Drop analysis of Active Magnetic Bearing with rolling-sliding integrated auxiliary bearing

Abstract The Active Magnetic Bearing (AMB) technology is introduced in the High Temperature Reactor-Pebble-bed Modules (HTR-PM) demonstration nuclear power plant, which being constructed Shandong province, China. auxiliary bearing one of most important components guaranteeing reliability AMB. It also has an impact on whole reactor system. Compared with traditional bearing, a novel proposed by authors smaller force and rotor center orbit much more concentrated during drop. This paper establishes analytical model drop rolling-sliding integrated to analyze above phenomena. Based Hertz contact theory, complex structure inside rolling simplified through spring damping model. overall established. Then, according structural characteristics tangential rolling- sliding can be obtained applying angular momentum theorem. Finally, four-degree-of-freedom horizontal established calculate motion state rotor. helpful selection design for In further research this used forces application bearing.