%?script?file:?L_moment.m
%?Purpose:
%?This?program?is?used?to?estimate?the?scale?parameterthe?location?paramete?
%?and?the?shape?paramete?by?using?the?L-moment?method.
%??????????????????????????????Revision?History
%???????***********************************************************?
%???????*?Revision??Date?of?Release??Programmer????Modification???*
%???????*---------------------------------------------------------*
%???????*??A??????????9/09/2011???????Wei?Zhao????????????????????*
%???????***********************************************************?
%?????????DONGFANG?ELECTRIC?NEW?ENERGY?EQUIPMENT?（HANGZHOU）?CO.?LTD.?
%?2th?Jiang?dong?Road?Xiaoshan?district?Hangzhou?Zhejiang?Province?China
%????????????Phone:?+86?0571?82811005?Fax:?+86?0571?82811005
%?????????????Web?site:?www.dongfang.com?or?www.decnee.com
%?Contact?info:
%?Wei?Zhao?Wind?turbine?loads&strength
%?E-mail:?zhaowei.china@hotmail.com
%?Please?keep?this?original?info!?Thanks!
%?=========================================================================
data=sort（data）;
dim=size（data）;
n=dim（11）;
r=[0123];
br=[0;0;0;0];
for?j=1:n
?br（1）=br（1）+data（j）/n?;??
end
for?j=2:n
?br（2）=br（2）+（j-1）*data（j）/（n*（n-1））;
end
for?j=3:n
?br（3）=br（3）+（j-1）*（j-2）*data（j）/（n*（n-1）*（n-2））;
end
for?j=4:n
??br（4）=br（4）+（j-1）*（j-2）*（j-3）*data（j）/（n*（n-1）*（n-2）*（n-3））;
end
lambda=[0000];
lambda（1）=br（1）;
lambda（2）=2*br（2）-br（1）;
lambda（3）=6*br（3）-6*br（2）+br（1）;
lambda（4）=20*br（4）-30*br（3）+12*br（2）-br（1）;
tao=[0000];
tao（3）=lambda（3）/lambda（2）;
tao（4）=lambda（4）/lambda（2）;
yibu=lambda（1）+5*lambda（2）/（tao（4）-5*tao（3）-1）;
alfa=（lambda（1）-yibu）/gamma（log（10/（tao（4）-5*tao（3）+4））/log（2））;
k=log（2）/log（5/（tao（4）-5*tao（3）+4））;
weibullpara=[yibualfak];
%?=========================================================================

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-09-08?20:23??extrapolation\
?????文件??????891958??2011-09-08?20:17??extrapolation\Blade?root?Mx.bmp
?????文件??????891958??2011-09-08?20:17??extrapolation\Blade?root?My.bmp
?????文件??????891958??2011-09-08?20:18??extrapolation\Blade?tip?def.bmp
?????文件??????813963??2011-09-08?18:13??extrapolation\input.xlsx
?????文件????????1864??2011-09-08?14:42??extrapolation\L_momemt.m
?????文件????????7899??2011-09-08?20:18??extrapolation\main.m
?????文件??????150114??2011-09-08?20:23??extrapolation\output.xlsx
?????文件?????????504??2011-09-08?18:21??extrapolation\readme.txt
?????文件??????179424??2011-09-08?16:04??extrapolation\Wind?turbine?load?extrapolation?approach?and?equations.pdf
?????文件????????1329??2011-09-23?00:20??license.txt