Simulink subsystem with electric circuits?

Question

Kevin Bachovchin 2016-1-17

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https://ww2.mathworks.cn/matlabcentral/answers/264029-simulink-subsystem-with-electric-circuits

回答： Sebastian Castro 2016-1-18

Hello,

I know that it is possible in Simulink to have subsystems with some input and output where you have mathematical operations inside the subsystem. Is there a way to have a subsystem with an electric circuit rather than mathematical operations?

For example, say my subsystem is an RC (resistor, capacitor) circuit with a DC voltage source. Is there a way to have the value of the DC voltage source be an input to the subsystem and the resulting voltage across the resistor be an output of the subsystem? When I click on the voltage source block, in the resulting popup there is a parameter called “voltage”. Is there a way to set that voltage equal to the port input to the subsystem?

Thank you,

Kevin

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Answer 1

Sebastian Castro 2016-1-18

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https://ww2.mathworks.cn/matlabcentral/answers/264029-simulink-subsystem-with-electric-circuits#answer_206488

There is also a Controlled Voltage Source block, which is what you want to use.

Similarly, if you want to measure resistor voltage, you can place a Voltage Sensor across it.

Then, the same principles as in Simulink to create a subsystem hold. You can use the signals entering the voltage source/leaving the voltage sensor as subsystem interfaces.

- Sebastian