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6DOF platform using industrial actuators and servo drives - Ethercat?

Discussion in 'DIY Motion Simulator Projects' started by Gordon_1, Apr 2, 2022.

  1. Gordon_1

    Gordon_1 New Member

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    College Lecturer, electrical and mechatronics
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    My Motion Simulator:
    6DOF
    Over the past year I have been purchasing (used) components for my 6DOF platform (sit-in with VR headset). I have 6 Thomson linear actuators, 20mm screw pitch and 800mm stroke with the capability of 6000 N of linear force. I also have 6 Beijer 400W ac servo motors with LS Mecapion 16/19 absolute encoders. It is now clear to me that is very difficult to mix and match servo motors with a different make of servo drive, so I have purchased a single used LS servo drive from South Korea. I now have the drive operating a single servo motor and tested it on one of the linear actuators. The servo motors can generate 1.27 Nm of full load torque continuously up to 3000 rpm, but can be overdriven to 4 Nm at up to 5000 rpm for short periods of time. This will normally give 1 m/s actuator velocity, but potentially up to around 1.6 m/s. The 400W motors will give a normal full load thrust of 400 N at 1 m/s which is equivalent to 40 kg of thrust. In overdrive, that will go to a max of 120 kg per actuator. I now need to confirm that my servo drives (Ethercat only interface) will work with X-Sim. Has anyone tried this out?

    Attached Files:

    Gordon_1, Apr 2, 2022
    #1
  2. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    you will need an interface that reads the serial xsimulator data stream and convert that to positional data for ethercat

    is there any documentation of the data ethercat needs ?
    Gadget999, Apr 3, 2022
    #2
  3. Rolf Bronzwaer

    Rolf Bronzwaer New Member

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    Hi Gordon,
    I am in the process of buying the exact same actuators you have. Do you know a bit more about the servo motors and drives?

    Rolf
    • Like Like x 1
    Rolf Bronzwaer, Dec 12, 2022
    #3