A control system including a filter module generates a filtered
disturbance signal based on a disturbance signal and a transfer function
of the filter module. A set point adjustment module generates an adjusted
set point signal based on a set point signal and the filtered disturbance
signal. A servo control module generates an error signal based on the
adjusted set point signal and a position feedback signal. A filter
adjustment module generates a filter adjustment signal based on the
disturbance signal and the error signal. The filter adjustment signal
adjusts the transfer function.