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ASDA-A3

System open-loop gain with resonance:

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Control Mode

6

If you increase the value of P2.025 from 0, the bandwidth (BW) becomes smaller (shown as

follows). Although it solves the problem of the resonance frequency, it also reduces the

response bandwidth and phase margin, making the system unstable.

If knowing the resonance frequency, you can suppress the resonance by using the Notch filter.

The frequency range of the notch filter is 50 - 5000 Hz and the suppression strength is

0 - 40 dB. If the frequency does not meet the Notch filter conditions, then using the low-pass

filter to reduce the resonance is suggested.

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