ADLINK PCI-8258 - Manual (Page 99)

Motion Control Theory 85
PCI-8254 / PCI-8258
4.2.4 Filter
A filter is designed to pass signal of certain band and attenuate all
signals outside of this band. This controller supports two general
purpose Biquad filter for each axis as shown in Figure 4-6 while
the table below indicates corresponding axis parameters against
biquad filter. Mathematical formula for biquad filter is shown below
Here and is the input and output of biquad filter 0,
and and is the input and output of biquad filter 1.
Commonly available filters are low pass filter and notch filter and
will be reviewed in later sections. You may design filters of
combinations of various coefficients to meet requirements of
different signal processings.
) (k R ) (k X
) (k Y ) (k R