how to obtain transfer function as equations

[karthi_286]

Hello,

Can anyone please help me in getting the transfer function as equation in Labview 2010.

I have with me the input and output as time domain curve.I have FFTéd thé input and output and divided the output by input, thus obtained the magnitude and phase of the signal.

After this,I need to obtain the transfer funcion as equation.

Thanks,

Karthick 

[Stephan_D]

Hey Karthick,

as far as I know, LabVIEW itself doesn't provide a build in function to get the transfer function as equation.

This is possible with the Control Design and Simulation Toolkit for LabVIEW according to this page:

Frequency Response for Control Systems - National Instruments
http://www.ni.com/example/6450/en/ 

Figure 1 shows the construction of the trasfer function which is also displayed on the front panel on figure 2.

Regards, Stephan

[karthi_286]

Hello,

Thank you for the reply,but how to find the values to be entered in the numerator and denominator of the transfer function as shown in figure 1?

Regards,

Karthick