Search results for "Control Engineering"

showing 10 items of 435 documents

Experimental Implementation of an Enhanced Field Oriented Control Strategy for Induction Motors Using a Low-Cost ATSAM3X8E Microcontroller

2020

This paper presents a low-cost Micro Controller Unit (MCU) implementation of an enhanced Field Oriented Control (FOC) technique that takes into account the non-linearity of the ferromagnetic material. The algorithm is applied to a three-phase 5.5 kW Induction Motor (IM) and experimentally carried out by means of an ATMEL ATSAM3X8E microcontroller. The effectiveness of the enhanced control strategy is verified by comparing the dynamic performances of the electric drive with those obtained by means of a traditional FOC technique. For this purpose, an experimental test bench is set up for the implementation of the enhanced FOC technique. Finally, the technical and economic features of the simp…

Test benchVector controlComputer science020209 energy020208 electrical & electronic engineeringControl engineering02 engineering and technologyField Oriented Control (FOC)Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciElectrical drivesSet (abstract data type)Microcontrollermicrocontrollerinduction motors0202 electrical engineering electronic engineering information engineeringElectric driveInduction motor2020 Fifteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)
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H<inf>∞</inf> control for stochastic switched delay systems with missing measurements: An average dwell time approach

2012

In this paper, the problem of non-fragile observer-based H ∞ control for discrete-time switched delay systems is investigated. Both data missing and time delays are taken into account in the links from sensors to observers and from controllers to actuators. Such problem is transformed into an H ∞ control problem for stochastic switched delay systems. Average dwell time (ADT) approach is used to obtain sufficient conditions on the solvability of such problems. An example is provided to show the effectiveness of the proposed method.

Time delaysDwell timeObserver (quantum physics)Control theoryControl (management)H controlControl engineeringActuatorMathematics2012 American Control Conference (ACC)
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Metrological characterization and operating principle identification of static meters for reactive energy: an experimental approach under nonsinusoid…

2009

In this paper, an experimental approach is proposed for the metrological characterization of the static meters for reactive energy and for the individuation of their operating principle in nonsinusoidal conditions. The proposed approach was developed by starting from the only available accuracy test condition in the presence of the harmonics introduced by the standards for active static meters. In this paper, the proposed approach is described, and some experimental tests are presented, which were performed on some meters of different accuracy classes and with both known and unknown operating principles.

Total harmonic distortionEngineeringbusiness.industryControl engineeringCharacterization (materials science)MetrologyIdentification (information)Electric power systemHarmonicsElectrical and Electronic EngineeringbusinessInstrumentationAccuracy classSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltageEnergy measurements harmonic distortion power quality power systems static meters
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Polluting loads detection in power systems: a decision-making strategy based on nonactive power measurements

2010

In this paper a novel decision-making strategy is proposed for the detection of polluting loads in three-phase power systems. It makes use of simple indices, which are expressed as a function of some nonactive power quantities, previously proposed by the authors and derived from the approach of the IEEE Std. 1459–2000. The decision-making rules for the proposed strategy are presented and discussed, by means of some simulation tests.

Total harmonic distortionEngineeringbusiness.industryControl engineeringFunction (mathematics)AC powerPower (physics)power measurement harmonic distortion power definitions IEEE Std. 1459-2000 harmonic sourcesHarmonic analysisElectric power systemPower system simulationbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Suspension system performance optimization with discrete design variables

2013

Published version of an article in the journal: Structural and Multidisciplinary Optimization. Also available from the publisher at: http://dx.doi.org/10.1007/s00158-013-0888-7 Suspension systems on commercial vehicles have become an important feature meeting the requirements from costumers and legislation. The performance of the suspension system is often limited by available catalogue components. Additionally the suspension performance is restricted by the travel speed which highly influences the ride comfort. In this article a suspension system for an articulated dump truck is optimized in sense of reducing elapsed time for two specified duty cycles without violating a certain comfort th…

TruckEngineeringControl and Optimizationbusiness.industryVDP::Technology: 500::Mechanical engineering: 570Control engineeringwhole-body vibrationMultibody systemContinuous designoff-highway vehiclesComputer Graphics and Computer-Aided DesignComputer Science ApplicationsVibrationMechanical systemOperator (computer programming)Control and Systems EngineeringControl theorydiscrete design variablessuspensionhydraulic-mechanical system designSuspension (vehicle)businessEngineering design processride comfortSoftware
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A Cost-Effective Approach to Hardware-in-the-Loop Simulation

2012

This paper presents an approach for developing cost effective hardware-in-the-loop (HIL) simulation platforms for the use in controller software test and development. The approach is aimed at the many smaller manufacturers of e.g. mobile hydraulic machinery, which often do not have very advanced testing facilities at their disposal. A case study is presented where a HIL simulation platform is developed for the controller of a truck mounted loader crane. The total expenses in hardware and software is less than 10.000$.

TruckLoaderDynamic simulationSoftwarebusiness.industryComputer scienceController (computing)Local area networkHardware-in-the-loop simulationControl engineeringComputerApplications_COMPUTERSINOTHERSYSTEMSHydraulic machinerybusiness
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SAVU: A Statistical Approach for Uncertain Data in Dynamics of Axially Moving Materials

2012

In physics and engineering problems, model input is never exact. The effect of small uncertainties on the solution is thus an important question. In this study, a direct statistical-visual approach to approximate the solution set is investigated in the context of axially moving materials. The multidimensional probability distribution for the input uncertainties is assumed known. It is considered as a deterministic object, which is then mapped through the model. The resulting probability density of the model output is visualized. The proposed system consists of three non-trivial parts, which are briefly discussed: a multidimensional sampler, a density estimator, and a high dynamic range (HDR…

Uncertain dataApproximation errorBlack boxEstimatorProbability distributionControl engineeringProbability density functionTone mappingAlgorithmHigh dynamic range
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A sliding mode approach to H∞ synchronization of master–slave time-delay systems with Markovian jumping parameters and nonlinear uncertainties

2012

Author's version of an article published in the journal: Journal of the Franklin Institute. Also available from the publisher at: http://dx.doi.org/10.1016/j.jfranklin.2011.09.015 In this paper, a sliding-mode approach is proposed for exponential H∞ synchronization problem of a class of masterslave time-delay systems with both discrete and distributed time-delays, norm-bounded nonlinear uncertainties and Markovian switching parameters. Using an appropriate LyapunovKrasovskii functional, some delay-dependent sufficient conditions and a synchronization law, which include the masterslave parameters are established for designing a delay-dependent mode-dependent sliding mode exponential H∞ synch…

VDP::Mathematics and natural science: 400::Mathematics: 410::Applied mathematics: 413Computer Networks and CommunicationsComputer scienceApplied Mathematicssynchronization master-slave systems sliding mode delay H∞ performance nonlinear uncertaintiesVDP::Technology: 500::Mechanical engineering: 570Mode (statistics)Control engineeringMaster/slaveNonlinear systemControl and Systems EngineeringControl theorySignal ProcessingSynchronization (computer science)Markovian jumpingJournal of the Franklin Institute
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Structural Vibration Control for a Class of Connected Multistructure Mechanical Systems

2012

Published version of an article from the journal: Mathematical Problems in Engineering. Also available from the publisher:http://dx.doi.org/10.1155/2012/942910 A mathematical model to compute the overall vibrational response of connected multistructure mechanical systems is presented. Using the proposed model, structural vibration control strategies for seismic protection of multibuilding systems can be efficiently designed. Particular attention is paid to the design of control configurations that combine passive interbuilding dampers with local feedback control systems implemented in the buildings. These hybrid active-passive control strategies possess the good properties of passive contro…

VDP::Mathematics and natural science: 400::Mathematics: 410::Applied mathematics: 413Engineering:Informàtica::Automàtica i control [Àrees temàtiques de la UPC]Article SubjectGeneral MathematicsFeedback controlEdificis -- Vibració:Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC]Feedback control systemsControl d'estructures (Enginyeria)DamperPassive control:93 Systems Theory; Control [Classificació AMS]Control theoryControlStructural vibrationBuildings -- VibrationControl (linguistics):93 Systems Theory [Classificació AMS]Class (computer programming)business.industryVDP::Technology: 500::Building technology: 530lcsh:MathematicsGeneral EngineeringControl engineeringlcsh:QA1-939Mechanical systemlcsh:TA1-2040Sistemes de control per retroaccióBuildings--VibrationSeismic protectionStructural control (Engineering)lcsh:Engineering (General). Civil engineering (General)businessMathematical Problems in Engineering
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Discrete-time multioverlapping controller design for structural vibration control of tall buildings under seismic excitation

2012

Published version of an article from the journal: Mathematical Problems in Engineering. Also available from the publisher:http://dx.doi.org/10.1155/2012/636878 In this paper, a computationally effective strategy to obtain multioverlapping controllers via the Inclusion Principle is applied to design discrete-time state-feedback multioverlapping LQR con- trollers for seismic protection of tall buildings. To compute the corresponding control actions, the proposed semidecentralized controllers only require state information from neighboring stories. This particular configuration of information exchange allows introducing a dramatic reduction in the transmission range required for a wireless imp…

VDP::Mathematics and natural science: 400::Mathematics: 410::Applied mathematics: 413EngineeringArticle Subject:Informàtica::Automàtica i control [Àrees temàtiques de la UPC]General MathematicsLatency (audio)Edificis -- Vibració:Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC]Feedback control systemsCommunications systemControl d'estructures (Enginyeria)Earthquake resistant designSampling (signal processing):93 Systems Theory; Control [Classificació AMS]Control theoryControlWirelessBuildings -- VibrationInformation exchange:93 Systems Theory [Classificació AMS]business.industryVDP::Technology: 500::Building technology: 530Disseny antisísmiclcsh:MathematicsGeneral EngineeringControl engineeringlcsh:QA1-939Transmission (telecommunications)Discrete time and continuous timelcsh:TA1-2040Sistemes de control per retroaccióBuildings--VibrationStructural control (Engineering)businessReduction (mathematics)lcsh:Engineering (General). Civil engineering (General)
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