AKD User Guide | 14 Tuning Your System
Tuning Systems with High-Frequency Resonances
Some systems have resonances at very high frequencies (greater than 1 kHz). When the resonance is this large,
it can prove a challenge in tuning, because these systems generate high noise levels that are often audible. An
example of a large resonance is shown below. This example is from a steel flywheel mounted to an AKM 22E
motor. The source of the resonance is the spring mass relationship between the motor rotor, shaft, and flywheel.
One way to resolve this problem is to use a low-pass filter in the feedback path. To use this filter, simply check
the Enable Lowpass Search in the Autotuner, which is the default behavior.
148 Kollmorgen | December 2010
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