风力轮机叶片基于雷达的结构健康监测系统中温度补偿的趋势分解
Jonas Simon1, Jochen Moll1, Viktor Krozer1
1Department of Physics, Goethe University Frankfurt/Main, 60438 Frankfurt, Germany.
Sensors (Basel, Switzerland)
|February 10, 2024
概括
本研究引入了一种新的季节性趋势分解方法,以消除风力轮机叶片基于雷达的结构健康监测 (SHM) 中的温度影响,从而提高损坏检测的准确性.
科学领域:
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
- 信号处理 信号处理
背景情况:
- 结构健康监测 (SHM) 系统需要准确的温度补偿来实现最佳的损坏检测.
- 风力轮机叶片的基于雷达的SHM由于温度波动而面临挑战.
- 像最佳基线选择 (OBS) 这样的现有方法在动态温度条件下存在局限性.
研究的目的:
- 开发和评估一种新的季节性趋势分解方法,用于基于雷达的SHM中的温度效应补偿.
- 为了提高风力轮机叶片在不同温度下的损坏检测性能.
- 将拟议的方法与最佳基线选择 (OBS) 方法进行比较.
主要方法:
- 一个修改的季节性趋势分解,使用移动平均线来识别周期信号中的特定点趋势.
- 应用该方法来纠正风力轮机叶片在雷达测量 (5863.5 GHz) 中的温度效应.
- 实验验证使用31米风力轮机叶片在环境温度变化中的全尺度疲劳测试数据.
主要成果:
- 这种新的趋势分解方法有效消除了温度的影响,使得能够准确检测损伤.
- 与最佳基线选择 (OBS) 方法相比,提出的方法显示出更高的性能.
- 在波动的环境温度下,损坏检测的准确性得到了显著提高.
结论:
- 开发的季节性趋势分解技术为基于雷达的SHM中温度补偿提供了强大的解决方案.
- 这种方法提高了风力轮机叶片结构健康监测的可靠性和性能.
- 在不同的环境条件下精确检测损害是可实现的,与拟议的方法.
更多相关视频
10:03Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
Published on: October 5, 2018
8.2K
09:55Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
8.7K
相关概念视频
Wind Turbine Machine Models
133
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
133
Temperature Dependent Deformation
147
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
147
Doppler Effect - II
3.4K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
3.4K
Turbine-Governor Control
224
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
224
Design Example: Calculating Safe Diameter for Wind-Exposed Disc
95
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
95
Heating and Cooling Curves
22.8K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
22.8K
