• Type-A_ControlMeeting20200804

Type-A control meeting 2020/8/4

Zoom 2

Agenda

• Control simulation result with the upgraded actuators [Shoda] Slides

• Modal damping [Nakano] Slides

• Eddy current damping [Ushiba] Slides

A/I

• Modal Damping
  • Near term
    • Implement it to one of the ETMs (Nakano, Miyo)
      • Try lock acquisition
    • If the above works, implement to all the Type-As (Nakano, Miyo)
      • Then lock PRFPMI and check the low frequency noise
  • Longer term
    • If successful with Type-A, implement it to all the other suspensions.
  • Improvement
    • Form optimal combinations of actuators for each mode
  • Integration with Simulation
    • Import the modal damping for one of the modes to the current model (Shoda)
    • See if we can reproduce the phase delays between stages by introducing asymmetries in the suspension model (Shoda)
• Eddy current damping of MN coil bobbins

  • More detailed calculations with the method described in https://arxiv.org/abs/2007.09571 (Ushiba)