DocumentCode :
497260
Title :
Analysis of the Tip-Timing Precision of Double-Shielded Capacitive Pulse Sensor
Author :
Duan Fajie ; Li Menglin ; Tao, Ouyang ; Kong Xianghong
Author_Institution :
State Key Lab. of Precision Meas. Technol. & Instrum., Tianjin Univ., Tianjin, China
Volume :
1
fYear :
2009
fDate :
11-12 April 2009
Firstpage :
81
Lastpage :
84
Abstract :
A Double-Shielded Capacitive Pulse Sensor designed for the measurement of blade tip clearance and blade time of arrival is introduced combined with its post-circuit. On the basis of research, the accuracy of measurement concerns with the tip-timing precision of the sensor which is determined by the zero-crossing point of the signal. As the influence factors of the precision, the discussion about the mathematical model of bipolar pulse signal and cybernetics model of circuit are with application to design the post-circuit, furthermore, the analysis of the signalpsilas spectrum and impulse response of circuit system are used for the optimization of the bandwidth. With the comparison of the simulation results in different bandwidth, the evidences to the system design are present in the paper. A dynamical testing experiment prepared for the verification of accuracy shows the output of Double-Shielded Capacitive Pulse Sensor featured with appropriate bandwidth and rapid response.
Keywords :
capacitive sensors; bipolar pulse; blade vibration; double-shielded capacitive pulse sensor; tip-timing precision; Bandwidth; Blades; Capacitive sensors; Cybernetics; Mathematical model; Pulse circuits; Pulse measurements; Signal analysis; Signal design; Time measurement; bipolar pulse; blade tip-timing precision; blade vibration; capacitive sensor; circuit model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Measuring Technology and Mechatronics Automation, 2009. ICMTMA '09. International Conference on
Conference_Location :
Zhangjiajie, Hunan
Print_ISBN :
978-0-7695-3583-8
Type :
conf
DOI :
10.1109/ICMTMA.2009.589
Filename :
5202918
Link To Document :
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