Designing Dynamic Temporal Controls for Critical Systems
| dc.contributor.author | Choi, Seonho | en_US |
| dc.contributor.author | Agrawala, Ashok K. | en_US |
| dc.contributor.author | Shi, Leyuan | en_US |
| dc.date.accessioned | 2004-05-31T22:46:43Z | |
| dc.date.available | 2004-05-31T22:46:43Z | |
| dc.date.created | 1997-05 | en_US |
| dc.date.issued | 1998-10-15 | en_US |
| dc.description.abstract | Traditional control systems have been designed to exercise control at regularly spaced time instants. When a discrete version of the system dynamics is used, a constant sampling interval is assumed and a new control value is calculated and exercised at each time instant. In this paper, we propose a new control scheme, {\it dynamic temporal control}, in which we not only calculate the control value but also dynamically decide the time instants when the new control computations have to be calculated. Taking a discrete, linear, time-invariant system, and a cost function which reflects a cost for computation of the control values, as an example, we show the feasibility of using this scheme. We implement the dynamic temporal control scheme in a rigid body satellite control example and demonstrate the significant reduction in cost. The scheme proposed here can be implemented using real-time operating system, such as {\em Maruti}, which schedules activities along the time axis. The reduced computations for control permit the use of the same processor for higher level functions resulting in a significant improvement in the performance of the overall system. (Also cross-referenced as UMIACS-TR-97-51) | en_US |
| dc.format.extent | 709402 bytes | |
| dc.format.mimetype | application/postscript | |
| dc.identifier.uri | http://hdl.handle.net/1903/905 | |
| dc.language.iso | en_US | |
| dc.relation.isAvailableAt | Digital Repository at the University of Maryland | en_US |
| dc.relation.isAvailableAt | University of Maryland (College Park, Md.) | en_US |
| dc.relation.isAvailableAt | Tech Reports in Computer Science and Engineering | en_US |
| dc.relation.isAvailableAt | UMIACS Technical Reports | en_US |
| dc.relation.ispartofseries | UM Computer Science Department; CS-TR-3804 | en_US |
| dc.relation.ispartofseries | UMIACS; UMIACS-TR-97-51 | en_US |
| dc.title | Designing Dynamic Temporal Controls for Critical Systems | en_US |
| dc.type | Technical Report | en_US |