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1. (WO2018011034) MEASURING A TORSION ANGLE OF A ROTOR BLADE

Pub. No.:    WO/2018/011034    International Application No.:    PCT/EP2017/066764
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Thu Jul 06 01:59:59 CEST 2017
IPC: G01M 5/00
F03D 17/00
Applicants: WOBBEN PROPERTIES GMBH
Inventors: DIETZ, Dennis
KUHNKE, Chris
Title: MEASURING A TORSION ANGLE OF A ROTOR BLADE
Abstract:
The invention relates to a measuring system for determining a torsion of a rotor blade, comprising a reference shaft which is to be arranged in the rotor blade in the blade longitudinal direction, at least one mounting for the reference shaft in order to freely support the reference shaft in the rotor blade such that the rotor blade can be twisted freely about the reference shaft in such a manner that the reference shaft does not twist while the rotor blade is being twisted, and at least one rotational sensor which is arranged on the reference shaft for detecting a rotation of the rotor blade about the reference shaft in the region of the rotational sensor, wherein the rotational sensor outputs a rotational angle or another corresponding variable which describes the rotation of the rotor blade relative to the reference shaft. The invention additionally relates to a method for determining a torsion of the rotor blade, to a corresponding rotor blade, to a method for arranging a measuring system according to the invention in a rotor blade, and to a corresponding wind turbine comprising a rotor blade according to the invention and additionally or alternatively thereto to a measuring system according to the invention.