Real-time bilevel algorithm for blade tip clearance and tip timing estimation in aircraft engines
An efficient algorithm is presented for determining the arrival and departure timestamps of rotating blades in aircraft engines using fiber-based optical probes. This approach leverages the bistable characteristics of optical waveforms to optimize a state-level estimator, computing arrival and depar...
| Autores: | , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universidad del País Vasco |
| Repositorio: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/75008 |
| Acesso em linha: | http://hdl.handle.net/10810/75008 |
| Access Level: | acceso abierto |
| Palavra-chave: | aero engine condition monitoring blade tip clearance blade tip timing fiber optic-based displacement sensor bilevel detection algorithm |
| Resumo: | An efficient algorithm is presented for determining the arrival and departure timestamps of rotating blades in aircraft engines using fiber-based optical probes. This approach leverages the bistable characteristics of optical waveforms to optimize a state-level estimator, computing arrival and departure times from mid-level crossings. This eliminates the need for time-consuming signal processing techniques. To validate this method, several bench tests have been conducted on an industrial fan and two different engines. The results demonstrate its suitability for real-time implementation and its effectiveness in estimating blade tip clearance and timing for vibrational analysis, achieving computational times well below 40% of the acquisition times. |
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