METHOD OF ROTOR VIBRATION DAMPING AND MAGNETODYNAMIC BEARING-DAMPER Russian patent published in 2008 - IPC F16C32/04 F16F15/03 B04B9/12 

FIELD: machine building industry.

SUBSTANCE: method of damping rotor vibrations consists in decreasing vibration amplitude by applying pulses of force directed opposite to the rotor deflection. Force pulses are generated by interaction of alternating space-variable magnetic field, or by electromagnetic field with a fixed source. Within the space nearby the rotor, at least, one high electric conductivity, including superconductivity, or high thermal conductivity element, or diamagnetic substance is arranged. The interaction pulse size is adjusted for every particular case depending upon vibration amplitude by the number of alternating field cycles and magnetic clearance size between the field source surfaces and the said high electric conductivity, including superconductivity, or high thermal conductivity element, or diamagnetic element. The invention proposes also a magneto dynamic bearing, a damper, incorporating a magnetic system with alternating magnetic field induced by a permanent magnet or an electric magnet, on the one hand, and on the other hand, a rotor or stator system made from the material featuring a high electric conductivity, or superconductivity, including super thermal conductivity. Here, the field magnetisation cycle or step-to rotor vibration amplitude ratio exceeds 1 at the equidistant with eccentricity equal to 0, while the rotor vibration amplitude-to-magnetic clearance ration below 0,8.

EFFECT: simpler design, higher reliability and damping properties.

6 cl, 4 dwg