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Input ports (1, Action) If Action Subsystem' are involved in the loop?

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Adit on 20 Aug 2019
Answered: Divya Yerraguntla on 25 Sep 2019
I am trying to simulate a closed loop cooling system using simulink but facing this error continously.
If anyone can help me with this would be of great help?
I have uploded the file,if anyone can please run it and share the trouble shooting measures willbe of greta help.
I ahve uploded the mat variable file for initialization parameters of the model


Murugan C
Murugan C on 21 Aug 2019
I couldn't able to open the model. Because you designed in Simulink 2017a, So can you please upload 2016b simulink model or below version.

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Answers (1)

Divya Yerraguntla
Divya Yerraguntla on 25 Sep 2019
Hi Adit,
I could see an algebraic loop formed in your model by the signal coming to Total_pressure_BP input of Pump 1 subsystem. This is actually causing the issue. Try adding a Unit Delay block to the signal coming to Total_pressure_BP block.
For more information about identification and removal of algebraic loops have a look at these links:
Also in order to solve algebraic loops in models containing continuous blocks you could go through this link:
Hope it helps!


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