Hi. when i am trying to Controlling Robot Motion in Simulink, getting following error. please suggest about it. thank you.

Error in S-function 'MobileRobotSimulink1/Robot Simulator/Soft Real Time': S-Function 'sfun_time' does not exist

Component:Simulink | Category:Block error

[Dinesh Sequeira]

I have the same error. It would be nice if someone from Matlab/Simulink can reply with a solution.BTW this is from the video " Student Competition :Mobile Robotics Training ,Part 1 :Controlling Robot Motion by Connell D'Souza

The error seems ti come from the Robot Simulator block in the Mobile Robotics Training library

Thanks

Dinesh

[Adedotun Owojori]

It seems I am getting the same error, we look forward to your explanation in getting the system work

Thanks

Dotun

[Adedotun Owojori]

Please i am still getting this error after deleting the soft realtime block

• The "FixedStepDiscrete" solver cannot be used to simulate block diagram 'untitledfcn' because it contains continuous states

Component:Simulink | Category:Block diagram error

and also after converting to a variable solver, i got this error

• Error in 'untitledfcn/Robot Simulator': Initialization commands cannot be evaluated.

Caused by:

• Changing property 'SolverType' is not allowed

Component:Simulink | Category:Block error

kindly assist, thanks

Dotun

Answer 1

[MathWorks Student Competitions Team]

This error usually occurs when you don't run the file "installMRTToolbox" included in the training files. This should be on the main directory for the submission here:

https://www.mathworks.com/matlabcentral/fileexchange/62966-student-competition-mobile-robotics-training

You will need a compiler to compile the s-funciton for the block and then everything should work. This is prompted when the install file is executed.

Alternatively, if you are using MATLAB R2018a or newer you can delete the block form the library and use Simulation pacing instead. To do this:

1. Right-click the Robot Simulator and select Library Link>Go to library block
2. Unlock the library by clicking the lock on the bottom left corner
3. Right-click the Robot Simulator block in the library and select Mask>Look under mask
4. Delete the "Soft Real Time" block
5. Save the library

You can enable Simulation Pacing from the run button. This will slow down the simulation to real-time speed.

Find here more details on simulation pacing:

https://www.mathworks.com/help/simulink/ug/simulation-pacing.html

[Yash Mange]

Thanks!

Worked for me

[Ibrahim sabbah]

Thanks! works for me too, i delete "Soft Real Time" and everything gine now.

[Steven Perez-Badillo]

Worked for me too!

[Lyzette Vázquez Gaona]

disculpe, donde tengo que eliminar el bloque de "Soft Real Time"?

[Jose Avendano Arbelaez]

Adentro de el bloque "Robot Simulator". Para que la solucion sea permanente, debes editar la libreria donde se encuentra el bloque. Se puede abrir la libreria con este comando:

>>open_system('mobileRoboticsTrainingLib')

[Adedotun Owojori]

Please i am still getting this error after deleting the soft realtime block

• The "FixedStepDiscrete" solver cannot be used to simulate block diagram 'untitledfcn' because it contains continuous states

Component:Simulink | Category:Block diagram error

and also after converting to a variable solver, i got this error

• Error in 'untitledfcn/Robot Simulator': Initialization commands cannot be evaluated.

Caused by:

• Changing property 'SolverType' is not allowed

Component:Simulink | Category:Block error

kindly assist, thanks

Dotun