Convert pulses into sine. Simulink

Any idea how to convert pulses to sine wave in Simulink model? I'm having pulses which I get via PWM technique and now I want to convert it to sine, because I need to know is phase shifted by 120 degrees.

Here is my model:

Scope:

I need to get something like that:

[Hieu Dang]

Hi, my name's Vu , I need your help, can you send me your model ? Here's my email [e-mail]. Thank you very much for your help. I really appreciate that.

[migue pico]

Hi, I'm trying to do something similar. I need to convert the pulses generated by an optical sensor to a sinewave so that I can compare it to other sinewaves and find out the phase difference. Did you end up figuring out ? If so could you please let me know how ? This is my email, [e-mail] and Thanks in advance.

Answer 1

[Mathieu NOE]

hello

to convert PWM back to the input sinus , you simply have to put a low pass filter after the PWM signal

you can use a second or fourth order butterworth filter with a cut off frequency about 1/10th of the PWM carrier frequency

this is how it's "hardware" implemented in class D amplifiers (to remove the carrier and harmonics)