Last updated: 2-20-01

Project: DEIMOS
Stage: Slit Mask Selection
ID #: KDSM-001A
Engineer: V. Wallace

Mechanical Description of Stage:

 

Electronic Description of Stage: Driven by Galil Controller #2 - Stage "E" - Requires EL-1236R (Reverse) interface box.

 

Required setting accuracy:

Performance requirements and design goals
Component Requirements *
Motor: Galil 50-1000 -
Gearbox: Ball Screw & Actuator Co. M23S8-SRA2-5010-20 -
Limits **: Microswitch DT-2RV22-A7 -
Fiducials: Opto-Interruptor TRW #OPB-970-T55 (Optical) -
Encoders: On motor -
Air Cylinders: -
Air Solenoids: -
Lock/Clamp/Brake: None -
Interlocks: See Interlock Schedule -
* Speed, temperature, accuracies, electrical power, pressurized air, lubricant, coolant, N2 purge, ...
** Primary (soft) and secondary (hard) limits. These can be magnetic, optical, or physical contact

NOTES:

Manufacturer's specifications and limitations
Component Maximum Operating Condition  Safe Ops Condition  Requirements 
Motor: - - -
Gearbox: - - -
Limits: - - -
Fiducials: - - -
Encoders: - - -
Air Cylinders: - - -
Air Solenoids: - - -
Lock/Clamp/Brake: - - -

Final Mechanical Assembly and Testing Results

Tests performed by: Ken Dietsch / Vern Wallace / C. Harper



 
 
 
 
 

Motor tuning parameters under different spacial orientations and environment
Parameter    Neutral Gravity  Uphill * Downhill  Cold  Cold Uphill 
PID Filter: KD:  404 @ 270&90 - - - -
KP:   79   " - - - -
KI:    30  " - - - -
Acceleration (pulses/sec^2): - 256000 - - - -
Deceleration (pulses/sec^2): - 256000 - - - -
Speed: -  5000 - - - -
Other: CN 1,1      CB9 for home fiducial, CB41 for all others -   - - - -
*Uphill defined as motor (or driven end of shaft) in lowest position
 
 

Motion Parameters

Linear Stage (constrained)
Distance from "home" * Position Primary Encoder Counts  Aux Encoder Counts  Physical Units Time to Reach
Primary (soft) Limits:  Forward   308651 - - -
Reverse  -598232 - - -
Secondary (hard) Limits:  Forward   321688 - - -
Reverse  -709447 - - -
Position # Index  0 - - -
Load   -579530      
1   -529530 - - -
2   -422167 - - -
3   -322753 - - -
4   -230820 - - -
5   -153094 - - -
6    -78331 - - -
7     -11183 - - -
8      50525 - - -
9    106898 - - -
10    158944 - - -
11    205994 - - -
12    248982 - - -
13    287696 - - -
*"Coarse" if from optical interupter, "Fine" if from an encoder index pulse. Home is defined at index pulse on Aux. encoder if so equiped, otherwise at optical fiducial.
 
 

Resolution of Stage
Encoder Counts/Inch Counts/Millimeter Counts/Degree
Primary  - - -
Auxiliary - - -

NOTES:

Mechanical Drawing(s) # D1211

Electronic Drawing(s) #

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.

The Slitmask Cassette stage uses Controller # 2, amplifier 2B and is connected to the E axis.