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Editing CSFUNC, not working without C,D matrices

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reen2015
reen2015 2011-10-28
I am trying to implement a continious function using S function, i tried editing csfunc file in toolbox/simulink/blocks
but the file is not working without C and D matrix . I have only A and B matrices of the system and i need to calculate dx/dt=Ax+Bu
As output i need the state vector x
I am learning to implement Sfunction and will highly appreciate your help,Thank you,Have a nice day
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Kaustubha Govind
Kaustubha Govind 2011-10-28
Please explain what you mean by "the file is not working without C and D matrix"? Have you eliminated all uses of 'C' and 'D'? What error/incorrect behavior do you see?

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采纳的回答

Omur
Omur 2011-11-21
C and D matrices are necessary in a state-space representation, you cannot skip them. But they are easy to find.
As you said, your output is your state vector. So this makes C = identity matrix the size of your state vector and D=0.

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reen2015
reen2015 2011-11-30
Thank u kastubha and omur. i got it correct.

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