A High Speed Columnar Rotor Supported by a Magnetic Bearing

Rotordynamic and Friction Loss Measurements on a High Speed Laval Rotor Supported by Floating Ring Bearings

Rob Eling 1,2,*, Mathys te Wierik 1,2, Ron van Ostayen 1 and Daniel Rixen 3 1 Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands; [email protected] (M.t.W.); [email protected] (R.v.O.) 2 Research and Development, Mitsubishi Turbocharger and Engine Europe, Damsluisweg 2, 1332 EC Almere, The Netherlands 3 Institute o...

μ Control of a High Speed Spindle Thrust Magnetic Bearing

Experimental results demonstrate that μ synthesis provides an excellent tool for increasing the dynamic stiffness of thrust magnetic thrust bearings. Accurate system modeling and appropriate uncertainty descriptions are critical to obtaining such results and are described in detail. Both complex μ and mixed μ synthesis were used to design controllers. The performance of the μ controllers is com...

Rotor-bearing System Dynamics of a High

Stability and Bifurcation of Rotor Motion in a Magnetic Bearing

The equations of motion of a two-degrees-of-freedom mass in a magnetic bearing are non-linear in displacement, with geometric coupling of the magnetic bearing coupling the horizontal and vertical components of rotor motion. The non-linear forced response is studied in two ways: (1) using imbalance force; (2) using non-imbalance harmonic force. In the forced response, only periodic motion is inv...

The Development of a Flexible Rotor Active Magnetic Bearing System

A design process comprising aspects of modelling and analysis is developed, implemented and verified for a flexible rotor active magnetic bearing system. The system is specified to experience the first three critical frequencies up to an operating speed of 10,000 rpm. Rotor stability at critical frequencies places specific constraints on the equivalent stiffness and damping parameters of the ac...