Rotordynamic Response and Identification of AMB Machining Spindle

Authors

Jerzy T. Sawicki, Cleveland State UniversityFollow
Eric H. Maslen, University of Virginia

Document Type

Conference Proceeding

Publication Date

5-2007

Publication Title

Paper no. GT2007-28018

Abstract

Active magnetic bearings (AMBs) are a very promising technology for machining applications. They offer a number of advantages compared to classical bearings, such as high speed capability, rotation accuracy, high stiffness,and possibility of active displacement tracking. This paper presents a modeling approach for a high-speed machining spindle-AMBs system based on finite-element model analysis coupled to experimental modal identification. The extracted frequency response functions, measured between the magnetic bearing journals and the sensor locations, are compared with the responses of a rotor model, and a calibration procedure is applied to reduce the discrepancies between the model and the measured data.

Recommended Citation

Sawicki, J.T. and Maslen, E.H., Rotordynamic Response and Identification of AMB Machining Spindle, Paper GT2007-28018, ASME Turbo Expo Conference: Power for Land, Sea, and Air , May 14-17, 2007, Montreal, Canada.

DOI

10.1115/GT2007-28018

Volume

5