Citation
Abstract
The linear quadratic Gaussian (LQG) controller for the DSS-14 antenna was designed, and its performance was compared with the existing controller. The controller design included the antenna field testing, system identification to obtain the controller model, and the gain determination. The performance of the new controller is significantly improved over the existing one, both in the tracking and in the wind disturbance rejection properties. The performance can be improved further if the command preprocessor is installed. The preprocessor prevents limit cycling that is caused by the acceleration limits during slewing. The new controller is designed for the "computer" (or encoder-based) mode. The "precision" mode (that includes the master equatorial) needs to be investigated separately.
Keywords
Details
- Volume
- 42-135
- Published
- November 15, 1998
- Pages
- 1–9
- File Size
- 399.5 KB