| 工作模态参数识别方法的研究 |
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| 引用本文： | 杨炯明,王锋,赵常举. 工作模态参数识别方法的研究[J]. 太原理工大学学报, 2011, 42(4): 412-414 |
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| 作者姓名： | 杨炯明 王锋 赵常举 |
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| 作者单位： | 1. 北京金风科创风电设备股份有限公司,北京,100176
2. 太原理工大学机械电子研究所,太原,030024 |
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| 基金项目： | 山西省攻关项目(2010032204) |
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| 摘 要： | 针对传统模态识别方法难以准确识别重频、高阻尼比的模态参数的特点,主要研究了系统在环境激励下不同工况用随机子空间法和Polymax算法识别的模态参数(模态频率、模态阻尼比和模态振型)的变化情况。随机子空间法是一种时域模态参数识别方法,在相邻模态的识别方面,它明显优于一些传统的模态识别方法。Polymax模态识别方法也称为多参考点最小二乘复频域法,在阻尼比的识别方面具有明显的优势。本文通过悬臂梁的对比实验研究验证了它们在不同激励条件下的有效性和可靠性。
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| 关 键 词： | 随机子空间法 Polymax 环境激励 模态参数识别 |
Study of Operating Modal Parameter Identification |
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| YANG Jiong-ming,WANG Feng,ZHAO Chang-ju. Study of Operating Modal Parameter Identification[J]. Journal of Taiyuan University of Technology, 2011, 42(4): 412-414 |
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| Authors: | YANG Jiong-ming WANG Feng ZHAO Chang-ju |
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| Affiliation: | YANG Jiong-ming1,WANG Feng2,ZHAO Chang-ju2(1.Beijing Goldwind Science & Creation Windpower Equipment CO.LTD,Beijing 100176,China,2.Mechanical and Electronic Research Institute,Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | It is difficult for the traditional methods to identify modal parametes of structures with overlap modal frequencies and high modal damping.With incentive-based environmental random subspace method and Polymax algorithm,this paper studied the changes of modal parameters(modal frequencies,modal damping ratios and mode shapes) in different conditions.Random subspace method is a time-domain modal identification method,and in identification of adjacent modes,it is better than some traditional modal identificati... |
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| Keywords: | random subspace method polymax environmental incentives modal identification |
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