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Tatar, Kourosh
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Tatar, K. & Gren, P. (2016). Estimation of the in-plane vibrations of a rotating spindle, using out-of-plane laser vibrometry measurements. Mechanical systems and signal processing, 72-73, 660-666
Open this publication in new window or tab >>Estimation of the in-plane vibrations of a rotating spindle, using out-of-plane laser vibrometry measurements
2016 (English)In: Mechanical systems and signal processing, ISSN 0888-3270, E-ISSN 1096-1216, Vol. 72-73, p. 660-666Article in journal (Refereed) Published
Abstract [en]

A method for estimating the in-plane vibrations of a rotating spindle using out-of-plane laser vibrometry measurements is described. This method enables the possibility to obtain the two orthogonal radial vibration components of a rotating spindle. The method uses the fact that the laser vibrometer signal is a total surface velocity of the measurement point in the laser direction.

Measurements are conducted on a rotating milling machine spindle. The spindle is excited in a controlled manner by an active magnetic bearing and the response is measured by laser vibrometer in one of the two orthogonal directions and inductive displacement sensors in two orthogonal directions simultaneously. The work shows how the laser vibrometry crosstalk can be used for resolving the in-plane vibration component, that is the vibrations in the laser vibrometer cross direction. The result is compared to independent measurement signals from the displacement sensors.

The measurement method can be used for vibration measurements on rotating parts, for example, where there is lack of space for orthogonal measurements.

Keywords
Laser vibrometry, Ceosstalk, Speckle noise, In-plane vibrations, Spindle vibrations
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:hig:diva-20985 (URN)10.1016/j.ymssp.2015.11.023 (DOI)000369196200040 ()2-s2.0-84955689577 (Scopus ID)
Funder
The Kempe Foundations
Available from: 2016-01-09 Created: 2016-01-09 Last updated: 2018-03-13Bibliographically approved
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