Results 181 to 190 of about 1,006 (231)
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Mathematical modeling of continuous multi-stepped rotor-bearing systems
Applied Mathematical Modelling, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Arthur Mereles, Katia Lucchesi Cavalca
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Modeling of Multi-stepped Rotor-bearing Systems by the Continuous Segment Method
Applied Mathematical Modelling, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Arthur Mereles, Katia Lucchesi Cavalca
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DYNAMIC ANALYSIS OF MULTI-STEPPED, DISTRIBUTED PARAMETER ROTOR-BEARING SYSTEMS
Journal of Sound and Vibration, 1999Exact solutions for a distributed parameter system are of great use for the physical understanding of the system or the sensitivity analysis and design of the system. However, exact or closed-form solutions for multi-stepped rotor-bearing systems with distributed parameters have been rarely investigated.
S.-W. HONG, J.-H. PARK
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Piezoelectric inertial stepping motor with spherical rotor
Review of Scientific Instruments, 1992A piezoelectric inertial stepping motor for multiple rotations of small optical or mechanical components has been developed. The spherical rotor can be rotated about two or three orthogonal axes. Angular step resolution of 1 arcsec is achieved and the maximum speed lies in the range of degrees per second. The design is compact and eliminates mechanical
L. Howald, H. Rudin, H.-J. Güntherodt
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Light-Driven Molecular Motors: Imines as Four-Step or Two-Step Unidirectional Rotors
Journal of the American Chemical Society, 2014Chiral N-alkyl imines undergo unidirectional rotation induced by light and heat, thus providing a new class of molecular motors. Depending on the conformational flexibility of the stator part (the carbonyl residue) and the nitrogen inversion barrier of the rotor part (the amine residue) in the molecule, the operation mode of the motor can be controlled
Lutz Greb, Jean-Marie Lehn
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COMPLIANT CORE-ROTOR STEPPING MOTORS
Electric Machines & Power Systems, 1995ABSTRACT The present paper introduces an attractive new type of stepping motors employing a compliant core rotor and conventional 3-phase stator. The stepping of mmf's are produced by a suitable electronic circuit designed specially for this purpose. Also, the MOTOROLA-6809 microprocessor is used to control the motor operation The motor is tested by ...
A. A. HASSANEIN +2 more
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FREE BENDING VIBRATION OF A MULTI-STEP ROTOR
Journal of Sound and Vibration, 1999The free bending vibration of a rotating shaft composed of multi-step segments with each segment having a uniform circular cross-section has been analyzed using the Timoshenko beam model. Torque has been applied at each end as in a power-transmission shaft and the gyroscopic effect due to the shaft rotation has also been considered.
O.S. JUN, J.O. KIM
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Vibration characteristics of electric drive system considering rotor-step skewing
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2023Electric vehicle has been gaining popularity in the worldwide market. The drive system for an electric vehicle usually consists of a permanent magnet synchronous motor (PMSM) and a two-stage gear system. The vibration characteristics of electric drive system is of great importance to the noise and durability performance.
Dong Guo +4 more
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