US 11,754,435 B2
Method, device and computer program for monitoring a rotating machine of an aircraft
Yosra Marnissi, Moissy-Cramayel (FR); Dany Abboud, Moissy-Cramayel (FR); and Mohammed El Badaoui, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/774,591
Filed by SAFRAN, Paris (FR)
PCT Filed Nov. 3, 2020, PCT No. PCT/FR2020/051978
§ 371(c)(1), (2) Date May 5, 2022,
PCT Pub. No. WO2021/089936, PCT Pub. Date May 14, 2021.
Claims priority of application No. 1912377 (FR), filed on Nov. 5, 2019.
Prior Publication US 2022/0412793 A1, Dec. 29, 2022
Int. Cl. G01H 1/00 (2006.01); G01M 13/045 (2019.01)
CPC G01H 1/006 (2013.01) [G01M 13/045 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for monitoring at least one rotating machine of an aircraft, the mehod comprising the following steps:
acquiring at least one measurement signal of the rotating machine by an acquisition module,
estimating instantaneous frequencies of sinusoidal components of the at least one measurement signal by an estimation module,
executing by a calculation module several successive iterations, each of which comprising:
updating complex envelopes of the sinusoidal components,
updating parameters of a noise model of the at least one measurement signal from the complex envelopes having been updated,
performing a convergence test as to whether the noise model converges from the preceding iteration to the current iteration, to:
in the negative, redo a new iteration,
in the affirmative, perform a calculation of the complex envelopes from the iterations carried out,
updating at each iteration regularisation parameters of the noise model by the calculation module from the complex envelopes having been updated,
and, updating, at each iteration, an auxiliary decoupling variable of the complex envelopes of the components between them in the noise model by the calculation module from the complex envelopes having been updated and from the parameters of the noise model having been updated.