Hysys Column Stage Error

Hello. I try to optimize the columns in Aspen Hysys via Matlab.

And I have a problem to access the column stage control.

aspen = actxserver('Hysys.Application.V12.1');
            FileNamePath = 'Aspen Name';
            simcase = aspen.SimulationCases.Open([cd, strcat('\', FileNamePath, '.hsc')]);
            Oper = simcase.Flowsheet.Operation;
            Oper.Item('T-100').Columnflowsheet.Operation.Item("Main_TS")

When I do this, there is an error.

Error using Interface.~~~~~/Item

Invoke Error, Dispatch Exception: Not spefied error.

Anyone know, how to access the stages of side inlet flows in columns??

Thank you.

Answer 1

[Angelo Yeo]

It looks like the error is related to "invoke". Would you invoke simulation cases and see if you can proceed?

aspen = actxserver('Hysys.Application.V12.1');
FileNamePath = 'Aspen Name';
simcase = aspen.SimulationCases.Open([cd, strcat('\', FileNamePath, '.hsc')]);
simcase.invoke('Activate'); % Add this
Oper = simcase.Flowsheet.Operation;
Oper.Item('T-100').Columnflowsheet.Operation.Item("Main_TS")

Also, you can find a good example of how to manipulate Hysys via COM server in the link below.

HYSYS-MATLAB LINK

[지원 구]

Thank you for reply!

I add the simcase.invoke('Activate');

And I can control the other values like changing the stream temperature.

But, the Main_TS can't be accessed, and is still not working.

[Angelo Yeo]

Do you get the same error message? It would be good if you can provide reproducible steps and error messages.

[지원 구]

Thank you. Below code is my code and other codes are running well.

Also, Operations.Item('T-100').Columnflowsheet.Operation is run well. But, accessing to the Main_TS is not allowed.

aspen = actxserver('Hysys.Application.V12.1');
FileNamePath = 'File name';
simcase = aspen.SimulationCases.Open([cd, strcat('\', FileNamePath, '.hsc')]);
simcase.Visible = true;
simcase.invoke('Activate');

Flowsheet = simcase.Flowsheet;
Operations = simcase.Flowsheet.Operation;
Streams = simcase.Flowsheet.MaterialStreams;
Energies = simcase.Flowsheet.EnergyStreams;
Column1 = simcase.Flowsheet.Operation.Item('T-100');    % T-100: Column1 name
Column2 = simcase.Flowsheet.Operation.Item('T-101');    % T-101: Column2 name
Solve = simcase.Solver;

Solve.CanSolve = 0;
Streams.Item('1').PressureValue = pressure_column2; % Changed well
Solve.CanSolve = 1;
Operations.Item('SPRDHT-1').Cell('B2').CellValue = trayNumber_column2;  % Changed well
Column1.ColumnFlowsheet.Run;    % Run well
Column2.ColumnFlowsheet.Run;    % Run well
Converge1 = Operations.Item('T-100').ColumnFlowsheet.CfsConverged;    % Read well
Converge2 = Operations.Item('T-101').ColumnFlowsheet.CfsConverged;    % Read well

% ================================== About Main_TS  ==================================
% But to access the optional inlet streams step by step. 
% I run the below code at first, to see that the Main_TS path running well.
Operations.Item('T-100').Columnflowsheet.Operation.Item("Main_TS"); % Error

% Error message is 
% Error using Interface.~~~~~~/Item
% Invoke Error, Dispatch Exception: Unspecified error.