Hi everyone, it appears there is serious software and/or engineering issue with the PV2+ gimbal control loops.
Under some gimbal axes angles, gimbal control loops becomes unstable and resonates slightly with about 40-60Hz frequency. This instability is delicate - you can feel vibrations and hear slight hum, but it is enough to ruin best moments of your shot by creating intermittent jello. Best way to check it, is to turn on PV2+, connect the phone app and tilt the gimbal to various angles while moving the whole PV2+ in the hand to various angles. At certain positions and angles, PV2+ gimbal got unstable and stabilizes back after moving out the critical angle. It also appears there is control loop auto-tuning implemented in the control, doing auto-tuning on power-on but it just not work (these jerky gimbal movements on PV2+ power on). With other gimbals users can adjust loops gains manually or even turn on notch filters to eliminate mechanical resonances, but not in P2V+.
Anyone noticed occasional jello in your shots?
Hey DJI, are you listening?
Under some gimbal axes angles, gimbal control loops becomes unstable and resonates slightly with about 40-60Hz frequency. This instability is delicate - you can feel vibrations and hear slight hum, but it is enough to ruin best moments of your shot by creating intermittent jello. Best way to check it, is to turn on PV2+, connect the phone app and tilt the gimbal to various angles while moving the whole PV2+ in the hand to various angles. At certain positions and angles, PV2+ gimbal got unstable and stabilizes back after moving out the critical angle. It also appears there is control loop auto-tuning implemented in the control, doing auto-tuning on power-on but it just not work (these jerky gimbal movements on PV2+ power on). With other gimbals users can adjust loops gains manually or even turn on notch filters to eliminate mechanical resonances, but not in P2V+.
Anyone noticed occasional jello in your shots?
Hey DJI, are you listening?
