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RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

Rotodynamic Modeling of an Actively Controlled Magnetic Bearing Gas Turbine Engine

[+] Author and Article Information
B. M. Antkowiak

C. S. Draper Laboratory, Inc., 555 Technology Square, Cambridge, MA 02139

F. C. Nelson

College of Engineering, Tufts University, Medford, MA 02155

J. Eng. Gas Turbines Power 120(3), 621-625 (Jul 01, 1998) (5 pages) doi:10.1115/1.2818191 History: Received February 03, 1997; Online November 19, 2007

Abstract

This paper summarizes the development of a finite element rotordynamic solution used in a closed loop simulation for a magnetic bearing rotor system in a gas, turbine engine. A magnetic bearing controlled rotor is analyzed, and the state dynamics matrix [A], the shaft control influence matrix [B], and the sensor matrix [C] are constructed. Bode plots of the state-space transfer function are also constructed and compared to the results of the rotor dynamic model.

Copyright © 1998 by The American Society of Mechanical Engineers
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