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- 2016
基于传递函数有理分式的模态参数识别算法研究
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Abstract:
为降低多参考点模态参数识别过程中系数矩阵的计算精度损失,利用传递函数有理分式模型,在正交多项式识别算法的基础上提出一种改进的模态参数识别方法,并给出该算法的实现流程和稳定图的建立方法;通过实测算例对所提出的方法进行验证。结果表明,该方法有效地识别模态参数,并简化参数的计算过程,提高识别效率。该结论将对采用模态参数识别结构的完整性研究提供借鉴。
[1] | CLOUGH R W, PENZIEN J. 结构动力学[M]. 王光远译. 北京: 高等教育出版社, 2006. CLOUGH R W, PENZIEN J. Structural dynamics[M]. Translated by WANG Guang-yuan. Beijing: Higher Education Press, 2006. |
[2] | RICHARDSON M H. Global frequency & damping estimates from frequency response measurements[C]//Proceedings of the 4th International Modal Analysis Conference. Los Angeles, USA: Society for Experimental Mechanics, 1986. |
[3] | 张力. 模态分析与实验[M]. 北京:清华大学出版社, 2011. ZHANG Li. Modal analysis and experiment[M]. Beijing: Tsinghua University Press, 2011. |
[4] | CHEN K F, JIAO Q Y, SHEN Y H. On the frequency mapping of modal parameters identification[J]. Mechanical Systems and Signal Processing, 2010, 21(4): 1667-1673. |
[5] | 王彤, 张令弥. 运行模态分析的频域空间域分解法及其应用[J] . 航空学报, 2006, 27(1): 62-66. WANG Tong, ZHANG Ling-mi. Frequency and spatial domain decomposition for operational modal analysis and its application[J]. Journal of Aeronautics, 2006, 27(1): 62-66. |
[6] | PINTELON R. Frequency-domain subspace system identification using non parametric noise models[J]. Automatica, 2008, 38(8): 1295-1311. |
[7] | GUILLAUME P, VERBOTEN P, VAN LANDUIT S, et al. A poly-reference implementation of the least-squares complex frequency domain estimator[C]//Proceedings of the International Modal Analysis Conference. Kissimmee, FL, USA: Society for Experimental Mechanics, 2003. |
[8] | 郭胜利. 模态参数识别方法与模块开发[D]. 南京: 南京航空航天大学, 2007. GUO Sheng-li. Modal parameter identification method and development of module[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2007. |
[9] | VERBOYEN P, GUILLAUME P, CAUGERGHE B, et al. A comparison of frequency-domain transfer function model estimator formulations for structural dynamics modeling [J]. Journal of Sound and Vibration, 2005, 27(9): 775-798. |
[10] | 李东旭. 高等结构动力学[M]. 北京:科学出版社, 2010. LI Dong-xu. Advanced structural dynamics[M]. Beijing: Science Press, 2010. |
[11] | SHIH C Y, TSUEI Y G. Complex mode indication function and its applications to spatial domain parameter estimation[C]//Proceedings of the 7th International Modal Analysis Conference. Las Vegas, USA: Society for Experimental Mechanics, 1989. |