How to insert in Simulink a linear system with internal delays?

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Kleberson Lima 2016-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/301371-how-to-insert-in-simulink-a-linear-system-with-internal-delays

评论： Kleberson Lima 2016-8-30

Dears,

I have do simulate in simulink a system with internal delay, for example G(s)= a(s)/(b(s)*exp(-tau*s)+c(s)), is it possible in simulink? Like by command line? Without pade approximation.

I've tried some trick with blocks (feedback, parallel etc..) but it did not work.

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Answer 1

Swarooph 2016-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/301371-how-to-insert-in-simulink-a-linear-system-with-internal-delays#answer_233175

You can create a transfer function or state space model in MATLAB using the control system toolbox. Then import that into Simulink using the LTI System block. The workflow is explained here .

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Kleberson Lima 2016-8-30

I've already tried this way. But my system (fourth order) looks like G(s)=(s+1)/((s+1)+(s+2)*exp(-s)). The LTI system works in command line (because, intrisically, the system is made an state space models) however doesn't in simulink (there's an error like "more zeros than poles").

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