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LPF
  • jung8125
    Hey guys,
    I'm using 8bit controller 2.3 and 2.4 for a hand held gimbal,
    sometimes I can't avoid high P and D values in order to get good steadiness (above all whan I tilt more than 45°) so system starts to vibrting high frequency. LPF set on 1 or 2 sometimes help, but I read that generally it has to be 0. What's the con in tuning the value? I ask this because high frequency vibrations often occur so I wonder if I can generally use 1 or 2 as a default value for LPF.
    Thanks!!
  • Garug
    LPF slows the correction speed but sometimes it is necessary, I use it with a big RED gimbal
  • jung8125
    Ok so it's like tuning D parameter on a lower value right? Personally I have to set lpf on 1 to avoid high frequency vibrations... generally this happens when motor is weak for camera load and P and D are set on 50
  • Garug
    The LPF filters the high freguency componets from the IMU signal directly, I do not think the same effect can be archived with high D.

    I assume you have quite big camera, you could try gyro high sensitivity as you have the P and D already at 50.

    There is nothing wrong having a high P and/or D.
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