Running Problem using OpenFAST-Simulink

[yugao0912]

Hello,

I was trying to use OpenFAST_Simulink function to run some examples. I just modified the paths of relevant files including:

[this_dir,~,~] = fileparts(mfilename('fullpath')); fast.FAST_SFuncDir = 'D:\OpenFAST\Op_Simulink\F2Simulink'; %%%% NEED FOR SIMULINK fast.FAST_InputFile = '5MW_Land_Simulink.fst'; % FAST input file (ext=.fst) fast.FAST_directory = 'D:\OpenFAST\Op_Simulink\ROSCO-main\Test_Cases\5MW_Land_Simulink'; % Path to fst directory files

The version of Rosco is 2.8.0. I have added all the necessary paths in matlab, however, there are some mistakes when running the simulation. Please see below:

Error using Pre_LoadRotPerf Error loading file

Error in ReadWrite_FAST (line 47) Cx = Pre_LoadRotPerf(fullfile(fast.FAST_directory,PerfFileName(2:end-1)));

Error in runFAST (line 27) [Param,Cx] = ReadWrite_FAST(fast);

Could you please help me with this?

Thank you.

Best wishes, Yu Gao

[dzalkind]

Please see other issues and discussions about the matlab-toolbox, like this one: https://github.com/NREL/ROSCO/discussions/278#discussioncomment-7489802

Best, Dan

[yugao0912]

Please see other issues and discussions about the matlab-toolbox, like this one: #278 (comment)

Best, Dan

Hello Dan,

I am sorry. I have checked the link you sent but I still have no idea about this problem. Maybe I just missed some information.

Best wishes, Yu

[dzalkind]

Can you set a breakpoint and see where the error occurs?

[yugao0912]

Can you set a breakpoint and see where the error occurs?

Hello,

The error occurs at line 27:

[Param,Cx] = ReadWrite_FAST(fast);

Best, Yu

[EhsanASL92]

Can you set a breakpoint and see where the error occurs?

Hello,

The error occurs at line 27:

[Param,Cx] = ReadWrite_FAST(fast);

Best, Yu

I have the same problem, still looking for a solution!

[dzalkind]

Have you tried stepping inside that function to see what the issue is?

[yugao0912]

Have you tried stepping inside that function to see what the issue is?

Hello,

In the ReadWrite_FAST.m file, the error occurs at line 14:

I just changed the path in the runFAST.m file.

Best, Yu

[yugao0912]

Have you tried stepping inside that function to see what the issue is?

The error is

[Melancho7ee]

Dear @yugao0912 ,

I met similar errors like you before:

Error using Pre_LoadRotPerf
Error loading file

Error in ReadWrite_FAST (line 47)
Cx = Pre_LoadRotPerf(fullfile(fast.FAST_directory,PerfFileName(2:end-1)));

Error in runFAST (line 27)
[Param,Cx] = ReadWrite_FAST(fast);

My setting is:

[this_dir,~,~] = fileparts(mfilename('fullpath'));

% Compile FAST for use with simulink & mex using openfast docs
fast.FAST_SFuncDir     = './Simulink';  %%%% NEED FOR SIMULINK
fast.FAST_InputFile    = '5MW_ITIBarge_DLL_WTurb_WavesIrr.fst';   % FAST input file (ext=.fst)
fast.FAST_directory    = './5MW_ITIBarge_DLL_WTurb_WavesIrr';   % Path to fst directory files

As for me, the final reason is that there is no "Cp_Ct_Cq.NREL5MW.txt" in the directory of "fast.FAST_directory". After I copied this txt file to the './5MW_ITIBarge_DLL_WTurb_WavesIrr' directory, the error just disappered and everything is okay.

I'm not sure if your problem is the same as mine. The above contents are for your reference.

Best regards,