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UOT 004
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ITI əməkdaşlarının elmi işləri - tezis |
Biblioqrafik təsvir | Kazimov , T.H. Fault detection, isolation and recovery (FDIR) in satellite onboard software / T.H. Kazimov // Proqram mühəndisliyinin aktual elmi-praktiki problemləri‖ I respublika konfransı. - Bakı, 2017. - P. 329-332. | Annotasiya | The complexity of the avionic systems in satellites is
rising as space missions become increasingly more sophisticated.
This complexity emphasizes the need for more dependable
systems with minimal anomalies. As satellite manufactures seek
to convert many hardware implemented functionalities into
software, the On-Board Software (OBSW) is becoming a major
component in every satellite. Noticeably, more tasks for Fault
Detection, Isolation and Recovery (FDIR) are being implemented
in software, where the need comes for a well-defined software
architecture that supports a cost-effective implementation of the
FDIR functions. FDIR was already explained as key functionality
of the OBSW. Obviously not all failures are subject to onboard
identification and not all failures are subject to onboard
recovery. The FDIR concept to be worked out for the spacecraft
during the engineering phase follows some basic requirements
and principles, implements a certain failure hierarchy- specifying
furthermore on which level the failure is to be fixed- and finally it
implements a consistent approach for the functionality
transferring the spacecraft to Safe Mode and how to recover
from there. Since a FDIR concept usually follows a hierarchical
approach, in this paper we will indicate a FDIR and safeguarding
hierarchy example in the paper. In this structure we will indicate
the levels of failures which handled by unit internal, subsystem
software, satellite system software, onboard computer hardware
reconfiguration unit and ground. Also we will explain the FDIR
hierarchy in safe mode implementation in a bit more detail.
In this paper we will consider FDIR technologies in the On-board
software in a satellite. Today, there are several proposed
methodologies and frameworks which try to solve this problem.
We will analyze the functionalities in FDIR Module implemented
in an OBSW Framework. Also we have a survey on the FDIR
hierarchies and their relationship to the Packet Utilization
Standard (PUS) Services. | | Elektron variant | Elektron variant |
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