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1. (WO2017195020) A SECONDARY SENSE LOOP WITH FORCE FEEDBACK CAPABILITY
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Pub. No.: WO/2017/195020 International Application No.: PCT/IB2017/000547
Publication Date: 16.11.2017 International Filing Date: 11.05.2017
Chapter 2 Demand Filed: 02.03.2018
IPC:
G01C 19/5776 (2012.01)
G PHYSICS
01
MEASURING; TESTING
C
MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
19
Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
56
Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
5776
Signal processing not specific to any of the devices covered by groups G01C19/5607-G01C19/5719123
Applicants:
MURATA MANUFACTURING CO., LTD. [JP/JP]; 10-1, Higashikotari 1-chome Nagaokakyo-shi Kyoto 617-8555, JP
Inventors:
COLLIN, Rauli; FI
WJUGA, Konsta; FI
AALTONEN, Lasse; FI
Priority Data:
2016540311.05.2016FI
Title (EN) A SECONDARY SENSE LOOP WITH FORCE FEEDBACK CAPABILITY
(FR) BOUCLE DE DÉTECTION SECONDAIRE À CAPACITÉ DE RETOUR D'EFFORT
Abstract:
(EN) A secondary sense loop for a MEMS gyroscope comprises a secondary element comprising at least one mechanical resonator, an analog front end circuitry, a digital secondary loop circuitry and an analog back end circuitry. The digital secondary loop circuitry comprises a signal path receiving at its input an analog secondary input signal representing a detection motion of a mechanical resonator and providing at its output an output signal indicating an angular velocity said MEMS gyroscope is subject to, said signal path comprising an analog-to-digital converter configured to digitize the analog secondary input signal into a digitized secondary signal, and a digital force feedback circuitry controlling operation of a closed force feedback loop configured to adjust response function of the secondary sense loop.
(FR) Une boucle de détection secondaire d'un gyroscope MEMS comprend un élément secondaire comportant au moins un résonateur mécanique, un circuit analogique d'extrémité avant, un circuit numérique de boucle secondaire et un circuit analogique d'extrémité arrière. Le circuit numérique de boucle secondaire comprend un chemin de signal recevant à son entrée un signal d'entrée secondaire analogique représentant un mouvement de détection d'un résonateur mécanique et émettant en sortie un signal de sortie indiquant une vitesse angulaire à laquelle est soumis ledit gyroscope MEMS, ledit chemin de signal comprenant un convertisseur analogique-numérique conçu pour numériser le signal d'entrée secondaire analogique en un signal secondaire numérisé, et un circuit numérique de retour d'effort commandant le fonctionnement d'une boucle fermée de retour d'effort conçue pour ajuster la fonction de réponse de la boucle de détection secondaire.
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)