Re : generation - scanning frequency, voltage variation, save, measure

[gfds]

hello,

Please help me!

How can I make this program. Have you seen something similar?

I work with the card or USB 6251 and I do realize this program in LabView:
The objective is to develop a comprehensive purchasing system that enables the automatic characterization of piezoelectric transducers in the labview:
-Management-excitation of the transducer (scano geranator frequency 15-25kHz level change tension0-10V)
-Acquisition of electrical signals and then calculating the impedance of the actuator
-Identification of parameters of the model (equivalent circuit diagram, ...)
-Saving Data in a measurement file
-Measure the load impedance of the transducer during operation based on measurements of current and voltage across the transducer.

Best regards,
Marek

[BenjaminR]

Hi Marek,

Thanks for posting on National Instruments Forum. 

I think your question is too large... We're not here to implement your code but to help to do so. Feel free if you have any specific question during your development.

[gfds]

 Hey,

Thanks you Benjamin for your valuable attention.

I am working all the time at this project.  Generation with scanning i am already behind me. If someone could advise how to show a generated sinusoidal voltage in the process of changing frequency (15kHz-30kHz)? trying to do this using the DAQ Assistant in which it works not very. We must link the speed of sampling and number of samples from generated frequency by the generator? - I think so. Part two waveforms: voltage on the receiver and the additional resistor calculated later as current. With this, the current is very small. I need this two measurements for automatically calculate parameters of piezoelectrics materials. Frequency generator and measurements also do not agree.

Best regards,

Marek