Thesis (MScIng)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: This dissertation's research aims at studying the viability of using both low cost
consumer Commodity Off The Self (COTS) PCs and libn~software in implementing a
distributed real-time system modeled on a real-world engineering problem.
Debugging and developing a modular satellite system is both time consuming
and complex, to this end the SUNSATteam has envisioned the Interactive Test System
that would be a dual mode simulator/monitoring system. It is this system that requires
a real-time back-end and is used as a real world problem model to implement.
The implementation was accomplished by researching the available parallel processing
software and real-time extensions to GNU/Linux and choosing the appropriate
solutions based on the needs of the model. A monitoring system was also implemented,
for system verification, using freely available system monitoring utilities.
The model was successfully implemented and verified with a global synchronization
of < 10ms. It was shown that GNU/Linux and libn~ software is both mature
enough and appropriate in solving a real world distributed real-time problem. / AFRIKAANSE OPSOMMING: Die tesis se navorsing is daarop gemik om die toepaslikheid van beide lae koste verbruikers
Komoduteits Van Die Rak (KVDR)persoonlike rekenaars en vemiet sagteware
in die implementasie van verspreide intydse stelsels te ondersoek aan die hand van die
oplossing van 'n gemodelleerde ingenieurs probleem.
Die ontfouting en ontwikkeling van 'n modulere satelliet is beide tyd rowend en
kompleks, om hierdie te vergemaklik het die SUNSAT span die Interaktiewe Toets
Stelsel gekonseptualiseer, wat in wese'n dubbel modus simulator/moniteerings stelsel
sou wees. Dit is hierdie stelsel wat 'n verspreide intydse onderstel benodig en dien as
die regte wereld probleem model om op te los.
Die implementasie is bereik deur die beskikbare verspreide verwerkings sagteware
en intydse uitbreidings vir GNU/Linux te ondersoek en die toepaslike opsies te
kies gegrond op die behoeftes van die model. 'n Moniteerings stelsel is ook geimplimenteer,
met behulp van libn~sagteware, vir stelsel verifikasie.
Die model was suksesvol geimplimenteer en geverifieer met 'n globale sinkronisasie
van < 10ms. Daar is getoon dat GNU/Linux en libn~sagteware beide volwaardig en
geskik is vir die oplossing van regte wereld verspreide intydse probleme.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/49933 |
| Date | 03 1900 |
| Creators | Van Schalkwyk, Dirko |
| Contributors | Du Plessis, J. J., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | 1 v. (various foliations) : ill. |
| Rights | Stellenbosch University |
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