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METHODOLOGY FOR DETERMINING THE RELIABILITY OF FAULT-
TOLERANT HARDWARE-SOFTWARE RADIOELECTRONIC SYSTEMS
Volochiy Bogdan, Doctor of Science (Technics), Professor; Ozirkovskyy Leonid,
Candidate of Science (Technics), Associate Professor; Panskyi Taras, Postgraduate Student; Mulyak Oleksandr, Postgraduate Student
Lviv National Polytechnic University, Lviv, Ukraine

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1. . . - : / . . . . : , 2005. 479 . ISBN 5-469-00102-4. [Publ.l
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2. . . / K. A. , . . . . : - , 1989. 144 . ISBN 57035-0004-4
3. . . / . . . : - , 2004. 220.
4. . . / . . , . . // . 2012. 4. 3 . [Publ.]
5. Friedman M. A. Reliability techniques for combined hardware and software systems / M. A. Friedman, P. Y. Tran, P. L. Goddard ; Final technical report ; Rome Laboratory Air Force Systems Command, Griffiss Air Force Base. New York. 1992. 286 p. rPubl.l
6. Luy M. R. Handbook of software reliability engineering / M. R. Luy. Ca. : IEEE Computer Society Press, 1996. rPubl.1
7. Musa J. D. Software Reliability Models: Concepts, Classification, Comparisons, and Practice / J. D. Musa, K. Okumoto // Electronic Systems Effectiveness and Life Cycle Costing. 1983. Vol. 3. p. 395423.
8. Bohdan V. The software for the analysis of reliability of fault-tolerant radio-electronic systems / B. Volochiy, L. Ozirkovskyy, P. Klochko // Uradzenia i systetemy radioelektroniczne UiSR09 : III Konferencja naukowa, 23-25 wresnia 2009 / Wojskowa Akademia Techniczna. Soczewka, 2009.
9. . / . , . , . , . // , (-2009) : IV - , 8-10 2009 / . . .19.
References
1. Cherkasov G. N. (2005) Nadezhnost aparatno-programnykh kompleksov [Reliability hardware and software systems]. SPb., Piter Publ. 479 p. Available at: [Publ.1
2. Iyudu K. A., Krivoshchekov S. A. (1989) Matimaticheskie modeli otkazoustoichevykh vychislitelnykh system [Mathematical models of fault-tolerant computing systems]. oskow, ! Publ., 144 p. - ISBN 5-7035-0004-4
3. Volochiy B. Y. (2004) Tekhnolohiia modeliuvannia alhorytmiv povedinky informatsiinykh system [Technology modeling algorithm of information systems]. Lviv, Lviv Polytechnic National University Publ., 220 p.
4. Chernov A. V., Parashhenko I. G. (2012) Klassifikacija modelej nadezhnosti programmnogo obespechenija [Classification of software reliability models]. Inzhenernyj vestnikDona. No 4, 3 p. - Available at: [Publ.]
5. Friedman M. A., Tran P. Y., Goddard P. L. (1992) Reliability techniques for combined hardware and software systems. Air Force Systems Command, Griffiss Air Force Base, New York. 286 p. [Publ.]
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8. Bohdan V., Ozirkovskyy L., Klochko P. (2009) The software for the analysis of reliability of fault-tolerant radio-electronic systems. Uradzenia i systetemy radioelektroniczne UiSR09. Soczewk, Wojskowa Akademia Techniczna.
9. Mandziy B., Volochiy B., Ozirkovskyy L., Klochko P. (2009) Avtomatyzacija modeljuvannja povedinky radioelektronnyh informacijnyh system [Computer-aided
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simulation of the behavior of electronic information systems]. Modern Problems of Radio Engineering, Telecommunications and Instrumentation (SPRTP-2009). Vinnitsa, p.19.
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Volochiy B. Y., Ozirkovskyy L. D., Panskyi T. I., Mulyak O. V. Methodology for determining the reliability of fault-tolerant hardware-software radioelectronic systems.
Introduction. The majority of radioelectronic systems are hardware-software systems. Their reliability is defined as the reliability of hardware and software. Methods for estimating software allow to predict reliability based on experiments and tests during the testing verification and validation time, but there is no specific models for assessing the reliability during operation time.
Problem statement. In many approaches, when assessing the reliability of hardware-software systems consider that software reliability is equal to 1, and consider only reliability of hardware. In other approaches consider that the reliability of PAS depends on the software and hardware reliability. Hardware and software features differ significantly. Important is to create methodology for determining the reliability of hardware-software systems considering hardware and software adequate models.
Developing software reliability models. Was carried out the analysis of software reliability models according to its life cycle. Software reliability model in operation time is proposed as a set of Heaviside functions.
Developing hardware reliability models. Was carried out the analysis of hardware reliability according to the technology [3].
Developing software-hardware reliability models. Was carried out the analysis of software-hardware systems considering the reliability of hardware and software during operation time.
Keywords: reliability, hardware-software system, hardware, software, fault tolerant systems.
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