The Experimental Testing of an Active Magnetic Bearing/Rotor System Undergoing Base Excitation

Simple item page
dc.contributor.authorClements, Joshua Ryanen
dc.contributor.committeechairKasarda, Mary E. F.en
dc.contributor.committeememberWicks, Alfred L.en
dc.contributor.committeememberKirk, R. Gordonen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:48:23Zen
dc.date.adate2000-11-30en
dc.date.available2014-03-14T20:48:23Zen
dc.date.issued2000-08-25en
dc.date.rdate2001-11-30en
dc.date.sdate2000-11-27en
dc.description.abstractActive Magnetic Bearings (AMB) are a relatively recent innovation in bearing technology. Unlike conventional bearings, which rely on mechanical forces originating from fluid films or physical contact to support bearing loads, AMB systems utilize magnetic fields to levitate and support a shaft in an air-gap within the bearing stator. This design has many benefits over conventional bearings. The potential capabilities that AMB systems offer are allowing this new technology to be considered for use in state-of-the-art applications. For example, AMB systems are being considered for use in jet engines, submarine propulsion systems, energy storage flywheels, hybrid electric vehicles and a multitude of high performance space applications. Many of the benefits that AMB systems have over conventional bearings makes them ideal for use in these types of vehicular applications. However, these applications present a greater challenge to the AMB system designer because the AMB-rotor system may be subjected to external vibrations originating from the vehicle's motion and operation. Therefore these AMB systems must be designed to handle the aggregate vibration of both the internal rotor dynamic vibrations and the external vibrations that these applications will produce. This paper will focus on the effects of direct base excitation to an AMB/rotor system because base excitation is highly possible to occur in vehicular applications. This type of excitation has been known to de-stabilize AMB/rotor systems therefore this aspect of AMB system operation needs to be examined. The goal of this research was to design, build and test a test rig that has the ability to excite an AMB system with large amplitude base excitation. Results obtained from this test rig will be compared to predictions obtained from linear models commonly used for AMB analysis and determine the limits of these models.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-11272000-114011en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11272000-114011/en
dc.identifier.urihttp://hdl.handle.net/10919/35827en
dc.publisherVirginia Techen
dc.relation.haspart2josh_clements.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectMagnetic Bearing Equivalent Stiffness and Dampingen
dc.subjectMagnetic Bearing Base Excitation Modelingen
dc.titleThe Experimental Testing of an Active Magnetic Bearing/Rotor System Undergoing Base Excitationen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2josh_clements.pdf
Size:
1.33 MB
Format:
Adobe Portable Document Format
Download

Collections

Masters Theses