Process electrical signal to s-domain to be used for Transfer Function

[Chong]

Hi,

I have created a transfer function vi. I'd like to know how to convert electrical signal from LVDT or Geophone to signal in s-domain to apply to this TF vi and then convert the output of this TF back (called the control signal) to electrical signal again to drive actuator. Can anyone help? Thanks.

Best Regards,

Ivan

[Wallace_F]

Hello Ivan,

There is a VI that can transform your time domain LVDT or geophone signal into an S-domain input signal.  This VI is called the Laplace Transform Real VI, and it can be found in the signal processing toolkit. This VI is described as having the following inputs and outputs:

Inputs:

1.  X - the array of doubles data type for your evenly sampled time domain signal.

2.  end - the instant of time of the last sample.

Outputs:

1.  Laplace{X} - the result of the Laplace transform as an array.

2.  error - returns any error or warning from the VI.

Best wishes,

Wallace F.