Blade resonance parameter identification based on tip-timing method without the once-per revolution sensor

被引：85
|
作者：
Guo, Haotian [1 ]
Duan, Fajie [1 ]
Zhang, Jilong [1 ]
机构：
[1] Tianjin Univ, State Key Lab Precis Measuring Technol & Instrume, Tianjin 300072, Peoples R China
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2016年 / 66-67卷
关键词：
Blade tip-timing; Blade vibration; Parameter identification; VIBRATION MEASUREMENTS; DAMAGE;
D O I：
10.1016/j.ymssp.2015.06.016
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Blade tip-timing is the most effective method for blade vibration online measurement of turbomachinery. In this article a synchronous resonance vibration measurement method of blade based on tip-timing is presented. This method requires no once-per revolution sensor which makes it more generally applicable in the condition where this sensor is difficult to install, especially for the high-pressure rotors of dual-rotor engines. Only three casing mounted probes are required to identify the engine order, amplitude, natural frequency and the damping coefficient of the blade. A method is developed to identify the blade which a tip-timing data belongs to without once-per revolution sensor. Theoretical analyses of resonance parameter measurement are presented. Theoretic error of the method is investigated and corrected. Experiments are conducted and the results indicate that blade resonance parameter identification is achieved without once-per revolution sensor. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：625 / 639
页数：15
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