Blade tip timing measurement systems (BTT) are used to perform measurement of blade tip deflection samples. Depending on sensors, data acquisition system, measurand and measurement environment, machine characteristics, data processing techniques, displacement samples can be obtained with a certain uncertainty level. This paper analyzes the theoretical relationship between measurand parameter, sensor characteristics and uncertainty level. Currently a comparison with strain gauge measurements has been performed to verify the performance of BTT measurement systems. Here the design of a new calibration test bench is proposed that can assure a better reference for the evaluation of the measurement system accuracy. This work is in a first stage of a recently started European Union (EU) funded project with the goal to develop new sensors, data processing, and calibration methods for BTT measurement systems.
Design of blade tip timing measurements sistems based on uncertainty analysis
ROSSI, Gianluca;
2012
Abstract
Blade tip timing measurement systems (BTT) are used to perform measurement of blade tip deflection samples. Depending on sensors, data acquisition system, measurand and measurement environment, machine characteristics, data processing techniques, displacement samples can be obtained with a certain uncertainty level. This paper analyzes the theoretical relationship between measurand parameter, sensor characteristics and uncertainty level. Currently a comparison with strain gauge measurements has been performed to verify the performance of BTT measurement systems. Here the design of a new calibration test bench is proposed that can assure a better reference for the evaluation of the measurement system accuracy. This work is in a first stage of a recently started European Union (EU) funded project with the goal to develop new sensors, data processing, and calibration methods for BTT measurement systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
