W-3参数方程组的数值解法

THE NUMERIC SOLUTION FOR THE W-3 PARAMETER EQUATION SYSTEM

中文关键词:  W-3分布函数  参数估算方法  参数方程组

英文关键词:W-3 distribution  Method of estimating parameters  Parameter equation system

中文摘要:

      从W-3风频模型的期望值及其拟合误差出发,分别用矩法和极值法导出关于Weibul参数的两组方程.结合实测风况资料用数值法求解,获得相应的W-3风频参数,通过几个气象台站的实测资料计算、比较,证明这两种方法给出的参数其拟合精度均高于W-2模型给出的结果.

英文摘要:

      Based on the expectative value of the W-3 modole of wind frequancy and their fitting error,two equation groups about Weibull parameters bave been derived out.Solving these equations,the coresponding W-3 parameters are obtained.Comparing with the actual data of saveral meteorolo gical observatories,it have proved that these two methods have much higher fit precision than the W-3 modal does.