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New control strategy for suppressing the local vibration of sandwich beams based on the wave propagation method
Journal of Intelligent Material Systems and Structures ( IF 2.7 ) Pub Date : 2021-05-24 , DOI: 10.1177/1045389x211018845
Jun Xu 1 , Yandong Chen 1 , Yongpeng Tai 2 , Guodong Shi 1 , Ning Chen 1 , Jialing Yao 2
Affiliation  

The general vibration control strategy of beam structures is a global vibration control method based on the principle of modal superposition. However, the vibration wave control of beams can achieve local control of the vibration energy. This paper presents a wave control method for the local vibration control of fractional viscoelastic composite beams based on the operating principle of a piezoelectric sheet. To obtain better control performance, a particle swarm optimization algorithm was adopted to optimize the parameters of the piezoelectric sheet. A linear quadratic regulator control algorithm was designed to verify the validity of the proposed method. In addition, the effects of the piezoelectric sheet number and fractional order on the amplitude response and optimization parameters were investigated. We observed that the proposed method has a good control effect on the local area vibration, and it can control the flow direction of the vibration power. The proposed method can be used to directly design the voltage and phase of a piezoelectric sheet without real-time feedback computation. This method is suitable for reducing local vibration under single repetitive operating conditions in engineering and can provide a theoretical basis for a follow-up study on the acoustic black hole phenomenon.



中文翻译:

基于波传播方法的抑制夹层梁局部振动的新控制策略

梁结构的一般振动控制策略是基于模态叠加原理的整体振动控制方法。但是,梁的振动波控制可以实现振动能量的局部控制。本文基于压电片的工作原理,提出了一种用于部分粘弹性复合梁局部振动控制的波动控制方法。为了获得更好的控制性能,采用了粒子群算法对压电片的参数进行优化。设计了线性二次调节器控制算法,以验证该方法的有效性。此外,研究了压电片数和分数阶数对振幅响应和优化参数的影响。我们观察到该方法对局部振动具有良好的控制效果,并且可以控制振动功率的流向。所提出的方法可用于直接设计压电片的电压和相位,而无需实时反馈计算。该方法适用于减少工程中单个重复运行条件下的局部振动,可为后续的声学黑洞现象的研究提供理论依据。

更新日期:2021-05-24
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