Sine wave frequency and amplitude detection

[Floyd He]

Hellow everybody;

I generated a sine wave in the control and simulation loop. Its frequency and amplitude may be changing along the simulation time.

I would like to contineously detect its amplitude and frequency information during the simulation, so I can observe their changes.

The VIs I used are "extract single tone information"VI and "peak detection"VI. Both of them could work but they only output the freq and amp value when the simulation finished, which means I am not able to obtain their information during the simulation.

Could anybody help me with this problem? I have posted a simple programme shows my problem and also a snapshot of it. Really appreciated if someone could offer me a help. Many thanks!

BR

Floyd 

[TBLabGuy]

So each time your control and simulation loop runs through it returns your frequency and amplitude.

Why not throw the entire control and sim loop inside a while loop. That way its constantly running through that inner loop.