СТУПІНЬ ВІДПОВІДНОСТІ ТЕХНОЛОГІЧНОГО ПРОЦЕСУ НОРМІ ЯК ПОКАЗНИК ФУНКЦІОНАЛЬНОЇ БЕЗПЕКИ
The analysis of the standard for functional safety was done. The numerical assessment of the level of safety completeness of technological processes and equipment under control (EUC)] for non-diagnosed random failures is made in accordance with the standard at the design stage using probabilistic me...
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| Datum: | 2025 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
V.M. Glushkov Institute of Cybernetics of NAS of Ukraine
2025
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| Schlagworte: | |
| Online Zugang: | https://jais.net.ua/index.php/files/article/view/684 |
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| Назва журналу: | Problems of Control and Informatics |
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Problems of Control and Informatics| Zusammenfassung: | The analysis of the standard for functional safety was done. The numerical assessment of the level of safety completeness of technological processes and equipment under control (EUC)] for non-diagnosed random failures is made in accordance with the standard at the design stage using probabilistic methods. The purpose of the work is the development of numerical evaluation methods at the operational stage of the safety level of the technological process and equipment under control by diagnosed failures at any given time or for a given time interval. It is assumed that the level of functional safety of the process and the equipment under control is the highest when the monitored parameter is equal to its nominal value and is 0 when the monitored parameter leaves the tolerance limits, i.e. on failure. In this work, it is proposed to evaluate (diagnose) the functional safety of the process and the equipment under control in one tolerance zone by one parameter as the inversion of the module of the weighted deviation of the monitored value from its nominal value. A band window with weight power parabolic functions is used. The functional safety of the inertial process for one parameter is calculated as the average current sum of safety factors of each sample of the parameter being diagnosed. For a multiparameter process, the functional safety factor is equal to the product of the functional safety factors of each diagnosed parameter. The proposed approach allows to evaluate the functional safety of the process and the equipment under control at the operation stage at any given time or for a given time interval as a single number, with the coefficient of the highest level of safety equal to 1, when the level of safety decreases, the coefficient decreases while the failure the coefficient is equal to zero. |
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