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slow_speed_considerations [2020/01/09 22:00]
asiadmin [Scanning Experiments]
slow_speed_considerations [2020/01/09 22:03] (current)
asiadmin [Scanning Experiments]
Line 73: Line 73:
 For those wishing to obtain smooth slow-speed motion – the recommendations would be to 1) use fine pitch lead screws so the motor speed can be as fast as possible, 2) use linear encoders so that the speed variation at the stage becomes visible to the control loop and can be reduced by the servo system, and 3), for critical systems, use motors without the anti-backlash gear preload. For those wishing to obtain smooth slow-speed motion – the recommendations would be to 1) use fine pitch lead screws so the motor speed can be as fast as possible, 2) use linear encoders so that the speed variation at the stage becomes visible to the control loop and can be reduced by the servo system, and 3), for critical systems, use motors without the anti-backlash gear preload.
  
-As of 2015 ASI routinely offers "​scan-optimized"​ stages that do not have the anti-backlash gearing in the scan axis (usually X) and almost always have 16 TPI leadscrews. ​ These are recommended for smoothest scanning.+As of 2015 ASI routinely offers "​scan-optimized"​ stages that do not have the anti-backlash gearing in the scan axis (usually X) and almost always have 16 TPI (1.59mm pitch) ​leadscrews. ​ These are recommended for smoothest scanning.
  
 ===== Tests on Stage with Linear Encoder and Spur Gearhead ===== ===== Tests on Stage with Linear Encoder and Spur Gearhead =====
Address: 29391 W Enid Rd. Eugene, OR 97402, USA | Phone: +1 (541) 461-8181
slow_speed_considerations.txt · Last modified: 2020/01/09 22:03 by asiadmin