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Active vibration control of a shaft bracket-plate coupled system
Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment ( IF 1.8 ) Pub Date : 2021-07-22 , DOI: 10.1177/14750902211033262
Dequan Yang 1, 2 , Xiling Xie 1, 2 , Mingke Ren 1, 2 , Zhiyi Zhang 1, 2
Affiliation  

Active vibration control of a shaft bracket-plate coupled system is investigated. The vibration of the plate is controlled with electromagnetic vibration absorbers (EVAs), which are mounted around the feet of the shaft bracket to impede the transmission of vibration from the bracket apex to the plate. A dynamic model is established on the Timoshenko beam theory and the Kirchhoff thin plate theory to reveal the mechanism of vibration transmission. It is exhibited that all the induced forces and moments at the coupling points contribute much to the transverse responses of the plate. The feasibility of active control with the EVAs is evaluated numerically based on the controllability of the plate vibration. It is demonstrated that the two-point in-plane control is able to attenuate the plate vibration under the excitation of in-plane disturbance forces, while the multi-point control is effective in reducing the plate vibration regardless of the directions of disturbance forces. An experimental system is built to verify the performance of the two-point in-plane control. The results have shown that with the help of adaptive control, the two-point in-plane control is capable of suppressing the vibration of the foundation induced by the in-plane forces acting on the shaft bracket.



中文翻译:

轴托板耦合系统的振动主动控制

研究了轴支架-板耦合系统的振动主动控制。板的振动由电磁减振器 (EVA) 控制,EVA 安装在轴支架的支脚周围,以阻止振动从支架顶点传递到板。基于Timoshenko梁理论和Kirchhoff薄板理论建立动力学模型,揭示振动传递机理。结果表明,耦合点处的所有诱导力和力矩对板的横向响应贡献很大。基于板振动的可控性,对EVA主动控制的可行性进行了数值评估。证明了两点面内控制能够在面内干扰力的激励下衰减板振动,而多点控制可以有效地减少板振动,而不管干扰力的方向如何。建立了一个实验系统来验证两点平面控制的性能。结果表明,在自适应控制的帮助下,两点面内控制能够抑制由作用在轴支架上的面内力引起的基础振动。

更新日期:2021-07-23
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