Discrete Total Harmonic Distortion
Purpose
Calculate total harmonic distortion (THD) of input signal
Library
Control / Discrete
Description
This block calculates the total harmonic distortion of a periodic input signal based on discrete samples. The sample time and the number of samples can be specified. The THD is defined as:
where is the RMS value of the
th harmonic of the input signal and
is
its overall RMS value. The fundamental frequency
of the running window is
Note In Simulink this block is only available for MATLAB 7.0 or newer.
Parameters
- Sample time
- The time interval between samples. See also the Discrete-Periodic sample time type in section Sample Times.
- Number of samples
- The number of samples used to calculate the THD.