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Lawrence A. Hawkins
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Journal Articles

Design and Prototype Test Data for a 300 kW Active Magnetic Bearings-Supported Turbine Generator for Natural Gas Pressure Letdown

Rasish Khatri, Lawrence A. Hawkins, Massimiliano Ortiz Neri, Francesco Cangioli, Davide Biliotti
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2020, 142(1): 011007.
Paper No: GTP-19-1411
https://doi.org/10.1115/1.4045277
Published Online: November 27, 2019
View Article titled, Design and Prototype Test Data for a 300 kW Active Magnetic Bearings-Supported Turbine Generator for Natural Gas Pressure Letdown
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Topics: Bearings, Design, Stress, Thrust, Pressure, Rotors, Generators, Magnetic bearings, Engineering prototypes, Transfer functions
Proceedings Papers

Demonstrated Operability and Reliability Improvements for a Prototype High-Speed Rotary-Disc Atomizer Supported on Active Magnetic Bearings

Rasish K. Khatri, Lawrence A. Hawkins, Claude Bazergui
Proc. ASME. GT2015, Volume 7A: Structures and Dynamics, V07AT30A015, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43803
https://doi.org/10.1115/GT2015-43803
View Paper titled, Demonstrated Operability and Reliability Improvements for a Prototype High-Speed Rotary-Disc Atomizer Supported on Active Magnetic Bearings
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Topics: Disks, Engineering prototypes, Magnetic bearings, Reliability, Impulse (Physics), Rotors, Design, Drugs, Electric motors, Machinery
Journal Articles

Test Results and Analytical Predictions for MIL-STD-167 Vibration Testing of a Direct Drive Compressor Supported on Magnetic Bearings

Lawrence A. Hawkins, Rasish K. Khatri, Koman B. Nambiar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2015, 137(5): 052507.
Paper No: GTP-14-1441
https://doi.org/10.1115/1.4028684
Published Online: May 1, 2015
View Article titled, Test Results and Analytical Predictions for MIL-STD-167 Vibration Testing of a Direct Drive Compressor Supported on Magnetic Bearings
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Topics: Compressors, Magnetic bearings, Rotors, Testing, Vibration, Displacement, Actuators, Stress, Bearings
Proceedings Papers

Shock Analysis for a Homopolar, Permanent Magnet Bias Magnetic Bearing System

Lawrence A. Hawkins
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A040, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-230
https://doi.org/10.1115/97-GT-230
View Paper titled, Shock Analysis for a Homopolar, Permanent Magnet Bias Magnetic Bearing System
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Topics: Magnetic bearings, Permanent magnets, Shock (Mechanics), Bearings, Clearances (Engineering), Control systems, Design, Gas turbines, Machine testing, Machinery
Proceedings Papers

Test Results and Analytical Predictions for MIL-STD-167 Vibration Testing of a Direct Drive Compressor Supported on AMB

Lawrence A. Hawkins, Rasish K. Khatri, Koman B. Nambiar
Proc. ASME. GT2014, Volume 7A: Structures and Dynamics, V07AT31A007, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25366
https://doi.org/10.1115/GT2014-25366
View Paper titled, Test Results and Analytical Predictions for MIL-STD-167 Vibration Testing of a Direct Drive Compressor Supported on AMB
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Topics: Compressors, Testing, Vibration, Rotors, Actuators, Magnetic bearings, Navy, Bearings, Control algorithms, Currents
Proceedings Papers

Analysis and Testing of a Magnetic Bearing Energy Storage Flywheel With Gain-Scheduled, MIMO Control

Lawrence A. Hawkins, Brian T. Murphy, John Kajs
Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A047, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0405
https://doi.org/10.1115/2000-GT-0405
View Paper titled, Analysis and Testing of a Magnetic Bearing Energy Storage Flywheel With Gain-Scheduled, MIMO Control
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Topics: Energy storage, Flywheels, Magnetic bearings, Testing, Design, Bearings, Control algorithms, Control systems, Damping, Engineering prototypes
Proceedings Papers

Combination Axial and Radial Active Magnetic Bearing With Improved Axial Bandwidth

Alexei V. Filatov, Lawrence A. Hawkins
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 871-877, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68645
https://doi.org/10.1115/GT2012-68645
View Paper titled, Combination Axial and Radial Active Magnetic Bearing With Improved Axial Bandwidth
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Topics: Electromagnetic actuators, Magnetic bearings
Journal Articles

Development of a 125 kW AMB Expander/Generator for Waste Heat Recovery

Lawrence A. Hawkins, Lei Zhu, Eric J. Blumber
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 2011, 133(7): 072503.
https://doi.org/10.1115/1.4002660
Published Online: March 16, 2011
View Article titled, Development of a 125 kW AMB Expander/Generator for Waste Heat Recovery
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Topics: Bearings, Generators, Heat recovery, Magnetic bearings, Rotors, Stress, Waste heat, Thrust, Testing, Design
Proceedings Papers

Development of a 125KW AMB Expander/Generator for Waste Heat Recovery

Lawrence A. Hawkins, Lei Zhu, Eric J. Blumber
Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 187-194, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22763
https://doi.org/10.1115/GT2010-22763
View Paper titled, Development of a 125KW AMB Expander/Generator for Waste Heat Recovery
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Topics: Generators, Heat recovery, Magnetic bearings, Heat, Biogas, Boilers, Design, Electronic packages, Exhaust systems, Fluids
Proceedings Papers

An Axial Position Sensor for Active Magnetic Bearings

Alexei V. Filatov, Lawrence A. Hawkins
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 99-106, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22524
https://doi.org/10.1115/GT2010-22524
View Paper titled, An Axial Position Sensor for Active Magnetic Bearings
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Topics: Magnetic bearings, Sensors