Internal sensing and actuation strategies for smart machine rotors

Samuel Jiménez, Patrick Keogh, Matthew Cole

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The use of rotor-mounted sensors and actuators in active vibration control of rotating machinery has the potential to overcome certain limitations of conventional stator-mounted components. A test system has been constructed to evaluate internal sensing and actuation strategies, where components are mounted within a hollow-shaft rotor. MEMS accelerometers are used to measure the vibration-induced acceleration of the rotor centre in the rotating frame of reference. With appropriate calibration and processing, this data can be used as a substitute for rotor displacement measurements. The results presented show how measurement accuracy tends to increase with rotational speed. As the accelerometers are located within the rotating reference frame, identification of the magnitude and phase of the rotor unbalance can be performed directly without the need for correlating fixed frame measurements with timing marks. Experimental results for sub-critical operation of the test system and comparison with theoretical predictions show the effectiveness of the system.

Original languageEnglish
Title of host publicationProceedings of the 9th IFToMM International Conference on Rotor Dynamics
Subtitle of host publicationPart XII
Place of PublicationSwitzerland
PublisherSpringer
Pages1527-1537
Number of pages11
ISBN (Print)9783319065892
DOIs
Publication statusPublished - 2015
Event9th IFToMM International Conference on Rotor Dynamics, 2014 - Milan, Italy
Duration: 22 Sep 201425 Sep 2014

Publication series

NameMechanisms and Machine Science
Volume21

Conference

Conference9th IFToMM International Conference on Rotor Dynamics, 2014
CountryItaly
CityMilan
Period22/09/1425/09/14

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Jiménez, S., Keogh, P., & Cole, M. (2015). Internal sensing and actuation strategies for smart machine rotors. In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics: Part XII (pp. 1527-1537). (Mechanisms and Machine Science; Vol. 21). Switzerland: Springer. https://doi.org/10.1007/978-3-319-06590-8_125