Notch filter (band-stop filter)

The notch filter is designed as a narrow-band filter for the attenuation of resonance frequencies. Select a servo drive (1) in the TwinCAT System Manager, start the TCDriveManager (2), click on the respective axis (3) and select the "Current command value filter" (4).

A maximum of four filters are evaluated, which can be parameterised independently of one another. In area (6), activate the filter that you would like to occupy with the notch filter. The cycle time of the velocity controller is indicated in field (7). The "QMath Factor" (8) determines the scaling of the filter input parameter. With the current filter implementation the maximum possible resolution is achieved with the default value "30".

Now select "Notch filter" (5) from the drop-down menu.