Citation
Abstract
In order to meet the requirements for precision pointing of 34-m antennas, adequate control design and simulation software have to be developed, with a detailed description of the supporting analytical tools. This article describes a control system model for the elevation drive of the DSS 13 antenna. The model allows one to simulate elevation dynamics, cross-coupled dynamics in azimuth and elevation, and RF pointing error. A modal state-space model of the antenna structure was obtained from its finite-element model with a free rotating tipping structure. Model reduction techniques were applied separately for the antenna model and rate-loop model, thereby reducing the system order to one-third of the original one while preserving its dynamic properties. Extensive simulation results illustrate properties of the model.
Details
- Volume
- 42-105
- Published
- May 15, 1991
- Pages
- 83–108
- File Size
- 694.7 KB