How does one create a DC transfer characteristic in Simscape?

This is straightforward in real circuit simulators.

[Manan Mishra]

I am not exactly sure what you mean by "creating DC transfer characteristic in Simscape". Can you please elaborate a bit more on the desired requirement?

Any example or schematic diagram would also be helpful.

[Dan Herbison]

See my comment, which was entered as an "answer" to my own question. Sorry for misplacing it.

[Manan Mishra]

Thanks for your humble answer Dan.

However, I was more interested in knowing what sort of use case you have for such a requirement in Simscape. Since Simscape is used for modelling physical components and systems, I wanted to know the workflow you are following.

I guessed that it would be possible to do this without using Simscape and simply with Simulink blocks.

[Dan Herbison]

I am trying to build an op amp based active filter, using Simscape resistors, capacitors, electrical voltage sources, connected in a schematic format. That is what Simscape is for, isn't it?

And, I want to know what the DC Transfer Characteristic for this filter is, i.e. as I vary the DC level of the input source, what does the DC level of the output do?

As I have said, this is very easy to do in Spice or other circuit simulators, but I don't see how to do this using Simscape.

[Manan Mishra]

Thank you for that clarification. This gives better information about the requirement than mentioned in the original question.

You can refer the following link and see if this helps:

Transfer Function of a simple Circuit using Simulink

[Dan Herbison]

Sigh...... You still do not understand what a DC Transfer characteristic is.

Can I be put in touch with a professional?

Answer 1

[Dan Herbison]

I'm not so sure I want an answer from someone who needs tutorial on what a DC transfer characteristic is...... But, in any case...

"The transfer characteristics of a system is defined to be the pseudo-static relationship between the input and output variable. If the system is a voltage-in, voltage-out system we would term this pseudo-static relationship the dc transfer characteristics."

In other words, it is the trajectory mapped out by the system outputs if the input(s) are swept over their intended range of operation. Conceptually, one would set an input to some valid value, let the system settle to its quiescent point, record the quiescent output, then move to another input value.

The plot of the curve with the output on the vertical axis and the input on the horizontal would be the "DC transfer characteristic".

Simscape is a MathWorks product.

I suggest you read

http://class.ece.iastate.edu/ee230/Support/Transfer%20Functions%20and%20Transfer%20Characteristics.pdf