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  1. Instrument control development
  2. INSTRM-2719

Investigate cobras showing a different behavior in the motor map sequence from the others

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    Details

    • Type: Task
    • Status: Open (View Workflow)
    • Priority: Normal
    • Resolution: Unresolved
    • Component/s: None
    • Labels:
    • Story Points:
      6
    • Sprint:
      postRun24, preRun27Mar2026

      Description

      In 2025 September (run 24), the data were taken to measure motor map (see INSTRM-2609 for the log). At that time, there are some cobras showing a different behavior from others.

      1. Some of the bad convergence cobras drew the arc for the phi map in different orientation from the others [1].
      2. Some cobras seemed to travel >pi in phi [2].
      3. Some of the bad convergence cobra has <2pi theta range [3].
      4. Some of cobra has small theta circle (Known).
      5. Theta circle of interfering cobras is squashed by FF or adjacent cobra (Known).
      6. cobra Id 571 didn't move in phi
      7. cobra id 1018 didn't move in theta

      [1] Cobra Ids are 23, 87, 125, 136, 155, 198, 227, 356, 417, 490, 494, 533, 547, 623, 684,  710, 712, 761, 766, 825, 843, 864, 888, 1046, 1048, 1072, 1073, 1108, 1419,  1506, 1574, 1518, 1560, 1574, 1669, 1730, 1795, 1815, 1887, 1897, 1902,  2023, 2266, 2366

      [2] Cobra Ids are 434, 472, 906, 1340, 1415, 1737, 1902, 2149, 2232

      [3] Cobra Ids are 48, 108, 462, 498, 571, 856, 970, 1654, 1973, 2051, 2052, 2110, 2224

        Attachments

        1. geometry_phi_cobraid0049.png
          73 kB
          yuki.moritani
        2. geometry_phi_cobraid0168.png
          78 kB
          yuki.moritani
        3. geometry_phi_cobraid1585.png
          53 kB
          yuki.moritani
        4. geometry_phi_cobraid1641.png
          54 kB
          yuki.moritani
        5. geometry_phi_cobraid1835.png
          53 kB
          yuki.moritani
        6. geometry_theta_cobraid1018.png
          57 kB
          yuki.moritani
        7. move_cobraid136.png
          50 kB
          yuki.moritani
        8. move_cobraid2266.png
          46 kB
          yuki.moritani
        9. move_cobraid23.png
          46 kB
          yuki.moritani
        10. move_cobraid712.png
          44 kB
          yuki.moritani
        11. move_cobraid843.png
          42 kB
          yuki.moritani
        12. sample_misidentification_theta.png
          71 kB
          yuki.moritani
        13. screenshot_case1.png
          72 kB
          yuki.moritani
        14. screenshot_case2.png
          89 kB
          yuki.moritani
        15. screenshot_case3.png
          67 kB
          yuki.moritani

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            • Assignee:
              yuki.moritani yuki.moritani
              Reporter:
              yuki.moritani yuki.moritani
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              Dates

              • Created:
                Updated: