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TMS320F28035: Inquiry about the Calculation of root mean square Values for AD Port Sampling

liujun
Intellectual 310 points

Part Number: TMS320F28035

Tool/software:

After passing through the operational amplifier, the three-phase AC power is input to the three analog sampling IO pins of F28035. The ADC uses a 20K PWM trigger. How can the root mean square value of the AC power be calculated from the collected AD value?

Thank you!