Last updated: 10-13-99

Project: DEIMOS
Stage: Science Filter Wheel
ID #: KDSF-001A
Engineer: V. Wallace

Mechanical Description of Stage: Seven position: two are "user" positions, so can be selected and exchanged manually.

 

Electronic Description of Stage: Standard unconstrained rotory stage with seven positions.

 

Required setting accuracy :

Performance requirements and design goals
Component Requirements 1
Motors: Galil #50-1000 -
Gearbox:- -
Limits 2:- -
Fiducials: TRW OPB-970-T55 -
Encoders: Motor encoder: 4000 counts/rev -
Air Cylinders:- -
Air Solenoids:- -
Lock/Clamp/Brake:- -
Interlocks: Yes, see interlock schedule -
  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 
Motors: Galil #50-1000 3750 RPM, 1.45 Nm peak torque - -
Gearbox: - - -
Limits:  None - -
Fiducials:  TRW OPB-970-T55 - -
Encoders:  Motor encoder: 4000 counts/rev - -
Air Cylinders: - - -
Air Solenoids: - - -
Lock/Clamp/Brake: - - -

Final Mechanical Assembly and Testing Results

Motor tuning parameters under different spacial orientations and environment
Parameter  Neutral Gravity  Uphill 1 Downhill  Cold  Cold Uphill 
PID Filter: KP: - - - - -
KI: - - - - -
KD: - - - - -
Acceleration (pulses/sec^2): - - - - - -
Deceleration (pulses/sec^2): - - - - - -
Speed (pulses/sec): - - - - - -
Other: - - - - - -
  1. Uphill defined as motor (or driven end of shaft) in lowest position.
Rotary Stage (unconstrained)
Distance from "home"  Position Motor Counts  Physical Units Time to Reach
Position # 1 - - -
2 - - -
3 - - -
4 - - -
5 - - -
6 - - -
7 - - -
1 revolution CW
CCW

Resolution of Stage
Encoder Counts/Inch Counts/Millimeter Counts/Degree
On Motor - - -
On Stage - - -

NOTES:

Mechanical Drawing(s) #D5315

Electronic Drawing(s) #EL-3056

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 the drive the stage towards the forward limit.