm. Comparisons between the three proposed methods based on experimental results are also presented

Research paper thumbnail of Autonomous Landing of an Unmanned Aerial Vehicle

International Conference on Computational Intelligence for Modelling, Control and Automation and International Conference on Intelligent Agents, Web Technologies and Internet Commerce (CIMCA-IAWTIC'06), 2005

In this paper, the design and implementation of a real-time landing algorithm for an autonomous h... more In this paper, the design and implementation of a real-time landing algorithm for an autonomous helicopter is presented. The helicopter uses an onboard acquisition system to obtain the GPS and the sonar data to update its landing parameters. To control the path during the land step a fuzzy logic controller located in the fixed station is used. This controller is

Research paper thumbnail of Controlling a grid-connected T-type three level inverter system using a sliding mode approach

2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014

Research paper thumbnail of A comparative study of a PI, neural network and fuzzy genetic approach controllers for an AC-drive

AMC'98 - Coimbra. 1998 5th International Workshop on Advanced Motion Control. Proceedings (Cat. No.98TH8354), 1998

An increasing number of applications in high performing electrical drive systems use, nowadays, s... more An increasing number of applications in high performing electrical drive systems use, nowadays, squirrel-cage induction motors. In this paper we use fuzzy genetic, neural network and PI approaches to control the speed of a field oriented AC-drive. The control methods and performances are presented and compared

Research paper thumbnail of Twelve pulse parallel rectifier with a new topology for the output low-pass filter

PESC Record. 27th Annual IEEE Power Electronics Specialists Conference, 1996

Twelve pulse parallel rectifiers provided with interphase reactors and passive LC output low-pass... more Twelve pulse parallel rectifiers provided with interphase reactors and passive LC output low-pass filters, designed to minimise the input current distortion factor and the output voltage ripple are optimised. A new filter topology is used, where the interphase inductors perform a double function, acting as decoupling reactors and as filter inductors. Adding only three capacitors, it is possible to integrate

Research paper thumbnail of Adaptive fuzzy control of a single-phase sinusoidal rectifier with step-up/down characteristics

Proceedings of IEEE International Conference on Industrial Technology 2000 (IEEE Cat. No.00TH8482), 2000

Research paper thumbnail of Multiobjective planning of distribution networks incorporating switches and protective devices using a memetic optimization

Reliability Engineering & System Safety, 2015

ABSTRACT

Research paper thumbnail of A SINGLE-PHASE SINGLE-STAGE BUCK RECTIFIER WITH AN OUTPUT VOLTAGE WIDE RANGE

Research paper thumbnail of Amplificadores Digitais de Áudio: Estado da Arte

Research paper thumbnail of Cross-over Distortion Reduction on 3 Level PWM for Audio Amplifiers

Research paper thumbnail of Modelação Não Linear, Simulação e Controlo de Conversores Electrónicos de Potência Utilizando o Programa Matlab/Simulink

Research paper thumbnail of Rectificadores com factor de potência quase unitário

Research paper thumbnail of A New Fully Controlled Single Phase PFC Buck Topology

Research paper thumbnail of LOW SENSITIVITY ADAPTIVE FUZZY CONTROLLER FOR SINGLE PHASE STEP-UP/DOWN VOLTAGE PWM FRONT END RECTIFIER

Research paper thumbnail of SLIDING MODE CURRENT CONTROLLER FOR THE THREE PHASE SINGLE-STAGE AC/DC BUCK-BOOST CONVERTERS

Research paper thumbnail of Modelling, simulation and control of step-up/down current-source rectifiers

Research paper thumbnail of Neuro-fuzzy Modeling with a New Hybrid Learning Algorithm

Research paper thumbnail of An E-learning Approach to Improve Engineering Teaching

Pais, Carlos and Pires, Víctor and Amaral, Rui and Martins, João and Luz, Carlos and Dias, OP (20... more Pais, Carlos and Pires, Víctor and Amaral, Rui and Martins, João and Luz, Carlos and Dias, OP (2005) An E-learning Approach to Improve Engineering Teaching. [Paper]. In: CONFTELE2005, Abril 2005, Tomar - Portugal. ... Full text not available from this repository.

Research paper thumbnail of Fault Diagnosis and Location on Multi-Load Distribution Network by a Current Clarke-Concordia Pattern Approach

Research paper thumbnail of A Remote Laboratory Environment for Manipulative Therapy Learning

Research paper thumbnail of Visual motion detection with hand-eye manipulator using statistic moments classifiers and fuzzy logic approach-study, application and comparation

IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243), 2001

In this paper, we address the visual servo control of a robot manipulator under a camera-in-hand ... more In this paper, we address the visual servo control of a robot manipulator under a camera-in-hand configuration. The goal is to recognise several types of different objects in a moving conveyer belt using a camera attached to a robot arm. To accomplish the object recognition three different methods are proposed: statistic based on Hu moments, statistic based on affine moments and a fuzzy based classifier. Validity and effectiveness of the proposed methods are evaluated by real-time experiments using a CCD camera attached to an ADEPT robot arm. Comparisons between the three proposed methods based on experimental results are also presented

Research paper thumbnail of Autonomous Landing of an Unmanned Aerial Vehicle

International Conference on Computational Intelligence for Modelling, Control and Automation and International Conference on Intelligent Agents, Web Technologies and Internet Commerce (CIMCA-IAWTIC'06), 2005

In this paper, the design and implementation of a real-time landing algorithm for an autonomous h... more In this paper, the design and implementation of a real-time landing algorithm for an autonomous helicopter is presented. The helicopter uses an onboard acquisition system to obtain the GPS and the sonar data to update its landing parameters. To control the path during the land step a fuzzy logic controller located in the fixed station is used. This controller is

Research paper thumbnail of Controlling a grid-connected T-type three level inverter system using a sliding mode approach

2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014

Research paper thumbnail of A comparative study of a PI, neural network and fuzzy genetic approach controllers for an AC-drive

AMC'98 - Coimbra. 1998 5th International Workshop on Advanced Motion Control. Proceedings (Cat. No.98TH8354), 1998

An increasing number of applications in high performing electrical drive systems use, nowadays, s... more An increasing number of applications in high performing electrical drive systems use, nowadays, squirrel-cage induction motors. In this paper we use fuzzy genetic, neural network and PI approaches to control the speed of a field oriented AC-drive. The control methods and performances are presented and compared

Research paper thumbnail of Twelve pulse parallel rectifier with a new topology for the output low-pass filter

PESC Record. 27th Annual IEEE Power Electronics Specialists Conference, 1996

Twelve pulse parallel rectifiers provided with interphase reactors and passive LC output low-pass... more Twelve pulse parallel rectifiers provided with interphase reactors and passive LC output low-pass filters, designed to minimise the input current distortion factor and the output voltage ripple are optimised. A new filter topology is used, where the interphase inductors perform a double function, acting as decoupling reactors and as filter inductors. Adding only three capacitors, it is possible to integrate

Research paper thumbnail of Adaptive fuzzy control of a single-phase sinusoidal rectifier with step-up/down characteristics

Proceedings of IEEE International Conference on Industrial Technology 2000 (IEEE Cat. No.00TH8482), 2000

Research paper thumbnail of Multiobjective planning of distribution networks incorporating switches and protective devices using a memetic optimization

Reliability Engineering & System Safety, 2015

ABSTRACT

Research paper thumbnail of A SINGLE-PHASE SINGLE-STAGE BUCK RECTIFIER WITH AN OUTPUT VOLTAGE WIDE RANGE

Research paper thumbnail of Amplificadores Digitais de Áudio: Estado da Arte

Research paper thumbnail of Cross-over Distortion Reduction on 3 Level PWM for Audio Amplifiers

Research paper thumbnail of Modelação Não Linear, Simulação e Controlo de Conversores Electrónicos de Potência Utilizando o Programa Matlab/Simulink

Research paper thumbnail of Rectificadores com factor de potência quase unitário

Research paper thumbnail of A New Fully Controlled Single Phase PFC Buck Topology

Research paper thumbnail of LOW SENSITIVITY ADAPTIVE FUZZY CONTROLLER FOR SINGLE PHASE STEP-UP/DOWN VOLTAGE PWM FRONT END RECTIFIER

Research paper thumbnail of SLIDING MODE CURRENT CONTROLLER FOR THE THREE PHASE SINGLE-STAGE AC/DC BUCK-BOOST CONVERTERS

Research paper thumbnail of Modelling, simulation and control of step-up/down current-source rectifiers

Research paper thumbnail of Neuro-fuzzy Modeling with a New Hybrid Learning Algorithm

Research paper thumbnail of An E-learning Approach to Improve Engineering Teaching

Pais, Carlos and Pires, Víctor and Amaral, Rui and Martins, João and Luz, Carlos and Dias, OP (20... more Pais, Carlos and Pires, Víctor and Amaral, Rui and Martins, João and Luz, Carlos and Dias, OP (2005) An E-learning Approach to Improve Engineering Teaching. [Paper]. In: CONFTELE2005, Abril 2005, Tomar - Portugal. ... Full text not available from this repository.

Research paper thumbnail of Fault Diagnosis and Location on Multi-Load Distribution Network by a Current Clarke-Concordia Pattern Approach

Research paper thumbnail of A Remote Laboratory Environment for Manipulative Therapy Learning

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