meiFilterPostfilterGet reads an MPIFilter object's postfilter configuration. It writes to sectionCount the number of sections within a postfilter if sectionCount is not NULL. It also writes to sections the current array of filter's postfilter sections if sections is not NULL.
The MPI calculates the post filter coefficients and takes into consideration the sample rate of the controller at that time. If you change the sample rate of the controller, you will need to recalculate the post filters. This can be done for all filters specified in Hertz by setting the filters again with the MPI. The MPI will calculate the filters using the current servo sample rate.
Postfilters are used to digitally filter the output of a control loop. One common use for postfilters is the compensation of system resonances.
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