Title :
Real-time adaptive control of knowledge based avionics tasks
Author :
Cowin, Richard ; Krikorian, Haig F.
Author_Institution :
Northrop Corp. Hawthorne, CA, USA
Abstract :
Advanced decision-making capabilities are being developed to aid the pilots of the next generation of tactical fighters. Due to the limited processing resources available in an avionics suite, efforts have focused on developing a distributed fault-tolerant software architecture that permits the real-time prioritization and scheduling of these tasks. The authors outline the design details of an architecture under development to meet these performance requirements. The system has been tested with a threat-avoidance system, implemented on a testbed of five internetted LISP workstations, to evaluate overall system capabilities including scheduling, task operations, and database accesses. It has a simulation cycle of 50 ms and synchronization between distributed nodes can be achieved within 2 ms. This test case has nine knowledge tasks, one of which is defined as a simulation cycle that drives the test case. This system has been evaluated with the current trace capabilities and runs with a peak of 16 task instances active at any time
Keywords :
adaptive control; aerospace computer control; aerospace testing; fault tolerant computing; knowledge based systems; military systems; real-time systems; scheduling; database accesses; distributed fault-tolerant software architecture; knowledge based avionics tasks; real-time adaptive control; scheduling; simulation cycle; task operations; threat-avoidance system; Adaptive control; Aerospace electronics; Computer architecture; Databases; Decision making; Fault tolerance; Internet; Software architecture; System testing; Workstations;
Conference_Titel :
Aerospace and Electronics Conference, 1989. NAECON 1989., Proceedings of the IEEE 1989 National
Conference_Location :
Dayton, OH
DOI :
10.1109/NAECON.1989.40357
