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commands:backlash [2018/03/13 23:18]
vik
commands:backlash [2019/04/18 23:32] (current)
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 +====== Command:​BACKLASH (B) ======
  
 +--> Motorized Actuator#
 +
 +--> MS2000 or RM2000 syntax#
 +
 +^Shortcut ​ |B   ​| ​
 +^Format ​ |BACKLASH [axis] = [distance]…|
 +^Units ​   |millimeter|
 +^Remembered |Using SS Z |
 +
 +<--
 +
 +--> Tiger syntax# ​
 +
 +^Shortcut ​ |B   ​| ​
 +^Format ​ |BACKLASH [axis] = [distance]…|
 +^Units ​   |millimeter|
 +^Type    |Axis-Specific ​ |
 +^Remembered |Using [addr#]SS Z |
 +
 +<--
 +
 +This command sets (or displays) the amount of distance in millimeters to travel to absorb the backlash in the axis' gearing. ​ This backlash value works with an anti-backlash routine which ensures that the controller always approaches the final target from the same direction. ​ A value of zero (0) disables the anti-backlash algorithm for that axis.  Default depends on motor build but is 0.04 for most common 4 TPI leadscrew pitch, 0.01 for most common 16 TPI leadscrew pitch, and 0.02 for the x-axis of scan-optimized stages.
 +
 +**Example:​**
 +
 +<asi> $ B X=.05 Y=.05 Z=0 
 +:A
 +$ B x?
 +:X=0.040000 A</​asi>​
 +
 +The command in this example will make the controller move the X and Y axes to a location 50 microns away from the final target before moving to the final target, while the anti-backlash algorithm for the Z axis is disabled.
 +
 +<--
 +
 +--> MicroMirror and Tunable Lens Card#
 +^Shortcut ​ |B   ​| ​
 +^Format ​ |B [axis]=[0.1 or 650] …|
 +^Units ​   |Frequency in kHZ|
 +^Type    |Axis-Specific ​ |
 +^Remembered |Using [addr#]SS Z |
 +
 +This command is “recycled” for a different use in MicroMirror axes than for motor axes.  In the context of a MicroMirror axis this command is used to set the cut off frequency of the 5th order Bessel filter. ​ Units are in KHz.  The lowest acceptable value is 0.1 (100Hz) and highest is 650 (650kHz). ​ For a typical micro-mirror to avoid mechanical resonance this should be set no higher than 0.8 kHz. \\
 +**Example:​**
 +<asi> $ B R=0.1 S=0.1 
 +:​A</​asi>​
 +Sets 100Hz filter cut off freq for R and S axes
 +<asi> $ B P? Q?  
 +:P=0.4 B=0.4 A</​asi>​
 +Queries the filter cut off freq for P and Q axes
 +
 +
 +
 +<--
 +
 +
 +
 +{{tag>​commands tiger ms2000 micromirror tlens}}
Address: 29391 W Enid Rd. Eugene, OR 97402, USA | Phone: +1 (541) 461-8181
commands/backlash.txt · Last modified: 2019/04/18 23:32 (external edit)