Notch

Notch 1:

Implementation of a band-stop filter with narrow bandwidth.

The documentation of the corresponding PLC function block can be found here: FB_FTR_Notch

The documentation of the TwinCAT 3 Filter PLC library can be found here: Overview

Configuration parameters

  • SamplingRate: sampling rate fs in Hz (greater than zero).
  • NotchFrequency: notch frequency in Hz (greater than 0 and less than SamplingRate/2).
  • Q: Q-factor = notch frequency/bandwidth (greater than zero).
  • Initial Values (optional): initial values define the internal state of the filter.

Output values