Time Sensitive Control of Aerospace Operations
Abstract
Task 1 The theoretical objectives of the task have been achieved; the approach can now handle MTMF-type I systems with the help of hierarchical Point graphs, developed as part of the research initiative. The software implementation of the methodology, called TEMPER, incorporates some of the new features; however, a comprehensive revision of the tool is required to satisfy the objective stated. The provision for point-interval representation of time, an expressive language for specifying temporal aspects, both qualitative and quantitative, and a powerful inference engine makes the approach a potential tool for carrying out critical path analysis (i.e., CPM, PERT) for managing temporal aspects of large-scale projects. The approach is being extended to incorporate such an analysis tool in it. Task 2: The Point-interval Logic has been successfully extended and used for handling both temporal and spatial specifications of a system under investigation. The logic, however, treats the two types of specifications independent of each other. A further investigation is under way for integrating the two applications into a single formalism. A unified approach will not only be able to handle the temporal and spatial constraints as they are handled by the current approaches, but will also be able to capture motion' in space. The integration is expected to pave the way for addressing the planning re-planning problem(s).
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2003
- Accession Number
- ADA419524
Entities
People
- Alexander H. Levis
- Lee W. Wagenhals
Organizations
- George Mason University