Setting initial condition of simulink integrator through code

2020 7 21
1 个回答
更新时间：2020 7 24
18 次查看（30 天）

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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!

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回答（1 个）

Fangjun Jiang
Fangjun Jiang 2020-7-21

0 个投票

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

4 个评论
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Ahmed Rehan
Ahmed Rehan 2020-7-22
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
Fangjun Jiang 2020-7-22
编辑：Fangjun Jiang 2020-7-22
Most likely, the value needs to be [1.0472; 0], not as shown 1.0472 0
Ahmed Rehan
Ahmed Rehan 2020-7-24
Yes, right, but that seems undoable using the set_param command.
Fangjun Jiang
Fangjun Jiang 2020-7-24
set_param(Block,'InitialCondition',mat2str([1,2]))

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