Search results for "Maximum torque"

showing 4 items of 4 documents

Maximum Torque Per Ampere control algorithm for low saliency ratio interior permanent magnet synchronous motors

2017

This paper presents an investigation on the comparison between the Maximum Torque Per Ampere (MTPA) and the Field Orientation Control (FOC) algorithms for interior permanent magnet synchronous machines (IPMSMs). In particular, this study was carried out on a small-power IPMSM with low salience ratio. Both control algorithms have been implemented in the Matlab/Simulink environment, obtaining promising results.

010302 applied physicsControl algorithmMaximum torque per ampere control algorithmPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmField orientationSalience (neuroscience)Control theoryMagnet0103 physical sciences0202 electrical engineering electronic engineering information engineeringInterior permanent magnet synchronous machineMATLABAmperecomputerMaximum torquecomputer.programming_language
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Experimental comparison of two control algorithms for low-saliency ratio interior permanent magnet synchronous motors

2018

In this paper, an experimental investigation on the comparison between the Maximum Torque Per Ampere (MTPA) and the Field Orientation Control (FOC) algorithms for interior permanent magnet synchronous machines (IPMSMs) is described, analyzed and discussed. This investigation was carried out on a small-power IPMSM with low saliency ratio. More in detail, after a previous simulation study, the control techniques have been experimentally implemented and validated through means of a dSPACE® rapid prototyping system. The performances of the two algorithms have been evaluated and compared, obtaining interesting results.

010302 applied physicsRapid prototypingControl algorithmElectromagneticsPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringlow saliency ratio motor02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmmaximum torque per ampere control algorithmControl theoryMagnet0103 physical sciencesAutomotive Engineering0202 electrical engineering electronic engineering information engineeringTorqueInterior permanent magnet synchronous machineAmpereMaximum torque
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Effects of different electrical stimulation currents and phase durations on submaximal and maximum torque, efficiency, and discomfort: a randomized c…

2021

Abstract Background Neuromuscular electrical stimulation (NMES) is an important therapeutic tool for rehabilitation. However, best stimulation parameters remain to be determined. Objective To determine the influence of different electrical stimulation currents and phase durations on torque, efficiency, and discomfort. Methods Using a cross-over design, kHz frequency alternating currents (KFAC) and pulsed currents (PC) with narrow (200 µs) or wide (500 µs) phase durations were randomly applied on knee extensor muscles of healthy participants with a minimum of seven days between sessions. The NMES-evoked torque, NMES-efficiency, and discomfort (visual 0−10 cm analogue scale) were measured for…

AdultMaleMaterials scienceAdolescentPhase (waves)Physical Therapy Sports Therapy and RehabilitationStimulationElectric Stimulation TherapyQuadriceps Muscle03 medical and health sciencesYoung Adult0302 clinical medicineIsometric ContractionTorqueHumansOrthopedics and Sports MedicineKneeMuscle SkeletalOriginal ResearchCross-Over StudiesKnee extensorsRehabilitation030229 sport sciencesCrossover studyElectric StimulationIntensity (physics)Phase durationTorqueMaximum torque030217 neurology & neurosurgeryBiomedical engineeringBrazilian journal of physical therapy
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Aging and strength training influence knee extensor intermuscular coherence during low- and high-force isometric contractions

2019

Aging is associated with reduced maximum force production and force steadiness during low-force tasks, but both can be improved by training. Intermuscular coherence measures coupling between two peripheral surface electromyography (EMG) signals in the frequency domain. It is thought to represent the presence of common input to alpha-motoneurons, but the functional meaning of intermuscular coherence, particularly regarding aging and training, remain unclear. This study investigated knee extensor intermuscular coherence in previously sedentary young (18–30 years) and older (67–73 years) subjects before and after a 14-week strength training intervention. YOUNG and OLDER groups performed maximu…

medicine.medical_specialtyStrength trainingPhysiologyMaximum voluntary contractionBeta-bandIsometric exerciseElectromyographyta3112lcsh:Physiology03 medical and health sciences0302 clinical medicinePhysical medicine and rehabilitationalpha-motoneuronMotor controlPhysiology (medical)Piper rhythmmotor controlMedicineta315Original Research030304 developmental biologymotoriikka0303 health sciencesvoluntary contractionKnee extensorsmedicine.diagnostic_testlcsh:QP1-981business.industryreidetMotor controlBeta-BandLower-limbmusculoskeletal systembody regionsikääntyminenAlpha-motoneuronFunctional significancevoimaharjoittelupiper rhythmbusinessMaximum torqueVoluntary contraction030217 neurology & neurosurgerylower-limblihasvoimaFrontiers in Physiology
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