Zobrazeno 1 - 10
of 25
pro vyhledávání: '"R. R. Humphris"'
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 112:463-469
Many rotating machines such as compressors, turbines, and pumps have long thin shafts with resulting vibration problems. They would benefit from additional damping near the center of the shaft. Magnetic dampers have the potential to be employed in th
Publikováno v:
Proceedings of the 24th Intersociety Energy Conversion Engineering Conference.
The authors investigate the use of a rotating force field applied to a stationary rotor to investigate the critical speeds, amplification factor, rubs and other rotor dynamic phenomena while the shaft remains stationary. A laboratory rotor is support
Autor:
R. R. Humphris, Carl R. Knospe
Publikováno v:
1992 American Control Conference.
In the last decade, active magnetic bearings for rotating machinery have moved from a promising concept to industrial application. Because these bearings are active devices, they permit new methods of vibration reduction. Two methods of control have
Publikováno v:
Rotordynamics ’92 ISBN: 9783540197546
This paper describes the application of an open loop control technique for the attenuation of unbalance response in a high speed rotor. The test rig is a mock up of a dual wheel compressor with an operating speed range of 30,000 to 70,000 rpm. The ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa1d4a7310036de6638a25690f048e2
https://doi.org/10.1007/978-1-4471-1979-1_3
https://doi.org/10.1007/978-1-4471-1979-1_3
Publikováno v:
13th Biennial Conference on Mechanical Vibration and Noise: Vibration Analysis — Analytical and Computational.
Compressors, turbines and other rotating machines often have long thin shafts which may cause vibration problems. An electromagnetic damper placed on the rotor of a machine represents one method of controlling high levels of vibrations. This paper di
Publikováno v:
Tribology Transactions. 32:179-188
This is a companion paper to “ACTIVE MAGNETIC CONTROL OF OSCILLATORY AXIAL SHAFT VIBRATIONS IN SHIP SHAFT TRANSMISSION SYSTEMS—Part 1: System Natural Frequencies and Laboratory Scale Model.” Details of the modeling process were presented in tha
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 108:624-632
Magnetic journal bearings are coming into increasing use in industry today. They are primarily used to replace either rolling element or fluid film bearings in rotating machinery. The major advantages are elimination of oil systems and associated sea
Publikováno v:
Journal of Vibration and Acoustics. 106:239-249
The calculation of the damped eigenvalues of a large multistation gas turbine by the complex matrix transfer procedure may encounter numerical difficulties, even on a large computer due to numerical round-off errors. In this paper, a procedure is pre
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 8:1527-1543
Absolute cross sections, differential in angle and energy of the scattered particles, are obtained for single charge transfer and elastic scattering of He2+ from He for incident ion energies 200 eV to 600 eV and lab angles 2.5 degrees to 20 degrees .
Publikováno v:
Journal of Tribology. 111:331-336
Magnetic bearings are subject to performance limits which are quite different from those of conventional bearings. These are due in part to the inherent nonlinearity of the device and in part to its electrical nature. Three important nonideal behavio