公开(公告)号：US09645574B2

公开(公告)日：2017-05-09

申请号：US13395024

申请日：2010-09-07

Applicant: Bernd Frankenstein ,  Frank Schubert ,  Lars Schubert ,  Eberhard Schulze ,  Herbert Friedmann ,  Fritz-Otto Henkel ,  Carsten Ebert

Inventor： Bernd Frankenstein ,  Frank Schubert ,  Lars Schubert ,  Eberhard Schulze ,  Herbert Friedmann ,  Fritz-Otto Henkel ,  Carsten Ebert

IPC: G05B23/02 ,  F03D17/00

CPC classification number: G05B23/0254 ,  F03D17/00 ,  F05B2260/80 ,  F05B2270/334 ,  G05B2219/2619

Abstract: The invention relates to a method for monitoring the condition of rotor blades for wind turbines. It is therefore the object of the invention to increase the accuracy of the monitoring of the condition of rotor blades of wind turbines and to allow a localization of faults or defects and their exact description. In the method in accordance with the invention, eigenvibrations of a rotor blade occurring globally at the rotor blade and locally guided elastic waves are permanently detected with time and spatial resolution using a sensor network and actuator network attached to the rotor blade or using a network arrangement of ultrasound transducers. In addition, elastic waves which are guided periodically at predefinable time intervals and which are respectively emitted by an actuator or ultrasound transducer and detected by sensors or ultrasound transducers are in so doing inspected for variations of the emitted waves.

公开(公告)号：US20120253697A1

公开(公告)日：2012-10-04

申请号：US13395024

申请日：2010-09-07

Applicant: Bernd Frankenstein ,  Frank Schubert ,  Lars Schubert ,  Eberhard Schulze ,  Herbert Friedmann ,  Fritz-Otto Henkel ,  Carsten Ebert

Inventor： Bernd Frankenstein ,  Frank Schubert ,  Lars Schubert ,  Eberhard Schulze ,  Herbert Friedmann ,  Fritz-Otto Henkel ,  Carsten Ebert

IPC: G06F19/00 ,  G01N29/04

CPC classification number: G05B23/0254 ,  F03D17/00 ,  F05B2260/80 ,  F05B2270/334 ,  G05B2219/2619

Abstract: The invention relates to a method for monitoring the condition of rotor blades for wind turbines. It is therefore the object of the invention to increase the accuracy of the monitoring of the condition of rotor blades of wind turbines and to allow a localization of faults or defects and their exact description. In the method in accordance with the invention, eigenvibrations of a rotor blade occurring globally at the rotor blade and locally guided elastic waves are permanently detected with time and spatial resolution using a sensor network and actuator network attached to the rotor blade or using a network arrangement of ultrasound transducers. In addition, elastic waves which are guided periodically at predefinable time intervals and which are respectively emitted by an actuator or ultrasound transducer and detected by sensors or ultrasound transducers are in so doing inspected for variations of the emitted waves.

Abstract translation: 本发明涉及一种用于监测风力涡轮机转子叶片状况的方法。 因此，本发明的目的是提高对风力涡轮机转子叶片状态监测的准确性，并允许故障或缺陷的定位及其准确的描述。 在根据本发明的方法中，使用附接到转子叶片的传感器网络和致动器网络或使用网络布置来在时间和空间分辨率下永久地检测到在转子叶片处全局出现的转子叶片的本征振动和局部引导的弹性波 的超声换能器。 此外，以预定的时间间隔周期性地引导并且由致动器或超声换能器发射并且由传感器或超声换能器检测的弹性波正在如此地检查发射波的变化。