A novel method for the design of proximity sensor configuration for rotor blade tip timing

Loading...
Thumbnail Image

Authors

Diamond, D.H. (David)
Heyns, P.S. (Philippus Stephanus)

Journal Title

Journal ISSN

Volume Title

Publisher

American Society of Mechanical Engineers

Abstract

Blade tip timing (BTT) is a noncontact method for measuring turbomachinery blade vibration. Proximity sensors are mounted circumferentially around the turbomachine casing and used to measure the tip displacements of blades during operation. Tip deflection data processing is nontrivial due to complications such as aliasing and high levels of noise. Specialized BTT algorithms have been developed to extract the utmost amount of information from the signals. The effectiveness of these algorithms is, however, influenced by the circumferential spacing between the proximity sensors. If the spacing is suboptimal, an algorithm can fail to measure dangerous blade vibration. This paper presents a novel optimization approach that determines the optimal spacing between proximity sensors.

Description

Keywords

Blade tip timing (BTT), Turbomachinery blade vibration

Sustainable Development Goals

Citation

Diamond, D.H. & Heyns, P.S. 2018, 'A novel method for the design of proximity sensor configuration for rotor blade tip timing', Journal of Vibration and Acoustics, vol. 140, no. 6, pp. 1-8.