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3
Error Correction
Stage Error Correction can be entered into the Mx200 systems by two different methods. Either the
error correction data is entered(imported) directly through the error correction interface, or the
correction data is imported from an existing correction file.
The following section will describe the process of entering stage calibration data into the Mx200.
Squareness, LEC, and SLEC corrections are all executed by collecting actual measurement
results(observed) from the measuring system, and then entering the results directly into the appropriate
calibration screen. The nominal, or certified, geometries(actual) for the calibration artifact being used
are also entered into the system.
Note:
There are multiple methods and procedures by which the error correction data for Squareness,
LEC, SLEC, and NLEC can be collected. While some sample procedures for calibrations have been
provided below, these sections are intended more to provide the procedure by which the correction
data is entered in the Mx200, not necessarily how it is collected.
3.1
Entering Squareness Correction
The squareness calibration in the Mx200 applies a linear correction coefficient based on a calculated
correction angle. This calculated correction angle should reflect the actual amount of mechanical
squareness error in the system.
The squareness error of a system can be measured by using a large calibrated square artifact that covers
as much of the machines valid measuring area as possible.
•
Measure the four sides of the squareness calibration artifact as line features.
•
Construct a point intersect at each corner.
