Title :
Attitude and articulation control for the Cassini spacecraft: a fault tolerance overview
Author :
Brown, G. Mark ; Bernard, Douglas E. ; Rasmussen, Robert D.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
This paper describes how fault tolerance has been addressed in the design of the Attitude and Articulation Control Subsystem for the Saturn-bound Cassini spacecraft. Cassini´s fault tolerance objectives have strongly influenced the subsystem´s level of autonomy, and have motivated some significant improvements over the autonomous capabilities of previous interplanetary spacecraft. Autonomous fault tolerant behaviors have been embedded at several points in the object-oriented flight control software, including a dedicated set of failure detection, isolation, and recovery algorithms
Keywords :
aerospace computing; aerospace control; attitude control; fault tolerant computing; reliability; special purpose computers; Cassini spacecraft; Saturn mission; activation rules; articulation control; attitude control; autonomous capabilities; control subsystem design; error monitors; failing operational; failing safe; failure detection algorithms; fault tolerance; isolation algorithms; multiple failures; object-oriented flight control software; pointing; recovery algorithms; repair managers; response scripts; single event upsets; Attitude control; Automatic frequency control; Communication system control; Earth; Fault tolerance; Instruments; Propulsion; Saturn; Space vehicles; Telemetry;
Conference_Titel :
Digital Avionics Systems Conference, 1995., 14th DASC
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-3050-1
DOI :
10.1109/DASC.1995.482828
