Difference between revisions of "VTube-LASER Cylinder Fit Tolerances"
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* Back to [http://www.advancedtubular.com/vtube-laser.htm the Main VTube-LASER] web page | * Back to [http://www.advancedtubular.com/vtube-laser.htm the Main VTube-LASER] web page | ||
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− | VTube-LASER uses surface points scanned with laser or measured with ball probes to calculate | + | VTube-LASER uses surface points scanned with laser or measured with ball probes to calculate tube centerlines. Regular tube scans assume that the primitive shape to solve for is a cylinder.<br><br> |
When solving for a cylinder centerline, it's important to report the estimated accuracy of the calculation. The estimated accuracy helps us know how confident we can be in the calculation.<br><br> | When solving for a cylinder centerline, it's important to report the estimated accuracy of the calculation. The estimated accuracy helps us know how confident we can be in the calculation.<br><br> | ||
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− | VTube-LASER reports | + | VTube-LASER reports the accuracy of the centerline fit in the Cylinder Fit Data window. The values are deviations for RADIUS, X POSITION and Y POSITION.<br><br> |
− | * RADIUS: Estimate the | + | * RADIUS: Estimate the maximum deviation of the DIAMETER radius (or half the diameter). |
− | * X or Y POSITION: Estimate the | + | * X or Y POSITION: Estimate the deviation of the X or Y positions of the end points of the cylinder.<br><br> |
These estimate values are calculated using statistical math. The values are standard deviation x 2, which means that we have 95% assurance that the these values are the maximum deviation. | These estimate values are calculated using statistical math. The values are standard deviation x 2, which means that we have 95% assurance that the these values are the maximum deviation. | ||
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Revision as of 16:44, 20 February 2017
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VTube-LASER uses surface points scanned with laser or measured with ball probes to calculate tube centerlines. Regular tube scans assume that the primitive shape to solve for is a cylinder. |
VTube-LASER reports the accuracy of the centerline fit in the Cylinder Fit Data window. The values are deviations for RADIUS, X POSITION and Y POSITION.
These estimate values are calculated using statistical math. The values are standard deviation x 2, which means that we have 95% assurance that the these values are the maximum deviation. |
To simplify terminology, we say that the highest of the X and Y values is the "wobble deviation". If the centerline calculation is very good, then wobble deviation decreases. If the calculation or fit is poor, then the wobble deviation is too high. |
Default Setup
The default setup has
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Testing Sounds For Your VTube Computer
Not all computers play these sound files the same way. For example some computer speakers go into an idle shutdown mode that can never start up fast enough to play the short sounds. |
Other Pages
- Back to VTube-LASER
- Back to VTube-STEP