A Stability Analysis of a Rotor System With Electromagnetic Control Forces

[+] Author and Article Information
M. Zhu

Institute of Vibration Engineering Research, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, People’s Republic of China

J. Eng. Gas Turbines Power 120(1), 244-246 (Jan 01, 1998) (3 pages) doi:10.1115/1.2818083 History: Received September 12, 1994; Online November 19, 2007


The stability analysis of a rotor system with electromagnetic control forces is investigated. The formulas for the electromagnetic forces between the stator and rotor of the electromagnetic actuator are derived with respect to the displacements of the journal center and coil currents. The minimum setting values of the controller, and the relationship between mode shapes at the positions of sensors and actuators of the system, are given by using a perturbation method and Routh–Hurwitz theory.

Copyright © 1998 by The American Society of Mechanical Engineers
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