(19)
(11)EP 3 885 729 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
15.12.2021 Bulletin 2021/50

(43)Date of publication A2:
29.09.2021 Bulletin 2021/39

(21)Application number: 21157595.6

(22)Date of filing:  17.02.2021
(51)International Patent Classification (IPC): 
G01L 3/04(2006.01)
G01L 3/14(2006.01)
(52)Cooperative Patent Classification (CPC):
G01L 3/04; G01L 3/1464
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 24.03.2020 JP 2020052762

(71)Applicant: Nabtesco Corporation
Tokyo 102-0093 (JP)

(72)Inventor:
  • KOMORI, Hirofumi
    Tokyo, 102-0093 (JP)

(74)Representative: Grünecker Patent- und Rechtsanwälte PartG mbB 
Leopoldstraße 4
80802 München
80802 München (DE)


(56)References cited: : 
  
      


    (54)TORQUE ESTIMATION DEVICE, TORQUE ESTIMATION METHOD, AND TORQUE ESTIMATION PROGRAM


    (57) A torque estimation device (8) includes: a current value obtaining unit (7) for obtaining a current value of a drive unit (30) of an actuator (3) included in a wind turbine (101); a storage unit (81) storing correspondence information representing correspondence between a torque occurring in a drive shaft (33) of the drive unit (30) and the current value; and an estimation unit (83) for estimating the torque occurring in the drive shaft (33) based on the current value obtained by the current value obtaining unit (7) and the correspondence information.







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