How to restart the simulation from the last of the previous stopped time

I would like to connect and proceed after the simulation is completely stopped. Is there a way to save the last state in memory when it is stopped and retrieve and connect that information to proceed?

In my situation, I run a model over 10 hours and then adjust some parameters and re-run the simulation from the time that I stopped. If I run the simulation from the start again, it would be a very wasteful time.

Answer 1

[MathWorks Support Team]

You can use Simulink.op.ModelOperatingPoint to save model operating point in simulation as below.

fuelsys

set_param('fuelsys','SaveFinalState','on','FinalStateName',...

'myOperPoint','SaveOperatingPoint','on');

simOut = sim('fuelsys','StopTime','2')

myOperPoint = simOut.myOperPoint

Then, you can start the simulation at the stopped time of 2 seconds by specifying the initial state using the above saved Simluik.op.ModelOperatingPoint object as below.

set_param('fuelsys','LoadInitialState','on','InitialState',...

'myOperPoint');

myOperPoint = simOut.myOperPoint

Now you can see the simulation operate from that time as shown in the captured image below.

Note: The attached recording file(UI_Iteractive_way.mp4) is to show how to save and restore operating point through UI interactive.

 

You can find more information about using model operating point at the following links.

 

- Use Model Operating Point for Faster Simulation Workflow

https://www.mathworks.com/help/releases/R2022b/simulink/ug/model-operating-point-for-faster-simulation.html

 

- Simulink.op.ModelOperatingPoint

https://www.mathworks.com/help/releases/R2022b/simulink/slref/simulink.op.modeloperatingpoint.html

 

- Specify Initial State for Simulation

https://www.mathworks.com/help/releases/R2022b/simulink/ug/initial-state-operating-point-resume-simulation.html