Investigation on the Method of Blade Synchronous Vibration Parameter Identification (Simulation)

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (17) : 120-126.

Weimin Wang Sanqun Ren Lifang Chen Shan Huang

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Abstract

A new method used to identify the blade synchronous vibration parameters based on the blade tip-timing method and previous research in the actual environment. According to the relationship between the rotation speed and the blade vibration displacement, the parameters such as the frequency of resonance center, the amplitude of blade vibration, the initial phase are obtained by the nonlinear least square fitting algorithm. The blade assembly is operated at constant which is near the frequency of resonance center. Different blade vibration displace can be obtained by the sensors at different position, and the blade synchronous vibration Engine Order (EO) can be obtained by Global Autoregressive with Instrumental Variables (GARIV) method. The Campbell diagram of blade synchronous vibration can be made by parameters obtained by GARIV method and the sweep frequency fitting method. Verification of the method will provided in the latter experimental paper.

Key words

turbine blades / synchronous vibration / parameter identification / Blade Tip-Timing / GARIV method

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Weimin Wang Sanqun Ren Lifang Chen Shan Huang. Investigation on the Method of Blade Synchronous Vibration Parameter Identification (Simulation)[J]. Journal of Vibration and Shock, 2017, 36(17): 120-126

References

[1] Pickering T M. Methods for validation of a turbomachinery rotor blade tip timing system[D]. Blacksburg: Blacksburg Virginia Tech University, 2014.
[2] Abdelrhman A M, Hee L M, Leong M S, et al. Condition monitoring of blade in turbomachinery: A review[J]. Advances in Mechanical Engineering, 2014(2014).
[3] Dimitriadis G, Carrington I B, Wright J R, et al. Blade-tip timing measurement of synchronous vibrations of rotating bladed assemblies[J]. Mechanical Systems & Signal Processing, 2002, 16(4): 599-622.
[4] Heath S. A new technique for identifying synchronous resonances using tip-timing[J]. Journal of Engineering for Gas Turbines and Power, 2000, 122: 219-225.
[5] 欧阳涛. 基于叶尖定时的旋转叶片振动检测及参数辨识技术[D]. 天津: 天津大学, 2011.
OUYANG Tao. Rotating Blade Vibration Detection and Parameters Identification Technique Using Blade Tip-Timing[D]. Tianjin: Tianjin University, 2011.
[6] Robinson W, Washburn R. A real time non-interference stress measurement system (NSMS) for determining aero engine blade stresses[C]//Proceedings of the 37th Symposium of the Instrumentation Society of America, San Diego, California. 1991: 91-103.
[7] Carrington I B. Development of blade tip timing data analysis techniques[D]. Manchester: University of Manchester, 2002.
[8] 欧阳涛, 郭文力, 段发阶, 等. 基于叶尖定时的旋转叶片同步振动辨识新方法[J]. 振动与冲击, 2011, 30(08): 249-252.
OUYANG Tao, GUO Wenli, DUAN Fajie, et al. New method for identifying rotating blades synchronous vibration based on tip-timing[J]. Journal of Vibration and Shock, 2011, 30(08): 249-252.
[9] Freund O, Montgomery M, Mittelbach M, et al. Non-contact test set-up for aeroelasticity in a rotating turbomachine combining a novel acoustic excitation system with tip-timing[J]. Measurement Science and Technology, 2014, 25(3): 116-121.
[10] 张光澄. 非线性最优化计算方法[M]. 北京: 高等教育出版社. 2005. 159-169.
ZHANG GuangCheng. Computational method for nonlinear optimization[M]. Beijing: Higher Education Press. 2005, 159-169.