Detailed description
2.5 Optimization of the control
Basic logic functions: Velocities, Setpoint/Actual Value Systems, Closed-Loop Control (G2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
79
2.5.3
Position controller position setpoint filter: new jerk filter
Application
In some applications, such as when milling sculptured surfaces, it can be advantageous to
smooth the position setpoint curves to obtain better surfaces, due to reduced excitations of
machine vibrations.
Functionality
The filter effect of the position setpoints must be as strong as possible without impermissibly
affecting contour accuracy.
The smoothing behavior of the filter must also be as "symmetrical" as possible, i.e., if the
same contour was to be traveled in both forward and reverse, the characteristic rounded by
the filter should be as similar as possible in both directions.
The effect of the filter can be monitored by means of the effective servo gain factor (K
V
),
which is displayed on the Axis service screen form. The filtering effect rounds the position
setpoints slightly, thus reducing the path accuracy so that with increasing filter time a smaller
effective servo gain factor (K
V
) is displayed.
Advantages
The filter available since software version 1, which is set via:
MD32400 $MA_AX_JERK_ENABLE = 1
and
MD32410 $MA_AX_JERK_TIME = filter time,
meets the requirements for a strong filter effect with smoothing behavior that is as
symmetrical as possible for small time constants of up to approximately 10 ms.
A considerably better result is achieved using this new filter type for axial jerk limitation with
floating averaging. In this case, filter time constants of approx. 20 to 40 ms can be used,
depending on the particular machine.
Thanks to the floating averaging, the new filter achieves lower contour errors with the same
smoothing effect, compared with the previous 2nd degree filter type. The contour of the
smoothing behavior is to a large degree balanced.
Содержание SINUMERIK 840D sl
Страница 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 286: ...Table of contents Basic logic functions Diagnostic tools D1 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 328: ...Constraints Basic logic functions Diagnostic tools D1 46 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 330: ...Examples Basic logic functions Diagnostic tools D1 48 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 340: ...Table of contents Basic logic functions Travel to fixed stop F1 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 342: ...Brief Description Basic logic functions Travel to fixed stop F1 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 382: ...Supplementary conditions Basic logic functions Travel to fixed stop F1 46 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Страница 790: ...Table of contents Basic logic functions Axes coordinate systems frames K2 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 946: ...Table of contents Basic logic functions Emergency Stop N2 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 948: ...Brief Description Basic logic functions Emergency Stop N2 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 956: ...Restrictions Basic logic functions Emergency Stop N2 14 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 958: ...Examples Basic logic functions Emergency Stop N2 16 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 966: ...Table of contents Basic logic functions Transverse axes P1 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 978: ...Supplementary conditions Basic logic functions Transverse axes P1 16 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 980: ...Examples Basic logic functions Transverse axes P1 18 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 982: ...Data lists 5 1 Machine data Basic logic functions Transverse axes P1 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 984: ...Index Basic logic functions Transverse axes P1 22 Function Manual 11 2006 6FC5397 0BP10 2BA0 Work offset external 13 ...
Страница 990: ...Table of contents Basic logic functions PLC Basic program powerline P3 pl 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1268: ...Supplementary conditions Basic logic functions PLC Basic program powerline P3 pl 284 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1270: ...Examples Basic logic functions PLC Basic program powerline P3 pl 286 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1280: ...Table of contents Basic logic functions PLC basic program solution line P3 sl 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1542: ...Examples Basic logic functions PLC basic program solution line P3 sl 268 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1604: ...Examples Basic logic functions Reference Point Approach R1 58 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1616: ...Brief Description Basic logic functions Spindles S1 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1703: ...Basic logic functions Spindles S1 Function Manual 11 2006 6FC5397 0BP10 2BA0 93 Constraints 3 No supplementary conditions apply ...
Страница 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1776: ...Detailed description 2 3 Feedrate control Basic logic functions Feeds V1 60 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1786: ...Data lists 5 3 Signals Basic logic functions Feeds V1 70 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1794: ...Table of contents Basic logic functions Tool Offset W1 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1798: ...Short description Basic logic functions Tool Offset W1 10 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1992: ...Data lists 5 3 Signals Basic logic functions Tool Offset W1 204 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 2002: ...Brief description Basic logic functions NC PLC interface signals Z1 6 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Страница 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...