Accessing workspace variables with parallel workers

29 次查看（过去 30 天）
George
George 2024-11-11，20:42
回答： Paul 2024-11-12，0:03
I have a simulink model that I would like to run a number of times over a range of 2 different variables. In my simulink model I was using model callbacks to take the 2 random initial variables and calculate the initial conditions to some of my integrators but this wasn't working and now I am doing this in the for loops. However when I run the simulation it throws an error saying "Warning: Error in the simulation was caused by missing variable 'q_e2b0'. Set "TransferBaseWorkspaceVariables" option to "on" to fix the issue." I tried setting that in setModelParameters but that doesn't work either.
Below is a pseduo code of my script:
num_sims = length(phi_range)*length(theta_range);
simIn(1:num_sims) = Simulink.SimulationInput('SixDOFSimulink');
sim_itr = 1;
for i = 1:length(phi_range)
for j = 1:length(theta_range)
phi0 = phi_range(i);
theta0 = theta_range(j);
% do calculations %
pos0 = %value%
v_b0 = %value%
w0 = %value%
q_e2b_0 = %value%
simIn(sim_itr) = simIn(sim_itr).setModelParameter('SimulationMode', 'normal', ...
'SaveTime', 'on', ...
'SaveOutput', 'on');
simIn(sim_itr) = simIn(sim_itr).setVariable('theta0', theta0, 'workspace', 'SixDOFSimulink');
simIn(sim_itr) = simIn(sim_itr).setVariable('phi0', phi0, 'workspace', 'SixDOFSimunlink');
simIn(sim_itr) = simIn(sim_itr).setVariable('q_e2b0', q_e2b0, 'workspace', 'SixDOFSimunlink');
simIn(sim_itr) = simIn(sim_itr).setVariable('v_b0', v_b0, 'workspace', 'SixDOFSimunlink');
simIn(sim_itr) = simIn(sim_itr).setVariable('pos0', pos0, 'workspace', 'SixDOFSimunlink');
simIn(sim_itr) = simIn(sim_itr).setVariable('w0', w0, 'workspace', 'SixDOFSimunlink');
sim_itr = sim_itr+1;
end
end
out = parsim(simIn, 'ShowProgress', 'on');
delete(gcp('nocreate'))
  2 个评论
Paul
Paul 2024-11-11，22:28
Is the variable q_e2b_0 as specified prior to the simIn assignments, or is it q_e2b0 (w/o the second underbar) as in the third simIn assignment, (both for the variable name and the value)?
George
George 2024-11-11，22:54
I did not notice that typo, but just to make sure, I included both of them in the setVariable definition, but this did not help. I still get this error. "Warning: Error in the simulation was caused by missing variable 'q_e2b0'. Set "TransferBaseWorkspaceVariables" option to "on" to fix the issue."
I tried adding TransferBaseWorkspaceVariables to the setModelParameters, but then I get this error from the output of each run: block_diagram does not have a parameter named 'TransferBaseWorkspaceVariables'

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Paul
Paul 2024-11-12，0:03
It sounds like q_e2b0 is supposed to be a base workspace variable that's not really a variable that's used in the simulation, like as a block parameter. Maybe q_e2b0 is used in an InitFcn callback or something similar (I'm only assuming that variables used an InitFcn don't get applied via setVariable).
Anyway, the TransferBaseWorkspaceVariables is a name/value directive in the parsim command, though the linked doc page suggests there might be better alternatives. And, of course, make sure the variable with the correct name is defined in the base workspace to be transferred.

类别

在 Help Center 和 File Exchange 中查找有关 Simulink Functions 的更多信息

标签

产品


版本

R2024a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by