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Vibration damping using piezoelectric stiffener-actuators with application to orthotropic plates

机译:使用压电加劲肋作动器的减振及其在正交各向异性板上的应用

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摘要

The converse piezoelectric effect is used to suppress the vibrations of an othotropic plate stiffened with piezoelectric actuators. The control problem involves the minimization of the dynamic response of the plate by using the voltage applied to the piezoelectric stiffeners as a control variable. The dynamic response is defined as a combination of the dynamic deflection and the velocity of the plate and expressed as a quadratic cost functional. The piezoelectric stiffeners are bonded on the opposite surfaces of the plate and placed symmetrically with respect to the middle plane. The control forces and moments are activated by applying in-phase or out-of-phase voltages, respectively. The active control takes the form of a piecewise constant alternating voltage with varying switch-over intervals to achieve optimum effect. Numerical results are given to demonstrate the effectiveness of the proposed control mechanism and to investigate the effects of various problem parameters on the control of vibrations.
机译:逆压电效应用于抑制用压电致动器加固的各向异性板的振动。控制问题涉及通过使用施加到压电加强件的电压作为控制变量来最小化板的动态响应。动态响应定义为动态挠度和板速度的组合,并表示为二次成本函数。压电加强件粘结在板的相对表面上,并相对于中间平面对称放置。控制力和力矩分别通过施加同相或异相电压来激活。主动控制采用分段恒定交流电压的形式,具有变化的切换间隔,以实现最佳效果。数值结果表明了所提出的控制机制的有效性,并研究了各种问题参数对振动控制的影响。

著录项

  • 来源
    《Composite Structures》 |1996年第3期|p.251-261|共11页
  • 作者

    V. Birman; S. Adali;

  • 作者单位

    Engineering Education Center, University of Missouri-Rolla, St Louis, MO 63121, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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