Rotordynamic Response and Identification of AMB Machining Spindle
Paper no. GT2007-28018
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.
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.