US 12,276,540 B2
Rotating machine vibration monitoring process for detecting degradations within a rotating machine fitted with magnetic bearings
Salim Benbouzid, Montigny-les-Cormeilles (FR); Joaquim Da Silva, Sennely (FR); and Joel Mouterde, Blaru (FR)
Assigned to SKF Magnetic Mechatronics, Saint-Marcel (FR)
Filed by SKF Magnetic Mechatronics, Saint-Marcel (FR)
Filed on Aug. 16, 2022, as Appl. No. 17/888,557.
Claims priority of application No. 21194716 (EP), filed on Sep. 3, 2021.
Prior Publication US 2023/0075064 A1, Mar. 9, 2023
Int. Cl. G01H 1/00 (2006.01); G01M 13/00 (2019.01); G08B 21/00 (2006.01); G08B 21/18 (2006.01)
CPC G01H 1/003 (2013.01) [G01M 13/00 (2013.01); G08B 21/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotating machine vibration monitoring process for detecting degradations within a rotating machine comprising:
a rotor levitated by magnetic bearings, the magnetic bearings comprising at least a position sensor and at least a magnetic actuator, the process comprising the following steps:
defining a set of excitations that does not destabilizes the rotating machine,
injecting the set of excitations in the rotating machine through the magnetic actuator of the at least one magnetic bearing,
measuring a response of the rotating machine to the set of excitations through the position sensor of the at least one magnetic bearings,
calculating parameters using available data pertaining to at least a
part of the machine along with criteria based on the calculated parameters,
checking whether the response verifies at least one criterium,
if the response does not verify the at least one criterium, adjusting the properties of the set of excitations and resuming the process at the injection step,
if the response verifies the at least one criterium, determining at least one condition indicator based on the response measured,
determining if an at least one alarm is to be triggered based on the at least one condition indicator determined.