A Magnetic Suspension And Excitation System For Spin Vibration Testing Of Turbomachinery Blades
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A Magnetic Suspension And Excitation System For Spin Vibration Testing Of Turbomachinery Blades
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Author :
language : en
Publisher:
Release Date : 1998
A Magnetic Suspension And Excitation System For Spin Vibration Testing Of Turbomachinery Blades written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
A Magnetic Suspension And Excitation System For Spin Vibration Testing Of Turbomachinary Blades Nasa Tm 1998 206976 Aug 6 1998
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1999*
A Magnetic Suspension And Excitation System For Spin Vibration Testing Of Turbomachinary Blades Nasa Tm 1998 206976 Aug 6 1998 written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999* with categories.
Research Technology 2002
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Author :
language : en
Publisher: DIANE Publishing
Release Date :
Research Technology 2002 written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Control Study For Five Axis Dynamic Spin Rig Using Magnetic Bearings
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-20
Control Study For Five Axis Dynamic Spin Rig Using Magnetic Bearings written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-20 with categories.
The NASA Glenn Research Center (GRC) has developed a magnetic bearing system for the Dynamic Spin Rig (DSR) with a fully suspended shaft that is used to perform vibration tests of turbomachinery blades and components under spinning conditions in a vacuum. Two heteropolar radial magnetic bearings and a thrust magnetic bearing and the associated control system were integrated into the DSR to provide magnetic excitation as well as non-contact mag- netic suspension of a 15.88 kg (35 lb) vertical rotor with blades to induce turbomachinery blade vibration. For rotor levitation, a proportional-integral-derivative (PID) controller with a special feature for multidirectional radial excitation worked well to both support and shake the shaft with blades. However, more advanced controllers were developed and successfully tested to determine the optimal controller in terms of sensor and processing noise reduction, smaller rotor orbits, more blade vibration amplitude, and energy savings for the system. The test results of a variety of controllers that were demonstrated up to 10.000 rpm are shown. Furthermore, rotor excitation operation and conceptual study of active blade vibration control are addressed. Choi, Benjamin and Johnson, Dexter and Provenza, Andrew and Morrison, Carlos and Montague, Gerald Glenn Research Center NASA/TM-2003-212295, GT2003-38912, NAS 1/15:212295, E-13857
Fully Suspended Five Axis Three Magnetic Bearing Dynamic Spin Rig With Forced Excitation
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Author : Carlos R. Morrison
language : en
Publisher: BiblioGov
Release Date : 2013-08
Fully Suspended Five Axis Three Magnetic Bearing Dynamic Spin Rig With Forced Excitation written by Carlos R. Morrison and has been published by BiblioGov this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08 with categories.
The Five-Axis, Three-Magnetic-Bearing Dynamic Spin Rig, a significant advancement in the Dynamic Spin Rig (DSR), is used to perform vibration tests of turbomachinery blades and components under rotating and nonrotating conditions in a vacuum. The rig has as its critical components three magnetic bearings: two heteropolar radial active magnetic bearings and a magnetic thrust bearing. The bearing configuration allows full vertical rotor magnetic suspension along with a feed-forward control feature, which will enable the excitation of various natural blade modes in bladed disk test articles. The theoretical, mechanical, electrical, and electronic aspects of the rig are discussed. Also presented are the forced-excitation results of a fully levitated, rotating and nonrotating, unbladed rotor and a fully levitated, rotating and nonrotating, bladed rotor in which a pair of blades was arranged 180 degrees apart from each other. These tests include the bounce mode excitation of the rotor in which the rotor was excited at the blade natural frequency of 144 Hz. The rotor natural mode frequency of 355 Hz was discerned from the plot of acceleration versus frequency. For nonrotating blades, a blade-tip excitation amplitude of approximately 100 g/A was achieved at the first-bending critical (approximately 144 Hz) and at the first-torsional and second-bending blade modes. A blade-tip displacement of 70 mils was achieved at the first-bending critical by exciting the blades at a forced-excitation phase angle of 908 relative to the vertical plane containing the blades while simultaneously rotating the shaft at 3000 rpm.
Experimental Spin Testing Of Integrally Damped Composite Fan Blades
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Author : John B. Kosmatka
language : en
Publisher:
Release Date : 2004
Experimental Spin Testing Of Integrally Damped Composite Fan Blades written by John B. Kosmatka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aerofoils categories.
Control Study For Five Axis Dynamic Spin Rig Using Magnetic Bearings
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Author :
language : en
Publisher:
Release Date : 2003
Control Study For Five Axis Dynamic Spin Rig Using Magnetic Bearings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Proceedings Of The Asme Turbo Expo
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Author :
language : en
Publisher:
Release Date : 2003
Proceedings Of The Asme Turbo Expo written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Gas-turbines categories.
Structural Mechanics And Dynamics Branch
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Author :
language : en
Publisher:
Release Date : 2003
Structural Mechanics And Dynamics Branch written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Fully Suspended Five Axis Three Magnetic Bearing Dynamic Spin Rig With Forced Excitation
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Author : Carlos R. Morrison
language : en
Publisher:
Release Date : 2004
Fully Suspended Five Axis Three Magnetic Bearing Dynamic Spin Rig With Forced Excitation written by Carlos R. Morrison and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.