system identification for power converter

[preet_singh]

Dear All,

            i am working on system identification  for the buck converter . for this i generated variable duty cycle with 20KHz switching frequency on analog output AO1 of usb 6221, now i want to introduce perturbation PRBS in steady state. now my problem is to add perturbation on analog output. please suggest me how to do this on analog output.

thanks

with regards

gurpreet singh

[Sujo]

Do you want to mix some signal to your PWM signals? You can use normal add function to add your AO PWM signals with the PBRS perturbation signal.