静力载荷作用下的风电叶片空间轨迹精确测量模型
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摘要
采用几何变换方法推导简单、精准的三维空间轨迹跟随模型,能同时测量3个方向的精确挠度变化,并开发数据测量系统。以aeroblade2.5-59.5风电叶片为例进行静力加载试验,采用该测量系统和激光跟踪仪同时对叶尖进行轨迹测量。试验结果表明该系统能很好地跟随叶片尖部的空间变化轨迹,测试结果准确,3个方向的最大误差率仅为0.98%、1.00%和0.88%,具有很广阔的工程应用前景。
In the static test,the wind turbine blade can occur spatial torsion irregularly,and the traditional measuring method can only obtain the single direction deflection. For the first time,the geometric transformation method is used to derive a simple and accurate three-dimensional trajectory tracking model,which can measure the exact deflection of the three directions at the same time,and develop a data measurement system. Taking aeroblade 2.5-59.5 wind turbine blade as an example of the static loading test,the measurement system and laser tracker are used to simultaneously measure the trajectory measurement of blade tip. Test results show that the system can follow the spatial variation of the tip of the blade well,and the test results are accurate. The maximum error rates of the three directions are only 0.98%,1.00% and0.88%,which has a very broad engineering application prospects.
In the static test,the wind turbine blade can occur spatial torsion irregularly,and the traditional measuring method can only obtain the single direction deflection. For the first time,the geometric transformation method is used to derive a simple and accurate three-dimensional trajectory tracking model,which can measure the exact deflection of the three directions at the same time,and develop a data measurement system. Taking aeroblade 2.5-59.5 wind turbine blade as an example of the static loading test,the measurement system and laser tracker are used to simultaneously measure the trajectory measurement of blade tip. Test results show that the system can follow the spatial variation of the tip of the blade well,and the test results are accurate. The maximum error rates of the three directions are only 0.98%,1.00% and0.88%,which has a very broad engineering application prospects.
引文
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[2]Kong C,Bang J,Sugiyama Y.Structural investigation of composite wind turbine blade considering various load cases and fatigue life[J].Energy,2005,30(11-12):2101-2114.
[3]Lee Hak Gu,Kang Min Gyu,Park Ji Sang.Fatigue failure of a composite wind turbine blade at its root end[J].Composite Structures,2015,133:878-885.
[4]石可重,赵晓路,徐建中.大型风电机组叶片疲劳试验研究[J].太阳能学报,2011,32(8):1264-1268.[4]Shi Kezhong,Zhao Xiaolu,Xu Jianzhong.Research on fatigue test of large horizontal axis wind turbdine blade[J].Acta Energiae Solaris Sinica,2011,32(8):1264-1268.
[5]刘德顺,戴巨川,胡燕平.现代大型风电机组现状与发展趋势[J].中国机械工程,2013,24(1):125-135.[5]Liu Deshun,Dai Juchuan,Hu Yanping.Status and development trends of modern large scale wind turbines[J].China Mechanical Engineering,2013,24(1):125-135.
[6]张磊安,黄雪梅.风电叶片全尺寸静力试验加载力协调控制算法[J].太阳能学报,2015,36(6):1418-1422.[6]Zhang Leian,Huang Xuemei.Loading coordination control algorithm of full-scale static test for wind turbine blade[J].Acta Energiae Solaris Sinica,2015,36(6):1418-1422.
[7]廖高华,乌建中,蒋时春.风机叶片全尺寸静力多点加载的解耦控制[J].机械设计与研究,2015,31(1):134-138.[7]Liao Gaohua,Wu Jianzhong,Jiang Shichun.Decoupling control for wind turbine blade full-scale multi-point static loading[J].Machine Design and Research,2015,31(1):134-138.
[8]李瑞明,葛鹏,周江帆,等.兆瓦级风机叶片大载荷、大变形静态试验方案研究[J].强度与环境,2013,40(5):53-56.[8]Li Ruiming,Ge Peng,Zhou Jiangfan,et al.Research of structure test based on the large load/deformation turbine blade[J].Structure&Environment Engineering,2013,40(5):53-56.
[9]王超,李军向,张石强,等.大型风力机叶片全尺寸静力测试分析[J].玻璃钢/复合材料,2014,(2):23-26.[9]Wang Chao,Li Junxiang,Zhang Shiqiang,et al.Fullscale static test analysis of large wind turbine rotor blade[J].FRP/CM,2014,(2):23-26.