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Quiet drives for AASD Servos available on AliExpress

Discussion in 'Motor actuators and drivers' started by Dirty, Dec 10, 2021.

  1. Dirty

    Dirty Well-Known Member Gold Contributor

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    Hey :)

    I saw that some stores on AliExpress starting to have "Quiet Drives" as option for AASD servos. I checked a bunch, and it's not all of them, but this one for example has them:
    Screenshot 2021-12-10 at 10.48.33.png
    ...at least on their 80ST M04025 Servos. Link

    For some reason they chose to make them in.... gupl.....white! ...but I put them in a box anyways.

    They're just a 10€ upgrade, which seems reasonable to me, given that I have spent much more on sound deadening material for my driver-box:
    IMG_3385.JPG IMG_3390.JPG IMG_3386.JPG

    Lid open:
    IMG_3250.jpeg

    Lid closed:
    IMG_3251.jpeg

    That's a reduction by an order of magnitude, but the 10KHz whining noise is still audible.

    Has anyone ever used these quiet drives? Do they keep what they promise? Do they have any disadvantages? Do they cause less EMI problems as well?
    • Like Like x 1
    Last edited: Dec 10, 2021
    Dirty, Dec 10, 2021
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Do these have shielding?
    noorbeast, Dec 10, 2021
    #2
  3. cfischer

    cfischer Active Member Gold Contributor

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    Some of us have been watching for feedback. You're the first. Thanos promised feedback but I havent seen it. I'm not jumping up and down for it, just curious really. Looking forward to seeing somebody show us what different components are used.
    Seems to me the issue is the switching frequency which I thought was fundamental to the drive.
    cfischer, Dec 10, 2021
    #3
  4. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    As soon I get one of the AASD plus drives on my hands will make comparison video with spectrometer and EMI sensors...
    • Like Like x 2
    Thanos, Dec 11, 2021
    #4
  5. cfischer

    cfischer Active Member Gold Contributor

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    • Like Like x 1
    cfischer, Dec 11, 2021
    #5
  6. HI_iam_new

    HI_iam_new 0dof

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    Neat! I was planning on asking the same question until I read this thread. I'm thrilled to know that the notorious whine is eliminated with these. :)

    Thanks for the link @cfischer!
    HI_iam_new, Jan 21, 2022
    #6