Vibration Self-synchronous Study of Wind Turbine Blade Single-point Fatigue Loading Test System#br#
ZHANG Leian123 WANG Zhongbin2 LIU Weisheng3 HUANG Xuemei1
1.College of Mechanical Engineering, Shandong University of technology, Zibo, 255091, China；
2. School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221116,China；
3.Lianyungang Zhongfu Lianzhong Composite Group Co.，Ltd，Lianyungang，222000，China
Abstract：For the self-synchronous vibration phenomenon in the process of the single-point fatigue loading test of wind turbine blade, the mathematical model of the single-point fatigue loading system based on LaGrange equation was established and the influence factors of the self-synchronous vibration phenomenon were obtained. Applying the phase plane method, the vibration system is converted into an autonomous system. Then the vibration system’s simulation model was built with Matlab/Simulink and the basic law of the self-synchronous vibration phenomenon in different initial phase was obtained. At last, a set of single-point fatigue loading test equipment which was used to test the accuracy of the mathematical model and simulation model was set up. The experimental results shows that under the premise of load source rotary drive frequency the same as the blade’s natural frequency, the self-synchronous vibration phenomenon occurs when the initial phase difference is less than and in this state, the amplitude of blade is the largest and constant; when the initial phase difference is , the self-synchronous vibration phenomenon is weak, and the amplitude of the blade gradually stabilizes at a low value after a period of time; when the initial phase difference is , the self-synchronous vibration phenomenon do not occur and the amplitude of blade is disorder. The above conclusion provide theoretical basis for the control algorithm of fatigue loading test.
[1] Anderson R G, Lorenz R. Web Machine Coordinated Motion Control Via Electronic Line-shafting [J].IEEE Transactions on Industry Application，2001,37(1):247-254.
[2] 李小号，刘杰，刘劲涛. 单质体非线性系统谐波锐共振的谐振同步分析[J].机械工程学报，2010,46(1): 86-91.
Li Xiaohao, Liu Jie, Liu Jintao. Analysis of harmonic oscillation synchronization for the single-mass nonlinear system under harmonic wave sharp resonance condition[J]. Journal of Mechanical Engineering, 2010,46(1): 86-91.
[3] Abdelghani Z D, Dane Q. Resonance Capture in aDampedThree Degree of Freedom System: Experimental and Analytical Comparison [J]. International Journal of Non-Linear Mechanics,2009,39:1128-1142.
[4] Cusumano P, Chatterjee A. A Dynamical Systems Approach to Damage Evolution Tracking. Part1: Description and Experimental Application [J]. Journal of Vibration and Acoustics, 2012,124(2): 250-257.
[5] Boccaletti S，Bragard J，Arecchi F T. Synchronization in Non-identicalExtended Systems[J]. Physical Review Letters, 2013, 16(3):287-294.
[6] Suykens J A，Gestel T V, Brabanter J D. Least Squares Support Vector Machine[M]. Singapore: World Scientific,2009，8(7):134-141.
[7] Zhang T X, Wen B C, Fan J. Study on Synchronization of Two Eccentric Rotors Driven by Hydraulic Motors in One VibratingSystems[J]. Shock and Vibration,2011,4(6): 305-310.
[8] 李小号，刘杰，刘劲涛，李允公.单质体非线性系统的锐共振振动自同步研究[J].工程设计学报，2012,15(6):418-421.
Li Xiaohao, Liu Jie, Liu Jintao, et al. Research on vibration synchronization of single-mass nonlinear system under sharp resonance condition[J]. Journal of Engineering Design, 2012,15(6):418-421.
[9] 韩清凯，杨晓光，秦朝烨，等.激振器参数对振动自同步振动系统的影响[J]. 东北大学学报（自然科学版），2013,28(7):1009-1013.
Han Qingkai, Yang Xiaoguang, Qin Zhaoye, et al. Effects of Exciter Parameters on Self-Synchronous Vibration System[J]. Journal of Northeastern University (Natural Science), 2013,28(7):1009-1013.
[10] 张楠，候晓林，闻邦椿.偏移式自同步振动机的同步特性[J].东北大学学报（自然科学版），2009, 30(9): 1302-1309.
Zhang Nan, Hou Xiaolin, Wen Bangchun. Characteristics of Synchronization for Self-Synchronous Vibration Machine with Center of Mass Deviated Vibrator[J]. Journal of Northeastern University (Natural Science), 2009, 30(9): 1302-1309.
[11] 来鑫,乌建中,王伟达,阮博.多锤联动系统的振动耦合理
论及试验研究[J].机械工程学报，2012，48(3):108-114.
Lai Xin, Wu Jianzhong, Wang Weida, et al. Theoretical and Experimental Study on Electromechanical Coupling of Joint Pile-hammer System[J]. Journal of Mechanical Engineering, 2012,48(3):108-114.
