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Active vibration control of a composite sandwich plate

机译：复合夹芯板的主动振动控制

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摘要

Active vibration control of a free-edge rectangular sandwich plate is proposed and tested. The experimental setup consists of a honeycomb panel having a carbon-fiber reinforced polymer (CFRP) outer skins and a polymer-paper core, subjected to an orthogonal disturbance, due to an electrodynamics exciter and controlled by Macro Fibre Composite (MFC) actuators and sensors. MFC parches consist of rectangular piezoceramic rods sandwiched between layers of adhesive, electrodes and polyamide film. The MFC actuators and sensors are controlled by a programmable digital dSPACE (R) controller board. The control algorithm proposed in this paper is based on the Positive Position Feedback (PPF) technique and is successfully applied with different combinations of inputs/outputs (Single Input Single Output, MultiSISO, Multi Input Multi Output) in order to control the first four normal modes. The control appears to be robust and efficient in reducing vibration in linear (small amplitude) and nonlinear (large amplitude) vibrations regimes, although the structure under investigation exhibits a relativity high modal density, i.e., four resonances in a range of about 100 Hz. The control strategy allows to effectively control each resonance both individually or simultaneously. (C) 2015 Elsevier Ltd. All rights reserved.
机译：提出并测试了自由边缘矩形夹心板的主动振动控制。实验装置由具有碳纤维增强聚合物（CFRP）外壳和聚合物纸芯的蜂窝板组成，该蜂窝板由于电动力学激励器而受到正交干扰，并由Macro Fiber Composite（MFC）致动器和传感器控制。 MFC块由夹在粘合剂，电极和聚酰胺薄膜层之间的矩形压电陶瓷棒组成。 MFC执行器和传感器由可编程数字dSPACE（R）控制器板控制。本文提出的控制算法基于正位置反馈（PPF）技术，已成功应用于输入/输出的不同组合（单输入单输出，MultiSISO，多输入多输出），以控制前四个标准模式。尽管所研究的结构展现出相对的高模态密度，即在大约100 Hz范围内的四个共振，但该控制在减小线性（小振幅）和非线性（大振幅）振动状态下的振动方面似乎是鲁棒且有效的。控制策略允许有效地单独或同时控制每个谐振。 （C）2015 Elsevier Ltd.保留所有权利。

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