Search results for "Inertia"

showing 3 items of 263 documents

Inertiaalianturit juoksun biomekaniikan tutkimisessa - vertailu perinteisiin analysointimenetelmiin

2013

Juoksutekniikan analysoimisessa käytetään usein liikeanalyysiä ja voimalevyjä, joiden avulla voidaan saada tarkkaa tietoa juoksun biomekaniikasta. Viime aikoina on kuitenkin kehitelty myös uusia laitteita, joilla juoksutekniikan analysoiminen onnistuu harjoitusolosuhteissa helposti. Yksi tälläinen laite on Runteq Oy:n kehittämä RunLab™-laite, joka antaa palautetta juoksutekniikasta perustuen inertiaaliantureihin. Tämän tutkimuksen tarkoituksena oli validoida RunLab™- laite juoksun vertikaalisen liikkeen, tukiajan ja nopeuden hidastumisen kontaktin aikana mittaamisessa. Biomekaanisia muuttujia mitattiin voimalevyjä, 3D- liikeanalyysiä sekä RunLab™-laittetta käyttäen. Tutkimuksessa oli aktiiv…

voimalevytkestävyysjuoksujuoksun biomekaniikkainertiaalianturitliikeanalyysibiomekaniikkajuoksu
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Oscillatory periodic pattern dynamics in hyperbolic reaction-advection-diffusion models

2022

In this work we consider a quite general class of two-species hyperbolic reaction-advection-diffusion system with the main aim of elucidating the role played by inertial effects in the dynamics of oscillatory periodic patterns. To this aim, first, we use linear stability analysis techniques to deduce the conditions under which wave (or oscillatory Turing) instability takes place. Then, we apply multiple-scale weakly nonlinear analysis to determine the equation which rules the spatiotemporal evolution of pattern amplitude close to criticality. This investigation leads to a cubic complex Ginzburg-Landau (CCGL) equation which, owing to the functional dependence of the coefficients here involve…

weakly nonlinear analysihyperbolic modelwave instabilityinertial effects cubic complex Ginzburg-Landau equation.Settore MAT/07 - Fisica Matematica
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An IPMSM torque/weight and torque/moment of inertia ratio optimization

2014

In this paper, a torque/weight and torque/moment of inertia ratio optimization procedure for interior permanent magnet syncronous motors (IPMSMs) is presented. More in detail, a performance comparison between several IPMSM rotor structures has been carried out in order to determine the optimum geometry that can maximize the torque/weight and torque/moment of inertia ratios. A commercial motor, with known electrical and mechanical characteristics, has been taken as reference. Its rotor structure has been modified several times, obtaining different rotor geometries and, therefore, many IPMSM models with different electrical and mechanical characteristics. The finite element method (FEM) analy…

ynchronous motorStall torquetorque-weight ratio optimizationMaterials scienceoptimisationpermanent magnet motorfinite element methodtorque-load-angle characteristicSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilaw.inventioninterior permanent magnet syncronous motorPermanent magnetmagnetisationControl theorylawRotorTorque sensorTorquetorque/weight ratioInduction motorDamping torqueFEM analysiLoad modelingTorque motorRotor (electric)finite element analysis;magnetisation;optimisation;permanent magnet motors;rotors;synchronous motors;IPMSM rotor structures;finite element method;interior permanent magnet syncronous motors;torque-load-angle characteristics;torque-moment of inertia ratio optimization;torque-weight ratio optimization;Induction motors;Load modeling;Permanent magnet motors;Permanent magnets;Rotors;Stators;Torque;FEM analysis;IPMSM;optimization;permanent magnets;torque/moment of inertia ratio;torque/weight ratioControl engineeringtorque-moment of inertia ratio optimizationStatorMoment of inertiafinite element analysiIPMSMDirect torque controlTorqueIPMSM rotor structureoptimizationtorque/moment of inertia ratio
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