Rotor dynamic coefficients of a thrust active magnetic bearing consideringrunner tilt

This paper investigates the rotor dynamic coefficients of a thrust active m agnetic bearing when runner tilt is taken into account. The influence of ru nner tilt upon the load capacity and the dynamic forces and moments of a th rust active magnetic bearing is analysed. A total of 24 rotor dynamic coeff icients are defined to describe the dynamic behaviour of the thrust active magnetic bearing. A general method is presented to calculate these coeffici ents, which can be used conveniently for the coupled dynamic analysis when a rotor is supported by both radial and thrust magnetic bearings.