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Size: 1662
Comment:
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← Revision 36 as of 2019-09-13 11:52:43 ⇥
Size: 2428
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| * Optimized feedback based on a cost function * Situation-sensitive filter adaptation with peripheral environmental monitors * Robust mode for surfing earthquakes without lock loss |
* Optimized feedback based on a cost function * Situation-sensitive filter adaptation with peripheral environmental monitors * Robust mode for surfing earthquakes without lock loss |
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| * PR2 TM magnet polarizatio | * PR2 TM magnet polarization. * Repair of SRM Bottom Filter. * Addition of BS Top Filter yaw motor. * Replacement of Top Filter thrust bearing. * Replacement of ferromagnetic connectors in BS, SR3 and SRM. (So far we don't have a plan to take out SR2 ot of the tank.) |
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| * Renovate unfixed Dsub connections around IP. (Type-A, EY only, [[https://www.dropbox.com/s/iatmy863o6cq7js/Renovate%20EY%20In-vacuum%20cabling.pdf?dl=0|memo]] ) * (EY) One PTFE cable should be swapped. |
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| * Add limit swich on vertical fishing rod.[[attachment:FR BF unit_idea.pdf]] | |
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== Electrical Upgrade == * Connect the Release-sensor's signal to the digital system. (Type-A, If necessary.) * PR3 traverser in-vac cabling * [Type-A] add another oplev at MN-stage in order to degenerate P and R coupling. |
Ideas for VIS improvement/upgrade
Control
- Inertial control for Type-B
- Hierarchical control of Type-A
- Organize tools for commissioners (auto-measurement, safe.snap, etc...)
- Noise budgeting
- Feedforward using seismometers
- Auto health checking system
- Measurement-based suspension modeling with system identification
- Optimized feedback based on a cost function
- Situation-sensitive filter adaptation with peripheral environmental monitors
- Robust mode for surfing earthquakes without lock loss
Safety
- Status monitor
- Better watchdog
Mechanical Repair
- ETMY GAS filters
- ETMX F2 GAS
- ITMX and ITMY F0 GAS
- ITMY BF Yaw pico
- BS F0 Yaw stepper
- PRM IM magnet polarization
- PR2 TM magnet polarization.
- Repair of SRM Bottom Filter.
- Addition of BS Top Filter yaw motor.
- Replacement of Top Filter thrust bearing.
- Replacement of ferromagnetic connectors in BS, SR3 and SRM. (So far we don't have a plan to take out SR2 ot of the tank.)
- Fishing rod repair:
- SR3 SF: it does not move (klog 8658).
- SR3 BF: it does not allows us to move the keystone to zero (klog 8658).
- BS SF: it does not allow us to move the keystone to zero (klog 8645).
- BS F0: it does not allow us to move the keystone to zero (klog 8645).
Electrical Repair
- Signal generator cards for LVDT drivers.
Renovate unfixed Dsub connections around IP. (Type-A, EY only, memo )
- (EY) One PTFE cable should be swapped.
Mechanical Upgrade
- OSTM suspension
- Jigs for removing the payload part of Type-B/Bp without disassembling everything
- Rotate the cryopayload of Type A for easy access of the mirror (cleaning, repair, etc)
- Optical Lever Covers
- ACCs for inertial damping.
New design of GAS filters considering 40kg TM (Memo).
Add limit swich on vertical fishing rod.FR BF unit_idea.pdf
- For Tyep-A, add a damping system for the 2nd-yaw-mode, where BF is at the node.
Electrical Upgrade
- Connect the Release-sensor's signal to the digital system. (Type-A, If necessary.)
- PR3 traverser in-vac cabling
- [Type-A] add another oplev at MN-stage in order to degenerate P and R coupling.