Calculating backlash compensation – Hypertherm V9 Series Phoenix Rev.11 User Manual
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Phoenix 9.76.0 Installation and Setup Manual 806410
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10 – Motion Compensation
Phoenix software compensates for these position deviations as it commands motion up and down the axis. The amount of
compensation is based on the current position in relation to the previous and next target and the deviations between the
targets.
Calculating Backlash Compensation
In addition to calculating position deviation from the data in the files from the laser interferometer, Phoenix software
calculates mechanical backlash compensation. The backlash calculation assumes a reverse move at the beginning of
each run.
Phoenix calculates backlash compensation using the following steps:
1. Calculates the difference between the first target and the last target for each run.
2. Adds together the results for each run to obtain the total backlash for both runs.
3. Divides this sum by the number of runs.
The result is the average backlash across all runs at the first and last targets.
The following example data file provides the data for the backlash compensation calculation that is outlined below it.
Target #
Position
Motion compensation
1
0.0 in
0.0 in
1.5 in
0.125 in
3.0 in
0.25 in
4.5 in
0.375 in
2
6.0 in
0.5 in
9.0 in
0.625 in
3
12.0 in
0.75 in
Run
Target
Data
1 1
0.40
mm
1
2
0.30 mm
1
3
0.40 mm
2
3
0.60 mm
2
2
0.25 mm
2
1
0.60 mm