Labview, Change the phase between 2 signals dynamically

[MaxLamb]

Hello,

I'm working on a big VI , and for testing my VI I have some controls.  A part of my VI is to generate 2 sine signals with the same amplitude and frequency and a phase difference between thoses 2 signals.

My example is quite simple but very similar the one I use :

- I can change frequency and amplitude while the VI is running.

- I can't change the phase.

Anyone have an idea ?

thank in advance 😉

[simyfren]

HI,

I looked in help and there is written: "Phase (deg)—Initial phase in degrees of the waveform. The default is 0. "

So, I think that you are able to set phase only before VI's start.

Simyfren

[MaxLamb]

Hi,

Thank you for your rapidity, I had only look with the CTRL+H view  ..

Do you have an idea for increase this value during the run ?

I have tried sinewave generator but it work like the "simulate signal" ..

[simyfren]

Try to use block "Sine".

Here is small example:

Hope this helps!

Simyfren

[MaxLamb]

Hi Simyfren,

I have try your solution but it doesn't give anything usable for me..

I have also tested a lot of stuff but nothing comes good.

If anyone have an idea, he's welcome 🙂

Max

[Danl_B]

Max,

When you say nothing useful, do you mean the VI did not run? Or, do you mean it runs but does not behave the way you want it to?

Dan

[MaxLamb]

Hi Danl_B,

My VI run, but I haven't a sine at my output. if I use a graph chart I can see a sine (not really good in résolution, it's more like a triangle) .

And if I set this signal for my DAQ analog Output and after that Acquiring with an other DAQ, it doesn't show me a sine but a square with strange change of amplitude.

I hope you can understand what I mean, my english is poor..

Max

[MaxLamb · Accepted solution]

I have find the solution :

I have set the input "reset signal" of Simulate_signal.vi with a constant TRUE. And with that it works fine ! 

Sorry for being a noob 😉

Hope this will help someone else.