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Filter coefficient

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Viewing 9 posts - 1 through 9 (of 9 total)
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  • November 23, 2012 at 9:52 am #8452
    HerveM1234HerveM1234
    Participant

    Hi,

    I’m trying to apply the following transfer function to FlexPro9 filter:

    G(s)= 43498.1684982
    ——————————————————————————–
    s2+213.553113553s+17857.1428571

    I do not really understand the way to apply these coefficient in the Filter formula. Filter(Signal,NumFilter,DenomFilter)
    Thanks for your help.

    rv

    November 23, 2012 at 9:52 am #12794
    HerveM1234HerveM1234
    Participant

    Hi,

    I’m trying to apply the following transfer function to FlexPro9 filter:

    G(s)= 43498.1684982
    ——————————————————————————–
    s2+213.553113553s+17857.1428571

    I do not really understand the way to apply these coefficient in the Filter formula. Filter(Signal,NumFilter,DenomFilter)
    Thanks for your help.

    rv

    November 26, 2012 at 9:34 am #9259
    Bernhard KantzBernhard Kantz
    Participant

    The coefficients to be fed into the Filter function are exactly the coefficients of the numerator / denominator polynom of the rational system function.
    To apply the filter from the question, use for example

    Dim b = { 43498.1684982, 0.0, 0.0 }
Dim a = { 17857.1428571, 213.553113553, 1.0 }

Filter(, b, a)
    November 28, 2012 at 3:07 pm #9261
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

    November 28, 2012 at 3:07 pm #9262
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

    November 28, 2012 at 3:07 pm #9263
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

    November 28, 2012 at 3:07 pm #9264
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

    November 28, 2012 at 3:07 pm #9265
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

    November 28, 2012 at 3:07 pm #9266
    HerveM1234HerveM1234
    Participant

    Thanks for your reply,
    but it doesn’t work.
    In the transfer function given in example : ‘s’ is the continuous Laplace variable isn’t it ?

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