How to export data from simulink

Hi

Im trying to export data from my simulink i created an M-file that use For loops and set_param command to configure different setting such as different KM different resistance for fault ... etc then run Simulink and get data as this M-file uses for loop my first concern is overwriting data and by it i mean losing some data ? would this happen ? considering that i use several out block that fill yout parameter , do you gusy have some idea or suggestion for this ?? is there any that i can gather data from my simulink model without configuring and ruining by manual for several times ??

thanks

Answer 1

[Nihar Deodhar]

This could be done by simply setting the output of simulation to be a vector.

set the max number of simulation s to be performed (i).

    model = 'type_model_name_here';
    load_system(model);
    i = 100; % say you have 100 simulation runs
    simout_a(i)  = Simulink.SimulationOutput;

    for j=1:i
            set_param([model '/Constant1'], 'Value', num2str(var(j)));
            set_param([model '/Constant2'], 'Value', num2str(var(j)^2));
            set_param([model '/Constant3'], 'Value', num2str(var_2(j)));
            simout_a(j) = sim(model, 'SimulationMode', 'normal');
    end

When you need output for Nth simulation, just index simout(N).time or simout(N).datalog

Answer 2

[HamidReza Saleh]

Do you have any idea how to do this ?? as you can see there is a lot of parameter and three table in one what is you're suggestion ??

[Nihar Deodhar]

There could be several ways to access the output. First of all I would like to know the format in which you get output for a single simulation. Is it just tout and yout as timeseries, or is it a set of arrays of the form structure with time? The data extraction process will be different in each case. I have provided a code snippet below for the case when output is taken as 'structure with time'.

Lets say you have the variable names in your simulink model that you mentioned above.

for k = 1:100

fault_inception_angle_temp = simout_a(k).get('fault_inception_angle');

fault_inception_angle(k,:) = fault_inception_angle_temp.signals.values;

end

and so on for different variables. If you have a different output type, like timeseries or some other structure, then the code could be slightly modified to extract/process the output for each simulation.

[HamidReza Saleh]

Thank you

[HamidReza Saleh]

I used the command simulation works fantastic but the results is in a parameter titled simout_a , how do i get parameter yout which should contain result of each time simulation ?

[Nihar Deodhar]

if you want to see the output for simulation 1,

simout_a(1).get('yout').signals.values

the above command will give you the output.

[HamidReza Saleh]

it just replies this error :

Struct contents reference from a non-struct array object.

[Nihar Deodhar]

There might be something else going on with the way you are logging your data. I save it as 'Structure with time' for which case the above code literally works fine. Here is a snapshot of what I mean. There is an option to set the format.

[HamidReza Saleh]

i configure my simulation but still doesn't work here is my code please check it

model = 'PrPUPFCSVM2'; load_system(model);

% initialize fault type i = 11; % 10 faults and normal state

for j = 1:i

                % Set fault type
                % Altogether 10 types: AG, BG, CG, AB, BC, AC, ABG, ACG, BCG, ABCG
                faultType = j;
                %1 == AG 
                if faultType == 1
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 2
                %2 == BG 
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 3 
                %3 == CG
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 4          
                %4 == AB
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',0);
                elseif faultType == 5      
                %5 == BC
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',0);
                elseif faultType == 6    
                %6 == AC
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',0);
                elseif faultType == 7            
                %7 == ABG
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 8            
                %8 == ACG
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 9            
                %9 == BCG
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 10            
                %10 == ABCG
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',1);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',1);
                elseif faultType == 11            
                %11 == No Fault
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultA',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultB',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','FaultC',0);
                    set_param('PrPUPFCSVM2/Three-Phase Fault','GroundFault',0);
                    simout_a(j) = sim(model, 'SimulationMode', 'normal');

                end
end

[Nihar Deodhar]

First off I did not see a line at the beginning that say something like:

simout_a(i) = Simulink.SimulationOutput;

Ok, lets say you have it somewhere (because you have to initialize the output array).

Furthermore, You are adding output to simout_a only in one case (j=11). Doing this will only give you one simout_a(11) struct with contents and the others will be empty. So I think what you intend to have is the sim command outside of if-else statement. Aslo, if-else statement chain should have the last 'else condition' not an 'elseif'. This is not a thumb rule, but just wanted to add the last point.

[HamidReza Saleh]

Thanks