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Fault Detection Evaluation of Microcontroller Dyad Control System by Fault Injection Method


Hocenski, Željko; Martinović, Goran
Fault Detection Evaluation of Microcontroller Dyad Control System by Fault Injection Method // Proceedings of the 8th European onference on Power Electronics and Applications
Laussanne: European Power Electronics Association, 1999. str. P.1-P.9 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Fault Detection Evaluation of Microcontroller Dyad Control System by Fault Injection Method

Autori
Hocenski, Željko ; Martinović, Goran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 8th European onference on Power Electronics and Applications / - Laussanne : European Power Electronics Association, 1999, P.1-P.9

Skup
8th European Conference on Power Electronics and Applications

Mjesto i datum
Laussanne, Švicarska, 7-9.09.1999

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Sažetak
The fault detection methods are very important in the fault-tolerant system design. The redundancy is the basis for the fault tolerance, but it is used in the fault detection also. One of the basic fault detection methods is the duplication with comparing. The duplication could be done on several levels in hardware and software. The control system based on microcontrollers in dyad are presented in this paper. The microcontrollers in dyad are used for increased reliability and fault tolerance. They are loosely coupled with task synchronization at checkpoints. The results of operation are exchanged and compared at a checkpoint. Depending on two types of software the behavior of such duplicated system could be done for the increased availability or for the increased safety. By the safe application both units must reach an agreement at each checkpoint, otherwise the system outputs will be disabled. In a highly available application a valid unit continues to work after disagreement at a checkpoint. Therefore both units must have the self-checking capabilities. The evaluation of used fault detection methods and fault tolerance is done by experiments using the fault injection method. The fault injection system is based on a personal computer, which controls the experiment and collects the results. The bus signals activity is used in calculation of the probability of the fault occurrence. The fault recovery coverage is evaluated based on the registered number of faults and the probability of the fault occurrence

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika



POVEZANOST RADA


Projekt / tema
036006

Ustanove
Fakultet elektrotehnike i računarstva, Zagreb