1st and 2nd order IIR filter – Infinite Impulse Response Filter

A general digital filter with time-discrete transfer function has been implemented for the current command value filter.

The following filters can be selected in the TCDriveManager:

• Notch filter
• Phase correction filter 1^st order (PD T1 or lead lag)
• Low-pass filter 1^st order (PT1)
• Phase correction filter 2^nd order (Bi Quad)
• Low-pass filter 2^nd order (PT2)

The coefficients b₀, b₁, b₂, and a₁, a₂ determine the characteristic of all the filters described and can also be directly specified.