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bmulyanto1-Visitor
1-Visitor
December 12, 2020
Solved

Formulate a transfer function symbolically from a set of equations from KCL and KVL

  • December 12, 2020
  • 5 replies
  • 2797 views

Hi,

 

I would like to get the transfer function from a set of equations that I got from KCL and KVL.

I am not sure how to do it in Mathcad (Prime 5).

From here, this is what I tried.

bmulyanto_0-1607740265674.png

EDIT:

sorry for the edit. I should have just gone to sleep yesterday...and mine is Prime 4.

bmulyanto_0-1607798744188.png

 

 

Best answer by Werner_E

You have three equations so you should solve for three variables.

I am not sure what exactly you are looking for - could it be something like this:

Werner_E_1-1607793017243.png

Worksheet in Prime 5 format attached.

 

 

5 replies

V
ValeryOchkov24-Ruby IV
24-Ruby IV
December 12, 2020

May be so:

tr-fun.png

B
bmulyanto1-VisitorAuthor
1-Visitor
December 12, 2020

Hi,

sorry I was not clear.

i1 and vx should be eliminated.

 

EDIT: I added vx

 

W
Werner_E25-Diamond IAnswer
25-Diamond I
December 12, 2020

You have three equations so you should solve for three variables.

I am not sure what exactly you are looking for - could it be something like this:

Werner_E_1-1607793017243.png

Worksheet in Prime 5 format attached.

 

 

    B
    bmulyanto1-VisitorAuthor
    1-Visitor
    December 12, 2020

    Hi,

    Thanks. I got it closer.

    bmulyanto_0-1607801304461.png

    Is there a way to make the numerator into the form like what I posted in my EDIT?

    W
    Werner_E25-Diamond I
    25-Diamond I
    December 12, 2020

    Is there a way to make the numerator into the form like what I posted in my EDIT?

    I don't think so. We have very few possibilities to influence the representation of the result of symbolic evaluations in Prime.

    You may try to play around with the few keywords we have at hand, but I don't think that you will succeed

    Werner_E_0-1607799317102.png

     

     

    Instead of "collect, v.x" you should rather use "simplify" to let Prime cancel v.x

    "factor" alone will also do this job as it applies implicit simplification.

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