sim(simIn) gives error saying all the runs have an error

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Laxmi akshaya thela 2024-8-18

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https://ww2.mathworks.cn/matlabcentral/answers/2146099-sim-simin-gives-error-saying-all-the-runs-have-an-error

评论： Paul 2024-8-31

Error_message_2.PNG

% set_param('fl_name/Speed_sweep','Value','Spd') 
Spd = 100;
%% Speed Array
Speed = zeros(1,5001);
len = numel(Speed);
q=0;
for s = 1:len
        Speed(1,s) = q;
         q = q + (1/(len-1));
end
Trq_inst = zeros(1,401);
len_trq = numel(Trq_inst);
Trq_ref =1;
clear simIn
clear simOutputs
for t = 1:(len_trq) 
 
Trq_inst(1,t)= Trq_ref; 
for i = 1:len
simIn(i) = Simulink.SimulationInput('fl_name');    
simIn(i) = setBlockParameter(simIn(i),'fl_name/Speed_Sweep','Spd',Speed(i));
end
simOutputs = sim(simIn);
Trq_ref = Trq_ref - (1/(len_trq-1));
end

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Walter Roberson 2024-8-18

在 MATLAB Online 中打开

It won't make a difference to the error, but I would recommend rewriting the code to be something like

len = 5001;
Speed = linspace(0, 1, len);

with no q or for s loop. It would be neater and more compact.

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回答（1 个）

Walter Roberson 2024-8-18

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https://ww2.mathworks.cn/matlabcentral/answers/2146099-sim-simin-gives-error-saying-all-the-runs-have-an-error#answer_1500369

编辑：Walter Roberson 2024-8-18

在 MATLAB Online 中打开

simIn(i) = setBlockParameter(simIn(i), 'fl_name/Speed_Sweep', 'Spd', string(Speed(i)));

That is, block parameter values must (usually) be strings or character vectors.

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Walter Roberson 2024-8-31

@Paul

@Laxmi akshaya thela is using R2020b.

Paul 2024-8-31

Yes 2020b is indicated on this page. But as you've pointed out the CaptureErrors input is valid for 2020b, yet the error message in the attachment to this comment indicates that CaptureErrors is an invalid input to the sim command. OTOH, that attachment also shows the same command run from the command line three times in a row, and the third time results in a different error than the first, which is strange. Also, the error messages don't really look like typical error messages. Maybe the sim command is shadowed? Strange results ....

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