基于压电片位置优化的弹性约束旋转梁振动主动控制

IF 4.9 2区 工程技术 Q1 ACOUSTICS
Xiaohu Ma, Zhu Su
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引用次数: 0

摘要

本文建立了带有压电传感器/执行器的弹性约束旋转梁的动力学模型,研究了在混合激励下,通过优化压电片的位置来主动控制旋转梁振动的能力。采用人工弹簧技术模拟了弹性边界条件,并通过离心力势能的加入考虑了旋转运动引起的加筋效应。采用改进的傅立叶级数法展开位移场,利用拉格朗日方程导出系统控制方程。基于可控性Gramian矩阵,针对前两种振型振动及其组合优化了压电传感器/执行器的布置,并研究了边界刚度和转速对优化结果和相应控制性能的影响。结果表明,线性弹簧刚度对优化结果影响显著,而扭转弹簧刚度和转速对优化结果影响较小。最后,对旋转梁进行了振动控制实验,验证了所提控制系统的正确性和有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Active vibration control of elastically restrained rotating beams with piezoelectric patches placement optimization
This paper establishes a dynamic model of an elastically restrained rotating beam equipped with piezoelectric sensors/actuators, and the ability to actively control vibrations of this beam subjected to mixed excitation with optimization of the placement of piezoelectric patches is investigated. The elastic boundary conditions are simulated via the artificial spring technique, and the stiffening effect resulting from rotation motion is considered by adding potential energy due to the centrifugal force. The displacement field is expanded using the modified Fourier series method, and the system governing equations are derived through the Lagrange equations. On the basis of the controllability Gramian matrix, the placement of piezoelectric sensors/actuators is optimized for the first two flapwise modal vibrations and their combination, and the effects of boundary stiffness and rotational speed on the optimization results and corresponding control performance are studied. The results indicate that the linear spring stiffness significantly influences the optimization results, whereas the torsional spring stiffness and rotational speed have little effect on the optimization results. Finally, a vibration control experiment was conducted on a rotating beam to verify the correctness and effectiveness of the proposed control system.
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来源期刊
Journal of Sound and Vibration
Journal of Sound and Vibration 工程技术-工程:机械
CiteScore
9.10
自引率
10.60%
发文量
551
审稿时长
69 days
期刊介绍: The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.
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