【摘 要】
：
为深入研究基于振动理论的风力机叶片覆冰诊断技术,对不同覆冰状态下的风力机叶片进行动力特性模拟实验。通过研究各阶次下、各温度下振型曲率与覆冰的关系,定义覆冰位置特征
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为深入研究基于振动理论的风力机叶片覆冰诊断技术,对不同覆冰状态下的风力机叶片进行动力特性模拟实验。通过研究各阶次下、各温度下振型曲率与覆冰的关系,定义覆冰位置特征值和覆冰程度特征指标。借助Matlab软件拟合得到覆冰位置诊断阈值函数以及厚度计算公式,从而建立风力机叶片覆冰状态定量检测指标体系。最后对所提出的覆冰状态诊断指标体系做实例验算,结果表明该方法对风力机叶片覆冰状态识别具有较高的准确度。
In order to further study the diagnosis technology of wind turbine blade icing based on vibration theory, the dynamic characteristics of wind turbine blade under different icing condition are simulated. By studying the relationship between the mode shapes’ curvature and icing under various temperatures, the eigenvalues of icing position and the icing degree are defined. With the help of Matlab software, the diagnostic threshold function of ice coating location and the thickness calculation formula were obtained, and the index system of quantitative detection of icing condition of wind turbine blade was established. Finally, the proposed ice icing diagnosis index system is verified by an example. The results show that this method has high accuracy for ice icing condition identification of wind turbine blades.
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