AKD PDMM User Guide | 12.3.6 Using Anti-Resonance Filters
picture below has an ideal value of IL.KAFF of 1.7.
12.3.6 Using Anti-Resonance Filters
The AKD PDMM has four anti-resonance filters. Two filters are in the forward path and two are in the feed-
back path.
Similarities
l
Both types are typically used to enhance stability and performance of the system.
Differences
l
Forward path filters result in higher phase lag in closed loop system response.
l
Forward path filters limit spectrum from reaching the motor / feedback path filters only filter the
feedback after it has been to the motor.
12.3.6.1 Types of Anti-Resonance Filters
Low Pass
A low pass filter allows signals through below a corner frequency and attenuates the signals above the
same corner frequency. The behavior at the corner frequency can be specified with the low-spass Q.
Kollmorgen™ | December 2012
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Summary of Contents for AKD PDMM series
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