Setting initial condition of simulink integrator through code

Hi,

I am trying to cchange the initial condition of an integrator in Simulink by using Matlab code. I am using the following lines:

init_cond_integrator=[pi/3;0];

set_param('ClosedLoop_PID_MRFT_with_actuator/Manipulator Dynamics/Integrator1','InitialCondition',num2str(init_cond_integrator));

It gives the following error:

'ClosedLoop_PID_MRFT_with_actuator/Manipulator Dynamics/Integrator1' has unapplied changes. Please apply or cancel these changes before running the simulation.

Any help will be highly appreciated.

Thanks!

Answer 1

[Fangjun Jiang]

The error message says you have the dialog window open and changes have not been applied. Click apply or Ok and then proceed.

[Ahmed Rehan]

Thanks much, but still the problem was still there with another error of invalid setting.. Though I have solved it using external initial condition option in the integrator. I have connected constant blocks with the external port and I set those constants using set_param in the code.

[Fangjun Jiang]

Most likely, the value needs to be [1.0472; 0], not as shown 1.0472 0

[Ahmed Rehan]

Yes, right, but that seems undoable using the set_param command.

[Fangjun Jiang]

set_param(Block,'InitialCondition',mat2str([1,2]))