Fault-Tolerant FPGA-based controllers in factory automation
| Autor: | Hassanein H. Amer, Malak Y. ElSalamouny, Ramez M. Daoud, Gehad I. Alkady, Ihab Adly |
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| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
business.product_category business.industry Computer science Reliability (computer networking) 020208 electrical & electronic engineering Control reconfiguration Fault tolerance 02 engineering and technology Automation 020901 industrial engineering & automation Control theory Control system Embedded system 0202 electrical engineering electronic engineering information engineering Transient (computer programming) Network switch business |
| Zdroj: | MECO |
| DOI: | 10.1109/meco.2017.7977160 |
| Popis: | Nowadays, FPGA-based Networked Control Systems (NCSs) are frequently used. Transient and permanent faults occur often as a result of radiation in industrial environments. Accordingly, Fault-Tolerant (FT) FPGA-based NCSs are desired. In this paper, an NCS model is proposed composing of In-Loop and S2A architectures linked via an Ethernet switch. This architecture is used in shape detection machines with vision sensing requirements. FT techniques are applied in the controller nodes of the system along with Dynamic Partial Reconfiguration (DPR) for FPGA-based controller recovery. The reliability of the system due to changes in both the recovery rate and the conditional probability of failure occurrence (either transient or permanent), is presented in this paper. Accordingly, a Markov model is constructed for reliability calculations. A case study is used to illustrate the use of such a model to choose appropriate maintenance strategies as well as a quantitative measure for the ability of the FT techniques to increase system reliability. |
| Databáze: | OpenAIRE |
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