Results 251 to 260 of about 200,046 (306)
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Accurate Torque Ripple Measurement for PMSM
IEEE Transactions on Instrumentation and Measurement, 2011Torque ripple in permanent-magnet synchronous motors is generally undesirable. Significant work has been done to minimize this torque, either by modifying the mechanical motor design or by careful controller design. Surprisingly, however, little work has been published on the accuracy of torque ripple measurement.
Greg Heins, Mark Thiele
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Contactless measurement of torque
Mechatronics, 2000Abstract This paper describes a micromechanical sensor for contactless detection of torque at rotating shafts. The sensor consists of a silicon chip and uses a magnetoelastic principle for measurement. A closed magnetic loop is formed by the sensor chip and a magnetoelastic layer which is applied to the shaft.
Frank Umbach +3 more
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Measurement of the Casimir torque
Nature, 2018Intermolecular forces are pervasive in nature and give rise to various phenomena including surface wetting1, adhesive forces in biology2,3, and the Casimir effect4, which causes two charge-neutral, metal objects in vacuum to attract each other.
David A T, Somers +3 more
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Physica B: Condensed Matter, 1995
Abstract The Fermi surface of 2 H -NbSe 2 has been investigated using the torque method in strong magnetic fields up to 27 T and at temperatures down to 0.4 K. We show that using the torque method it was possible to observe oscillations at orientations below ⊗ ⩽ 15° ⊗ is the angle between the c -axis and the magnetic field).
S. Rettenberger +8 more
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Abstract The Fermi surface of 2 H -NbSe 2 has been investigated using the torque method in strong magnetic fields up to 27 T and at temperatures down to 0.4 K. We show that using the torque method it was possible to observe oscillations at orientations below ⊗ ⩽ 15° ⊗ is the angle between the c -axis and the magnetic field).
S. Rettenberger +8 more
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On the measurement of the Casimir torque
physica status solidi (b), 2011AbstractWe discuss the possibility of measuring the recently proposed Casimir torque between bi‐refringent crystals, using a torsion pendulum in dark vacuum. By simulation, we analyze the effects of precession, surface polish, and torque due to stray charge. We determine the experimental conditions under which the torque might be measured, and conclude
Xiang Chen, John C. H. Spence
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Measurement of Torque During Mandibular Distraction
Journal of Craniofacial Surgery, 2008In a prospective study, 26 patients aged 9 days to 12 years old underwent mandibular distraction. There were 18 bilateral and 8 unilateral distractions performed. Five patients had previous distraction. Torque measurements were performed during the distraction process. A modest linear increase in torque was noted during the distraction process.
Fernando D, Burstein +2 more
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Measurement uncertainty of torque measurements with rotating torque transducers in power test stands
Measurement, 2007Abstract The objective of the presented study is to introduce a method for estimating the measurement uncertainty of torque measurements. Unlike the well-known approaches, the uncertainty shall take into account the effects acting during torque measurement in industrial applications like power test stands. These effects include the effects also known
Georg Wegener, Jürgen Andrae
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A precision torque balance for the measurement of small torques
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1955THE development and testing of torque motors for precision gyroscopes require the accurate measurement of the small torques developed. These are stall torques, and are measured at various angular positions of the rotor with respect to the stator. The magnitude of these torques is generally less than 50,000 dyne-centimeters (dyne-cm).
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The Torque Test as a Measure of Lateral Dominance
The Journal of Genetic Psychology, 1983The present study was designed to assess the validity of the Torque Test as a measure of functional lateral dominance in children. One hundred forty-nine children were administered the Torque Test and The Harris Test of Lateral Dominance. A low but statistically significant correlation was found between torque and total lateral dominance.
D, Kraemer +3 more
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Measurements of Engine Torque with the Intra-Bearing Torque Sensor
SAE Technical Paper Series, 1987<div class="htmlview paragraph">A miniature noncontact torque sensor has been developed to be mounted on an engine for use in engine control systems. The sensor is installed in a last main bearing of the engine crankshaft. The principle is based on the measurement of torque-induced change in magnetic properties of a crankshaft due to the magneto ...
Yutaka Nonomura +5 more
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