Citation
Abstract
In order to ensure smooth and stable antenna motion, the DSN antennas are commanded by the command preprocessor (CPP). The preprocessed command generated by the CPP prevents the antenna from jerking and limit cycling, but it is not designed to move the antenna without overshoots during position offsets, acquisition of targets, or slewing (the antenna overshoots if its position exceeds the commanded position before approaching the commanded position). It is desirable to reduce or eliminate overshoots since they increase the acquisition time and may cause damage while moving the antenna to the stow position or when approaching the cable-wrap limits. The article presents an upgrade of the existing CPP such that antenna overshoots are negligibly small and the acquisition time is close to the optimal.
Keywords
Details
- Volume
- 42-150
- Published
- August 15, 2002
- Pages
- 1–11
- File Size
- 246.9 KB