Ponochovnyi, Y. L.Makhmudov, H. Z.Поночовний, Юрій ЛеонідовичМахмудов, Ханлар Зейналович2026-02-122026-02-122025-07-03Models for Assessing the Dependability of Programmable Devices with Controlled Multi-Level Degradation / V. Kharchenko et. al. In: Zamojski, W., Mazurkiewicz, J., Sugier, J., Walkowiak, T., Kacprzyk, J. (eds) Advances in Dependable Systems and Networks. DepCoS-RELCOMEX. 2025. Lecture Notes in Networks and Systems, vol 1427. Springer, Cham. Pp. 85-95.978-3-031-92734-https://doi.org/10.1007/978-3-031-92734- 8_9https://dspace.pdau.edu.ua/handle/123456789/20519This paper explores the dependability and availability of programmable devices (PDs) with controlled multilevel degradation using Markov models. It presents a classification of single-fragment and multi-fragment models based on key parameters influencing failure rates and reconfiguration capabilities for PDs. The study develops a Markov availability model for PDs, detailing state transition matrices and simulation methods in MATLAB. Three PD models are considered: a single-fragment model, a multi-fragment model with degradation, and a multi-fragment model with degradation and reconfiguration. The simulation results demonstrate how reconfiguration and degradation affect system availability over extended operational periods. A comparison of availability functions across the models illustrates the effects of degradation and reconfiguration, delivering key findings for improving PD resilience in critical applications within harsh settings.enArticle