how to pass variables from simulink to workspace,when simulink has been paused from MATLAB Script

I am running two simulink model from matlab script(with "sim" command),,now i want to pause the running simulink model in the middle and send the data from "to workspace block" to my matlab workspace at the time wen i paused it,,,,,actually my requirmnet is meeting if i directly run my simulink model from simulnk start pause button,,,but its not working through script

and if i run with ("sim"command)simulink blocks values are saving to worksapce,,and if i run with ("start ,simulation command"),,my simulink variables are not saving to workspace

help me out,,if anyone know abt this

I am running the simulink model with a script file I am taking a for loop, after 1 cycle value model runs but in next cycle value it deleted the old value. figure I can use using 'hold on' but how to store and retain old array?

Start a new question thread Tulika Roy

Answer 1

Use

 set_param('Yourmodel','Simulationcommand','start')

and your data will be saved to workspace

Maybe you should close a loop then start another loop, I did'nt try it (I have'nt Matlab where I am).

ya i do feel the same but it will lenthier

What is 'lenthier' ?

I mean to say i have to write for loop again

Arun, I tested your problem in a loop, and it worked, the initial value of the unit delay don't change when you pause simulation. I don't know why it don't work for you.

Answer 2

@Arun, I hope that you don't have any strange varsion of matlab (like Matlab R. Strange).

sim() command will not return till simulation is completed, so off-course your script will never go ahead to execute other commands like pause.

And, see below snap. When I run and pause the model from script using SimulationCommand, then To Workspace block output is saved in workspace. It should work for you also.

these commands i have inside a for loop,,,

Arun, can you post your code

for i=1:1:25

   set_param('course_speed_position', 'Simulationcommand', 'start')
   set_param('course_speed_position1', 'Simulationcommand', 'start')      

   set_param('course_speed_position','StopTime', sprintf('%d',i));
   set_param('course_speed_position1','StopTime',sprintf('%d',i));   
    pause(0.5) 

   set_param('course_speed_position', 'Simulationcommand', 'pause')
   set_param('course_speed_position1', 'Simulationcommand', 'pause')  

   pause(0.5)

   set_param('course_speed_position', 'Simulationcommand', 'continue')
   set_param('course_speed_position1', 'Simulationcommand', 'continue')  

   assignin('base', 'x_F', x_F); 
   assignin('base', 'y_F', y_F); 
   assignin('base', 'x_T', x_T); 
   assignin('base', 'y_T', y_T);
   assignin('base', 'course_F', course_F);
   assignin('base', 'speed_F', speed_F);
   assignin('base', 'course_T', course_T);
   assignin('base', 'speed_T', speed_T);

   figure(5)
   plot(x_F,y_F,'r*',x_T,y_T,'r*') 
   [columns,rows] =  size(x_F)
   assignin('base', 'columns', columns);
   assignin('base', 'rows',rows);

this is wat am doing,,but its not saving to workspace,,

for i=1:1:25

   set_param('course_speed_position','StopTime', sprintf('%d',i));
   set_param('course_speed_position1','StopTime',sprintf('%d',i));   
%     pause(0.5)
%  Execute the model which we have opened in the above command
   options = simset('SrcWorkspace','current');

   simOut = sim('C:\Documents and Settings\admin\Desktop\New Folder (5)\02_12_2012(Simulink blocks)\Resolved Models\Speed+Position+Course\course_speed_position.mdl');
   simOut1 = sim('C:\Documents and Settings\admin\Desktop\Trial Testing\course_speed_position1.mdl');

   %plotting of Firing and Target platform in a single plot

   %asssign these values on workspace to see the data
   assignin('base', 'x_F', x_F); 
   assignin('base', 'y_F', y_F); 
   assignin('base', 'x_T', x_T); 
   assignin('base', 'y_T', y_T);
   assignin('base', 'course_F', course_F);
   assignin('base', 'speed_F', speed_F);
   assignin('base', 'course_T', course_T);
   assignin('base', 'speed_T', speed_T);

   figure(5)
   plot(x_F,y_F,'r*',x_T,y_T,'r*') 
   [columns,rows] =  size(x_F)
   assignin('base', 'columns', columns);
   assignin('base', 'rows',rows);
   end 

end

this is the secod way am trying out

In your code, you are starting the simulation and then setting the stop time. I don't think this is proper way of simulating model.

Ok...One more try....

Can you explain what you are trying to do i simple words, so anyone here can suggest something.

but it simulates nicely,without error

Mr TAB My Strange MATLAB works propely ,,and it will not send values back to workspace until for loop will finish

If you want to set stop time, do it before start sim or after pause sim. It does'nt make sens to do it after start sim. Other thing, are you sur you are runing your model from m file, if yes, why are you then, using assignin command?

for i=1:1:500    
   set_param('course_speed_position','StopTime', sprintf('%d',i));
   set_param('course_speed_position1','StopTime',sprintf('%d',i));   
   %    pause(0.5)
   %  Execute the model which we have opened in the above command
   simOut = sim('C:\Documents and Settings\admin\Desktop\New Folder (5)\02_12_2012(Simulink blocks)\Resolved Models\Speed+Position+Course\course_speed_position.mdl');
   simOut1 = sim('C:\Documents and Settings\admin\Desktop\Trial Testing\course_speed_position1.mdl');
   options = simset('SrcWorkspace','current');
   %plotting of Firing and Target platform in a single plot
   %asssign these values on workspace to see the data
   assignin('base', 'x_F', x_F); 
   assignin('base', 'y_F', y_F); 
   assignin('base', 'x_T', x_T); 
   assignin('base', 'y_T', y_T);
   assignin('base', 'course_F', course_F);
   assignin('base', 'speed_F', speed_F);
   assignin('base', 'course_T', course_T);
   assignin('base', 'speed_T', speed_T);

     figure(5)
     plot(x_F,y_F,'r*',x_T,y_T,'r*') 

     [columns,rows] =  size(x_F)
     assignin('base', 'columns', columns);
     assignin('base', 'rows',rows);

     rto = get_param(gcb,'RuntimeObject')
     % RTOO= rto.OutputPort.Data
     end 

assignin am using to plot it and to put in to base workspace,,so that my other simulink model can access the data which are available from these models output

Wouldn't you want to stop at time i+1 rather than i ?

Arun, If speed_F is the output of another simulink model, that means that this variable is already in workspace, if not, then just use to workspace block

no actually these value in workspace i get wen i stop the model,,rather i want to get the data of workspace,when i pause the simulation

I do'nt understand. Even you pause your simulation, your data will be in workspace.

I am controlling my simulink models in a for loop from matlab script,,so wen i pause the from script,,,its reall not giving values back to workspace,,,,,

HELLO Mr TAB,,,in your screenshot You have added a breakpoint so u r getting the values to workspace,,,