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A method and application of fan blade load measurement based on fbg

A technology for load measurement and fan blades, used in measuring devices, testing of mechanical parts, force/torque/work measuring instruments, etc., to achieve the effect of high reliability and long service life

Active Publication Date: 2022-07-19
武汉船舶通信研究所
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  • Abstract
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Problems solved by technology

[0005] Aiming at at least one defect or improvement requirement of the prior art, the present invention provides a FBG-based fan blade load measurement method and application, aiming to solve the technical problem of how to measure the real-time load data of the blade root of the fan generator

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  • A method and application of fan blade load measurement based on fbg
  • A method and application of fan blade load measurement based on fbg
  • A method and application of fan blade load measurement based on fbg

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Embodiment Construction

[0045]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

[0046] The technical terms involved in the present invention are explained as follows:

[0047] FBG, fiber grating sensor.

[0048] figure 1 It is a schematic diagram of a FBG-based fan blade load measurement method provided by an embodiment of the present invention. like figure 1 As shown, a FBG-based fan blade load measurement method includes the following steps:

[0049] A corresponding fiber...

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Abstract

The invention discloses a FBG-based fan blade load measurement method and application. By arranging a corresponding fiber grating sensor group on each blade of a wind turbine, the sensor corresponding to different blade pitch angles of the blade is calibrated and recorded. The output wavelength change value of each fiber grating sensor in the group and the corresponding load value, using the blade equivalent rigidity coefficient matrix, the output wavelength change value of the sensor group and the load value corresponding to the blade pitch angle. The mapping relationship between the three , obtain the specific value of the calibrated blade equivalent rigidity coefficient matrix, measure the output wavelength change value of the sensor group in real time, and use the calibrated blade equivalent rigidity coefficient matrix specific value, the initial load value of the blade and the output wavelength change value of the sensor group to obtain the blade real-time load value.

Description

technical field [0001] The invention belongs to the technical field of fan load measurement, and more particularly relates to a FBG-based fan blade load measurement method. Background technique [0002] With the continuous development of science and technology, the traditional energy industry is gradually developing towards smart energy. As a representative of clean energy, wind power generation, the use of intelligent control technology for the entire wind power generation system is imminent. Wind turbine blades are the core components of wind turbines to capture wind energy, and their forces are complex and changeable. Overload and fatigue will cause the blades of wind turbines to fail to work normally, and even lead to damage to the blades. [0003] Independent pitch technology (IPC) can reduce the load force on the wind turbine blades and reduce the operating load of the wind turbine. The full name of IPC is Independent Pitch Control. The so-called independent pitch te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00G01M13/00G01D21/02
Inventor 钱飞黄伟程芹黎佳石晶
Owner 武汉船舶通信研究所
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