Analysis of failure frequency and failure rate of RF/ antenna subsystems for an earth station system
During the system design process, telecommunications engineers usually identify failure rate and failure in time (FIT) values when stipulating subsystems or components in an earth station system. Failure rates are hardly revealed by vendors as time-dependent values. Therefore, they must be cautiou...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Anka Publishers
2022
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/100828/7/100828_Analysis%20of%20failure%20frequency%20and%20failure%20rate.pdf http://irep.iium.edu.my/100828/ https://www.neuroquantology.com/article.php?id=7445 |
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| Summary: | During the system design process, telecommunications engineers usually identify failure rate and failure
in time (FIT) values when stipulating subsystems or components in an earth station system. Failure rates
are hardly revealed by vendors as time-dependent values. Therefore, they must be cautiously assessed
when used in reliability analysis. Most vendors share this information as Mean Time Before Failure (MTBF)
which is a general figure for equipment to indicate a failure. In this paper, the external factors, such as
power supply issues, lightning strike and human error were not considered. The failure frequency and
failure rate are crucial for engineers to identify which subsystem always fails and which is not. In this
paper, the analysis of failure rate and failure frequency were simulated based on the data provided by
MEASAT for the RF/Antenna subsystems of an earth station system. Then, from this analysis, the
engineers can design a back-up plan to make sure that the transmission is not disrupted. The parallel
configuration was also adopted in this research consisting of 2-parallel, 3-parallel, and 4-parallel
configurations. From this analysis, it can be concluded that the 2-parallel configuration yields the highest
total failure frequency with 13 failures at MTBF of 10th year. In turn, the HPA subsystem was identified to
have the highest number of failures as compared to other subsystems in each configuration because it
was sensitive to lighting strikes. Furthermore, the total failure rate gradually decreased as the MTBF
increased because the number of failure frequency was low at each MTBF for each subsystem in each
configuration. |
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