Search results for "Control Engineering"

showing 10 items of 435 documents

An economic study about the installation of PV plants reconfiguration systems in Italy

2014

This paper shows the economic convenience of the application of a reconfiguration system for photovoltaic plants, considering the incentives system in Italy and its recent modifications. The reconfiguration is an alternative to the Distributed Maximum Power Point Tracking, DMPPT, technique used to overcome the mismatch problem in Photovoltaic, PV, plants. The reconfiguration techniques employ a microprocessor-based system that modifies the layout of the PV plant by physically changing the connections among modules. After the explanation of the working principle of the PV reconfiguration system allowing the improvement of the efficiency of the same plant and the relevant installation, the ma…

Engineeringbusiness.industryPhotovoltaic systemControl reconfigurationControl engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciMaximum power point trackingRenewable energyReliability engineeringSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaIncentiveGrid-connected photovoltaic power systemElectricityRooftop photovoltaic power stationbusinessReconfiguration photovoltaic incentives policies
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Identification and robust control of DC/DC converter Hammerstein model

2008

Abstract—This paper deals with model-based robust control of dc/dc power electronic converters. The converter is described by means of a Hammerstein model consisting of the nonlinear static characteristics of the converter and a linear time-invariant (LTI) uncertainmodel whose parameters depend on the actual duty-cycle operating range. This suggests that the controller be designed using robust control techniques. In view of applying robust control, identification of the earlier LTI models is performed by means of simulation experiments, carried out on a converter switching model implemented onMATLAB/SIMULINK environment. Internal model control (IMC) structure is employed for the controller …

Engineeringbusiness.industryPower converters Hammerstein model Model identification Robust controlSystem identificationInternal modelPhase marginPID controllerControl engineeringSettore ING-INF/04 - AutomaticaControl theoryPower electronicsHammerstein model model identification power converters robust control.Electrical and Electronic EngineeringRobust controlbusinessMATLABcomputercomputer.programming_language
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A new ifierarchical and intelligent control architecture based on distributed neural networks and expert systems applied to vehicle automation

2005

Engineeringbusiness.industryPressure controlIntelligent decision support systemControl engineeringIndustrial control systemcomputer.software_genreAutomationExpert systemReal-time Control SystemControl systemEmbedded systembusinessIntelligent controlcomputerThe 2002 International Conference on Control and Automation, 2002. ICCA. Final Program and Book of Abstracts.
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Controlling muscular force by functional electrical stimulation using intelligent PID

2015

Functional Electrical Stimulation (FES) appears as a way of extremely promising research today to solve numerous pathology connected to the deficiencies of the nervous system. It is usually used for the rehabilitation of people with neurological disorders. Generally, skeletal muscles are activated by using Constant Frequency Trains (CFTs) with a fixed amplitude and inter-pulse duration. In addition, the systems of electrical stimulation do not adapt the parameters stimulation to obtain a desired force response during the rehabilitation session. The purpose of this study is to adapt automatically the stimulation parameters to the force desired by the clinician with an intelligent PID control…

Engineeringbusiness.industryPulse (signal processing)Control theoryFunctional electrical stimulationPID controllerMuscular forceConstant frequencyStimulationControl engineeringbusiness2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)
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A suitable control technique for fault-tolerant converters in Distributed Generation

2011

The penetration of Distributed Generation (DG) in power systems is deeply changing the existing distribution networks which is becoming a very sophisticated and complex systems incorporating both active (generators) and passive systems (distribution systems, converters and loads). The necessary simplification can be obtained dealing with small networks, namely Micro-Grids, reproducing, in a smaller scale, the structure and the problems of large networks including production, transmission and distribution of the electrical energy. In order to achieve an adequate level of reliability, fault-tolerant operations of micro-grids become very important. This result can be achieved only using power …

Engineeringbusiness.industryReliability (computer networking)Topology (electrical circuits)Control engineeringFault toleranceSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersPower (physics)Capacitors Circuit faults Fault tolerance Fault tolerant systems Leg Mathematical model TopologyElectric power systemTransmission (telecommunications)fault-tolerant convertersDistributed generationElectronic engineeringPWM modulationbusinessfault-tolerant converters; PWM modulation
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Adaptive interaction robot control with estimation of contact force

2008

Abstract This paper deals with a new adaptive force-position control of a robotic manipulator based on force estimation. First, an adaptive position controller is derived with contact force component as estimated parameters. Second, a supervisory external loop is added in order to regulate the contact force to the desired value. Extensive simulations with 2-DOF manipulator illustrate the followed approach.

Engineeringbusiness.industryRobot manipulatorControl engineeringGeneral Medicineadaptive controlRobot controlContact forceinteraction controlComputer Science::RoboticsLoop (topology)Settore ING-INF/04 - AutomaticaControl theoryPosition (vector)Component (UML)Adaptive interactionbusinessRobot control
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Zigler-Nicols PID Tuning Method for Position Control of a Mobile Robot

2016

This paper presents the implementation and the tuning of PID controller for a mobile platform with differential steering. It presents a mobile platform built in the Department of Industrial Machinery & Equipment, of the Engineering Faculty of Sibiu for an European contest. In a first phase, a brief introduction to PID controller is made, followed by a description of the various robot's components and traction principles underlying locomotion of mobile platforms. At the end the paper contains several principles of tuning the PID controller for the mobile robot.

Engineeringbusiness.industryRobotPID controllerMobile robotControl engineeringDifferential (mechanical device)General MedicinebusinessSimulationPosition controlApplied Mechanics and Materials
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Earthing system’s design in presence of non-uniform soil

2007

The authors propose a practical approach for facing the problem of the design of the earthing systems in two-layer soils. The approach is based on the calculation of an equivalent resistivity of the non-uniform soil through which the designer can treat this one as it was uniform. The purpose of the Authors is to provide an innovative simple method and some easy-to-use graphs for an easy earthing systems' design in two-layer soils.

Engineeringbusiness.industrySimple (abstract algebra)GroundControl engineeringbusinessEarthing systemGeneralLiterature_MISCELLANEOUSReliability engineering2007 9th International Conference on Electrical Power Quality and Utilisation
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Robustness Analysis of an Extended Kalman Filter for Sensorless Control of Induction Motors

2010

This paper deals with robustness analysis of Extended Kalman Filters (EKFs) for sensorless motion control of induction motors. Analysis is carried out by means of simulation experiments considering a conventional EKF, in which system and measurement noise covariance matrices are constant, and an adaptive EKF in which the system noise covariance matrix is updated on-line using a PID-type algorithm driven by the stator current estimation errors.

Engineeringbusiness.industryStatorCovariance matrixControl engineeringKalman filterCovarianceInvariant extended Kalman filterlaw.inventionComputer Science::RoboticsExtended Kalman filterSensorless ControlSettore ING-INF/04 - AutomaticaComputer Science::Systems and ControlControl theorylawRobustness (computer science)Kalman filterInduction motorbusinessInduction motor
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Hammerstein Model-Based Robust Control of DC/DC Converters

2007

This paper deals with model-based robust control of DC/DC power electronic converters. The converter is modelled by means of its static characteristic and a few continuous-time linear and time-invariant (LTI) models corresponding to contiguous ranges of duty-cycle. The model appears as a Hammerstein model in which the values of the parameters of the LTI part depend on the actual duty-cycle operating range. This suggests to describe the converter as an uncertain system to be controlled using robust control techniques. Frequency domain approach is used for describing the nominal model and the uncertainty. In view of applying robust control, identification of the LTI models is performed by mea…

Engineeringbusiness.industrySystem identificationInternal modelPhase marginPID controllerControl engineeringConvertersPower convertersHammerstein model Model identification Robust control.Power (physics)Settore ING-INF/04 - AutomaticaControl theoryFrequency domainRobust controlbusiness2007 7th International Conference on Power Electronics and Drive Systems
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