| Research Article |
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Prognostics health management system for FAST actuators |
| LEI Zheng1,2, JIANG Peng1,2, WANG Qiming1,2 |
1. National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100101, China;
2. Key Laboratory of FAST, National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100101, China |
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Abstract The observation of FAST is beset by the long fault maintenance cycle of actuators. To solve this problem, a prognostics health management (PHM) system is designed. First, the health status of the actuator is evaluated using real-time operational data. Second, based on the evaluation results, the causes of actuator fault can be identified, and the residual life of actuator can be predicted. Finally, the optimal maintenance strategy is provided. The repair efficiency can be increased via the fault diagnosis system. Moreover, the residual life of the actuator parts can be predicted using the remaining life prediction system. The maintenance mode could also be improved from passive to active, and condition-based maintenance can be realized to reduce the mean time to repair and improve the reliability of the actuator. The PHM system could be used as guidance for the problem of the actuator of FAST. Additionally, it could be used as a reference for similar system maintenance research.
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| Keywords
actuator of FAST
PHM system
residual life prediction
condition-based maintenance
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Issue Date: 19 October 2022
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2022,
Vol. 62
