钻锚机钻臂模态参数的高精度提取方法及实验

研究了一种钻锚机钻臂模态参数的精确提取方法,并通过仿真和实验对方法的有效性和可靠性进行了验证。实验结果表明,该方法能够从脉冲响应信号中高精度的提取结构的模态参数（模态频率、阻尼比）,不受多阶模态响应信号叠加的影响,有效地解决了传统模态参数提取方法的不足。利用本方法获得的模态参数,为钻锚机钻臂有限元模型的更新与修正,为其动态特性的预估和优化设计提供了参考。...

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Bibliographic Details
Published in煤炭学报 Vol. 37; no. 7; pp. 1239 - 1244
Main Author 董洪波 姚宁平 张幼振 杜小山 祁克玉
Format Journal Article
LanguageChinese
Published 2012
Subjects
有限元模型修正
模态参数提取
钻锚机钻臂
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Summary:研究了一种钻锚机钻臂模态参数的精确提取方法,并通过仿真和实验对方法的有效性和可靠性进行了验证。实验结果表明,该方法能够从脉冲响应信号中高精度的提取结构的模态参数（模态频率、阻尼比）,不受多阶模态响应信号叠加的影响,有效地解决了传统模态参数提取方法的不足。利用本方法获得的模态参数,为钻锚机钻臂有限元模型的更新与修正,为其动态特性的预估和优化设计提供了参考。
Bibliography:11-2190/TD
roof bolter＇ s drilling arm;modal paramenter identification;finite element model updating
A novel method was proposed to identify the modal parameters of roof bolter＇ s drilling arm with high preci- sion. In order to verify this method, we made an experiment, and the results showed that the method had a good validity and reliability. The proposed method is less affected by mode superposition and can overcome the disadvantages of tra- ditional modal parameters identification method. Furthermore, the method can help to update the FEM model of roof bolter＇ s drilling arm and the identified modal parameters also provide basic data to further dynamic analysis and opti- mum design.
DONG Hong-bo , YAO Ning-ping, ZHANG You-zhen , DU Xiao-shan , QI Ke-yu （ 1. Xi＇ an Research Institute of China Coal Technology ＆ Engineering Group Corp. ,Xi＇ an 710077, China ;2. School of Engineering, China University of Geo- sciences （Wuhan） , Wuhan 430074, China ;3. Institute of Electromechanical Information Technology ,Xi ＇ a
ISSN:0253-9993