Crack Monitoring in Rotating Shaft Using Rotational Speed Sensor-Based Torsional Stiffness Estimation with Adaptive Extended Kalman Filters

Autor:	Young-Hun Park, Hee-Beom Lee, Gi-Woo Kim
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	crack monitoring rotating shaft torsional stiffness estimation rotational speed sensors adaptive extended Kalman filter forgetting factor update Chemical technology TP1-1185
Zdroj:	Sensors, Vol 23, Iss 5, p 2437 (2023)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s23052437
Popis:	In this study, we present an alternative solution for detecting crack damages in rotating shafts under torque fluctuation by directly estimating the reduction in torsional shaft stiffness using the adaptive extended Kalman filter (AEKF) algorithm. A dynamic system model of a rotating shaft for designing AEKF was derived and implemented. An AEKF with a forgetting factor (λ) update was then designed to effectively estimate the time-varying parameter (torsional shaft stiffness) owing to cracks. Both simulation and experimental results demonstrated that the proposed estimation method could not only estimate the decrease in stiffness caused by a crack, but also quantitatively evaluate the fatigue crack growth by directly estimating the shaft torsional stiffness. Another advantage of the proposed approach is that it uses only two cost-effective rotational speed sensors and can be readily implemented in structural health monitoring systems of rotating machinery.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/97ea9353fe344ad0a61e58f77861093a Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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