inverse of tranfer function

[peekay]

Hi

            I intend to generate drive signal from a SI model transfer funtion. and to do this i have get the inverse of of the transfer function identified by SI. Pl suggest which VI in labview can do this. Is there a way to do this or one need to devlop a algorithm for this.

Paul

[jamrite]

Hi Paul,

There doesn't seem to be a VI that does inverse tranforms directly. I will try and find out if there is one.

Jaidev Amrite

National Instruments

[jamrite]

Hi Paul,

I took a better look at the examples and here is what I noticed:

Transfer functions are specified in the transform (frequency) domain but signals (time domain) are directly wired to the transfer function blocks. This means that the signal is implicitly transformed at the input and the output of the function block. Now, to apply the transfer function, you need to sample the time domain signal over a descrete interval and this is specified in the timing controls of the simulation loop.

You can look at the context help for the transfer function VI for further clarification. Note that even though the transfer function is specified as a function of 's', the inputs and outputs are a function of 'k', which if I am not mistaken, signifies descrete intervals of time.

Hope this helps.

Thank you,

Jaidev Amrite

National Instruments