Title :
Characterization of a flight control computer with rollback recovery
Author :
Malekpour, Mahyar ; Torres, Wilfredo
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
Abstract :
The design and development of a closed-loop system to study and evaluate the performance of a recoverable computer system (RCS) in high intensity electromagnetic environments (EME) is presented. A linearized model of the B737 autoland sequence running in real-time was chosen for this study, with the RCS executing the autopilot control laws and a personal computer (PC) running a model of the B737 aircraft. A Windows-based software package running on the PC was developed to handle the communication of data and commands between the RCS and the flight simulation. A MATLAB simulation model was used to analyze the recovery technique and determine potential performance improvements by proper selection of the recovery mechanism parameters. The performance results of the RCS and characteristics of its upset recovery scheme while exercising flight control laws under ideal conditions as well as in the presence of electromagnetic fields are also discussed
Keywords :
aerospace simulation; aircraft computers; aircraft landing guidance; electromagnetic compatibility; electromagnetic interference; fault tolerant computing; safety-critical software; B737 autoland sequence; EMC; MATLAB simulation model; Windows-based software package; autopilot control laws; closed-loop system; digital avionics; fault tolerance; flight control computer; flight simulation; high intensity electromagnetic environments; linearized model; personal computer; potential performance; real-time capability; recoverable computer system; reverberation chamber; rollback recovery; soft faults; upset recovery scheme; Aerospace control; Aerospace simulation; Aircraft; Communication system control; Computational modeling; High performance computing; MATLAB; Mathematical model; Microcomputers; Software packages;
Conference_Titel :
Digital Avionics Systems Conference, 2000. Proceedings. DASC. The 19th
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-6395-7
DOI :
10.1109/DASC.2000.886930
