| 区间参数智能梁结构闭环系统动态特性分析 |
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| 引用本文： | 王敏娟,陈建军,林立广,贾爱芹,魏永祥.区间参数智能梁结构闭环系统动态特性分析[J].电子科技大学学报(社会科学版),2011(1). |
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| 作者姓名： | 王敏娟 陈建军 林立广 贾爱芹 魏永祥 |
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| 作者单位： | 西安电子科技大学机电工程学院;中国兵器工业第203研究所; |
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| 基金项目： | 国家863计划(2006AA04Z402) |
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| 摘 要： | 以区间参数压电智能梁结构为研究对象,建立了基于位移反馈控制结构闭环系统动态特性分析的有限元模型。在材料物理参数和几何尺寸等为区间变量时,分析了结构质量矩阵和刚度矩阵的不确定性。并从求解结构振动动态特性的Rayleigh商出发,利用区间变量运算法则推导出了结构闭环系统固有频率的数字特征表达式。通过算例,考察了区间参数对结构固有频率特性的影响,并验证了所建模型和方法的可行性与合理性。研究结果表明,利用区间系数分析法来研究压电智能梁结构闭环系统的动态特性具有一定的工程应用价值。
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| 关 键 词： | 闭环系统 区间运算法则 区间系数 动态特性分析 压电智能梁 |
Dynamic Characteristic Analysis of Closed Loop Systems for the Intelligent Beam with Interval Parameters |
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| WANG Min-juan,CHEN Jian-jun,LIN Li-guang,JIA Ai-qin, WEI Yong-xiang.Dynamic Characteristic Analysis of Closed Loop Systems for the Intelligent Beam with Interval Parameters[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2011(1). |
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| Authors: | WANG Min-juan CHEN Jian-jun LIN Li-guang JIA Ai-qin WEI Yong-xiang |
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| Institution: | WANG Min-juan1,CHEN Jian-jun1,LIN Li-guang2,JIA Ai-qin1,and WEI Yong-xiang1(1.School of Electromechanical Engineering,Xidian University Xi'an 710071,2.No.203 Research Institute of China Ordnance Industries Xi'an 710061) |
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| Abstract: | Piezoelectricity intelligent beam structures with interval parameters are researched in this paper.The finite element modeling of structural close loop systems for dynamic characteristic analysis is established by displacement feedback control method.The uncertainty of mass matrix and stiffness matrix are analyzed when the structural physical parameters and geometric dimensions etc are interval variables.The computation expression of structural natural frequency of close loop systems is obtained by employin... |
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| Keywords: | close loop system dynamic characteristic analysis interval algorithms interval coefficient piezoelectricity intelligent beam |
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