Last updated: 12-13-01

Project: DEIMOS
Stage: Dewar Shutter
ID #: KDCS-001A
Engineer: D. Cowley

Mechanical Description of Stage:


Electronic Description of Stage:


Required setting accuracy:

Performance requirements and design goals
Component Requirements 1
Limits 2: Bimba reed switch MRS-.087-XBL-02
Two per cylinder, four total
Encoders: None  
Air Cylinders: 2
Bimba #MRS-025-DXP-UG
Air Solenoids: 2
Skinner #73419AN2NN00M1JO11C2
  1. Speed, temperature, accuracies, electrical power, pressurized air, lubricant, coolant, N2 purge, ...
  2. Primary (inner) and secondary (outer) limits. These can be magnetic, optical, or physical contact

Manufacturer's specifications and limitations
Component Maximum Operating Condition  Safe Ops Condition  Requirements 
Air Cylinders:    
40 PSI
Air Solenoids:    

Final Mechanical Assembly and Testing Results

Tests performed by:

Motor tuning parameters under different spacial orientations and environment
Parameter    Set 
PID Filter: KD:
Acceleration (pulses/sec^2):    
Deceleration (pulses/sec^2):    
Speed (pulses/sec):    
  1. Uphill defined as motor (or driven end of shaft) in lowest position

Motion Parameters

Linear Stage (constrained)
Distance from "home" 1 Position Motor Counts  Physical Units Time to Reach
Software Limits:  Forward      
Primary (inner) Limits:  Forward      
Secondary (outer) Limits:  Forward      
Position # IN      ?
OUT      ?
  1. "Coarse" if from optical interupter, "Fine" if from an encoder index pulse. Home is defined as zero counts.
  2. Primary limits signal the controller to stop motion. Secondary limits cut motor power and require intervention to move out of them.


Mechanical Drawing(s) #D5400

Electronic Drawing(s) #EL-1183, EL-1233

Sign conventions are such that a positive motion of the motor turns the motor in a CW direction as viewed from the drive shaft looking back into the motor, and will drive the stage towards the forward limit.