ACU-RITE MILLPWR G2, Техническое руководство

Страница: 331 / 546

5.13 The Control Loop 331
Tolerance for
corners and arcs
A distinction is made between corners and arcs when estimating the filter
error. Therefore, the tolerance at corners (MP_pathTolerance effective) and on
arcs (MP_curveTolFactor * MP_pathTolerance effective) can be set sepa-
rately. This results in different maximum velocities.
If, based on the contour geometry, a progression of straight lines is recognized
as an arc, the tolerance from MP_pathTolerance is multiplied by the value in
MP_curveTolFactor. This enables the velocity to be increased (with lower con-
tour accuracy) on curved contours, but not at corners.
Curvature changes cause a jerk resulting in a reduction of speed. If the value
in MP_curveJerkFactor does not equal 0, the reduced speed is multiplied by
this value.
For example, if oscillations occur on the workpiece at line-to-arc transitions,
the speed can be reduced by MP_curveJerkFactor <1.
MP_curveTolFactor and MP_curveJerkFactor are evaluated for smoothing the
contour. Function of the filters.
MP_curveTolFactor
Factor for path tolerance on arcs
Format: Numeric value
Input: 0.5 to 100.000 000 000]
Default: 1]]
MP_curveJerkFactor
Factor for feed rate reduction at curvature changes
Format: Numeric value
Input: 0 to 100.000 000 000]
0: No further feed rate reduction
Default: 1]]
Settings in the configuration editor:
NCchannel
channelSettings
Key for channel
CfgLaPath
curveTolFactor
curveJerkFactor