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1. (WO2017137681) METHOD FOR DETECTING A MOVEMENT IN A RADIAL PLANE OF A MECHANICAL ASSEMBLY COMPRISING A ROTARY MEMBER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/137681 International Application No.: PCT/FR2017/050249
Publication Date: 17.08.2017 International Filing Date: 03.02.2017
IPC:
G01M 13/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
13
Testing of machine parts
Applicants:
NTN-SNR ROULEMENTS [FR/FR]; 1 rue des Usines 74000 Annecy, FR
Inventors:
HATAKEYAMA, Wataru; FR
LE GOFF, Alexis; FR
Agent:
SAYETTAT, Julien; FR
Priority Data:
165114612.02.2016FR
Title (EN) METHOD FOR DETECTING A MOVEMENT IN A RADIAL PLANE OF A MECHANICAL ASSEMBLY COMPRISING A ROTARY MEMBER
(FR) PROCÉDÉ DE DÉTECTION D'UN DÉPLACEMENT DANS UN PLAN RADICAL D'UN ENSEMBLE MÉCANIQUE COMPRENANT UN ORGANE TOURNANT
Abstract:
(EN) The invention relates to a method which provides for a prior analysis for identifying a frequency signal that is characteristic of the appearance of movement on a revolution of said member, and the iterative steps of: synchronous measurement, in at least two positions distributed angularly around the rotary member, of a raw signal comprising a contribution associated with the movements in the radial plane of said member and a contribution linked to the instantaneous speed of rotation of said member; using said raw signals to obtain a time signal which is substantially independent from the instantaneous speed of rotation of the member; angular sampling of said time signal so as to obtain a sampled signal which represents movements of the member in the radial plane; harmonic spatial analysis of the sampled signal so as to obtain a spectrum of movement of the member in the radial plane; and monitoring the energy of the spectrum for the characteristic signature so as to deduce therefrom the appearance of the corresponding movement as a function of said energy.
(FR) L'invention concerne un procédé prévoyant une analyse préalable d'identification d'une signature fréquentielle caractéristique de l'apparition du déplacement sur un tour de rotation dudit organe, et les étapes itératives de : mesure synchrone en au moins deux positions réparties angulairement autour de l'organe tournant d'un signal brut comprenant une contribution liée aux déplacements dans le plan radial dudit organe et une contribution liée à la vitesse instantanée de rotation dudit organe; exploitation desdits signaux bruts pour obtenir un signal temporel qui est sensiblement indépendant de la vitesse instantanée de rotation de l'organe; échantillonnage angulaire dudit signal temporel pour obtenir un signal échantillonné qui est représentatif des déplacements de l'organe dans le plan radial; analyse harmonique spatiale du signal échantillonné pour obtenir un spectre de déplacement de l'organe dans le plan radial; surveillance de l'énergie du spectre pour la signature caractéristique de sorte, en fonction de ladite énergie, à en déduire l'apparition du déplacement correspondant.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)