Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order

    XY Jerk and polar bed axis.

    Tuning and tweaking
    2
    2
    86
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • CNCModeller
      CNCModeller last edited by

      So now I'm slowly increasing the speed of printing on my polar printer I'm starting to see other artefacts coming in.

      The bed is changing direction very abruptly, just wanted to know how XY jerk relates to the bed axis. In the polar kinematics settings there isn't a jerk restriction only rotation speed and acceleration.

      Any constructive thoughts would be much appreciated.

      All the best.
      Barry M

      Polar Printer Duet3 Mini + 1HCL
      https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

      Wanhao D4S: Duet2
      https://forum.duet3d.com/post/296755

      Wanhao D5S & K40 Laser, Duet2 TBD
      https://www.youtube.com/CNCModellerUK

      oliof 1 Reply Last reply Reply Quote 0
      • oliof
        oliof @CNCModeller last edited by oliof

        @cncmodeller Old thread but since I read some source code today to understand how jerk is implemented in RRF I am giving a shot at answering this: AIUI, the normal limits (max speeds, accelerations, jerk) are applied to the moves in cartesian space before conversion to polar kinematics. When the moves are converted to polar kinematics, they will be further limited as needed to match stepratio and turntable speeds and accelerations as set in the M669 Kinematics setup.

        Edit: PolarKinematics::LimitSpeedAndAcceleration

        <>Creality CR-20 IDEX Duet3 mini 5+<>RatRig V-Minion SKR RRF 1.1<>

        1 Reply Last reply Reply Quote 2
        • First post
          Last post
        Unless otherwise noted, all forum content is licensed under CC-BY-SA