An actuator with tuneable resonant frequency for active vibration damping
An actuator with tuneable resonant frequency for active vibration damping
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DOI：
10.1177/1045389x221132553
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发表时间：
2022-11
影响因子：
2.7
通讯作者：
M. Hendijanizadeh;S. Sharkh;P. Mosca;S. Daley
中科院分区：
文献类型：
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作者：
M. Hendijanizadeh;S. Sharkh;P. Mosca;S. Daley
将由音圈作动器（VCA）和簧上惯性质量组成的减振器与螺线管作动器（SA）耦合，实现自适应调谐减振器（ATVA）的主动共振频率调谐。在该装置中，流过SA的直流电流产生负磁刚度，并改变VCA的非线性弹簧的平衡位置，从而改变系统的有效刚度和其谐振频率。本文详细介绍了分析设计步骤和设计SA的参数调整过程，以最大限度地提高其力密度内定义的磁，尺寸和热约束。SA的设计使用有限元分析（FEA）进行验证，制造并连接到VCA以形成完整的ATVA系统。实验结果表明，通过控制SA的直流电流，ATVA的谐振频率的可调谐性。结果表明，该系统的谐振频率可以移动高达23%的基本谐振频率，这提高了有效性的ATVA在阻尼更广泛的激励频率范围。
This paper explores implementing active resonance frequency tuning of adaptive tuned vibration absorbers (ATVA) by coupling a vibration absorber comprising a voice coil actuator (VCA) and a sprung inertial mass to a solenoid actuator (SA). In this device, the DC current flowing through the SA generates negative magnetic stiffness and varies the equilibrium position of the nonlinear spring of the VCA, thus changing the effective stiffness of the system and its resonant frequency. The paper details the analytical design steps and the parametric sizing process of designing the SA to maximize its force density within defined magnetic, dimensions and thermal constraints. The design of the SA was verified using finite element analysis (FEA), manufactured and coupled to a VCA to make the complete ATVA system. The experimental results demonstrate the tunability of the resonance frequency of the ATVA by controlling the SA’s DC current. It is shown that the system’s resonance frequency can be shifted by up to 23% of the fundamental resonance frequency, which improves the effectiveness of the ATVA at damping a broader range of excitation frequencies.