Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter...
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Transcript of Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter...
![Page 1: Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter (Schematic) We want to rotate the shutter into one of three.](https://reader036.fdocuments.us/reader036/viewer/2022082409/5697bfaa1a28abf838c9a647/html5/thumbnails/1.jpg)
shutter pushpull schematic2.ppt
Present Manual Control System for Alcator C-Mod MSE Shutter (Schematic)
We want to rotate the shutter into one of three positions:
• Position #1: linear feedthrough A almost fully “in” & feedthrough B almost fully “out”.• Position #2: linear feedthrough B almost fully “out” & feedthrough B almost fully “in”.• Position #3: linear feedthroughs A and B in an intermediate position.
• To ensure that all cables remain in a state of tension, the back ends of the two linear feedthroughs are connected with a restraining cable that loops around two wheels supported on fixed axles.
• Presently, we manually push and pull to position the shutter in the desired position.
• To ensure that the rotatable shutter is positioned properly, we need an accuracy of about 2 millimeters on the position of each linear feedthrough.
• The system of wire cables that controls the movement of the rotatable shutter is pretty “stiff”. I estimate that about 5-10 pounds of force are required to move them.
• If we pull too far in one direction, we will probably break the connection between the internal wire cable and the shutter. So we to provide for stops that limit the push-pull of both linear feedthroughs.
Linear feedthrough A
Linear feedthrough B
wire cable
wire cable
Rotatable shutter(in vacuum)
restrainingcable
clamps tofeedthroughs rod
frame supportingwheelsconflats
stiff tube
handle
![Page 2: Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter (Schematic) We want to rotate the shutter into one of three.](https://reader036.fdocuments.us/reader036/viewer/2022082409/5697bfaa1a28abf838c9a647/html5/thumbnails/2.jpg)
shutter pushpull schematic2.ppt
Proposal #1 for Remote MSE Shutter Control
Linear feedthrough A
Linear feedthrough B
14CCF series Berg Cable chain 0.1475” pitch
Need to figure out means of
connection to linear feedthrough
2.5”
14LP5S-52 Berg chain sprocketSprocket diameter = 2.4563”
OD = 2.536”, 3/8” bore(pin or clamp hubs assemble on request)
Optical slot switches (TBD)
![Page 3: Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter (Schematic) We want to rotate the shutter into one of three.](https://reader036.fdocuments.us/reader036/viewer/2022082409/5697bfaa1a28abf838c9a647/html5/thumbnails/3.jpg)
shutter pushpull schematic2.ppt
Remote MSE Shutter Control
Linear feedthrough A
Linear feedthrough B
14CCF series Berg Cable chain 0.1475” pitch
Need to figure out means of
connection to linear feedthrough
2.5”
Berg chain sprocket(Size to match existing wheels)
Optical slot switches (TBD)
1.0-1.75” diameterBerg chain sprocket
Need belt tensioner?
![Page 4: Shutter pushpull schematic2.ppt Present Manual Control System for Alcator C-Mod MSE Shutter (Schematic) We want to rotate the shutter into one of three.](https://reader036.fdocuments.us/reader036/viewer/2022082409/5697bfaa1a28abf838c9a647/html5/thumbnails/4.jpg)
shutter pushpull schematic2.ppt
Chainsprocket
shaft
Torque limiters (2)Are these needed?
Steppermotor
SupportingFrame
motordrive
electronics
powersupply
PLC
optical switchoutputs ?
Schematic of Stepper Motor Control System