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首页> 外文会议>IUTAM Symposium on Dynamics of Advanced Materials and Smart Structures May 20-24, 2002 Yonezawa, Japan >ACTIVE DAMPING OF TORSIONAL VIBRATION IN A PIEZOELECTRIC FIBER COMPOSITE SHAFT
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ACTIVE DAMPING OF TORSIONAL VIBRATION IN A PIEZOELECTRIC FIBER COMPOSITE SHAFT

机译：压电纤维复合材料轴的扭转振动主动阻尼

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Problem of active damping of torsional vibration with the help of piezoelectric materials has been taken up since late 80s. The most popular piezoelectrics applied to control systems were piezoceramics based on lead zirconate titanate (PZT) and piezopolymers made of polyvinylidene fluoride (PVDF). Admittedly, they enjoy a special favour up to present. In majority of papers discussing the efficiency of piezoelectric elements in torsional systems it is assumed that they are elements of negligible mass and are perfectly attached to the given structure. On that assumption Meng-Kao Yeh and Chih-Yuan Chin studied the sensing capability of piezoelements, and Chia-Chi Sung et al. investigated a torsional system with a closed control loop. The shear piezoelectric effect was considered in their work. An interesting approach was proposed by Spearritt and Asokanthan who took advantage of the longitudinal piezoelectric effect for controlling torsional vibration. They wrapped PVDF actuators around a tube at 45° . The feasibility of inducing twist in a plate using piezoelectric elements was also demonstrated by Lee and Moon. The desired effect was achieved by bonding layers of PVDF films with skew angles 45° on both sides of the plate. The effort to develop an effective method of torsional vibration control is especially important in the case of high-responsibility structures, e.g. aircrafts, helicopters, etc. Bitter and Breitbach showed that a piezoelectrically controlled tension-torsional coupling results in higher aerodynamic efficiency of helicopter blades. They obtained a 1.5° piezo-induced twist of the blades near the resonance frequency.
机译：自80年代末以来，人们就开始研究利用压电材料主动阻尼扭转振动的问题。应用于控制系统的最流行的压电是基于锆钛酸钛酸铅（PZT）的压电陶瓷和由聚偏二氟乙烯制成的压电聚合物（PVDF）。诚然，他们到目前为止一直享有特别的恩惠。在讨论扭转系统中压电元件效率的大多数论文中，都假设它们是质量可忽略不计的元件，并且完美地附着在给定的结构上。在此假设下，叶梦高和钱志远研究了压电元素的传感能力，而Chia-Chi Sung等人则对此进行了研究。研究了具有封闭控制环的扭转系统。在他们的工作中考虑了剪切压电效应。 Spearritt和Asokanthan提出了一种有趣的方法，他们利用纵向压电效应来控制扭转振动。他们将PVDF执行器以45°缠绕在管上。 Lee和Moon也证明了使用压电元件在板中产生扭曲的可行性。通过在板的两面上粘合倾斜角度为45°的PVDF薄膜层，可以实现所需的效果。在高响应性结构（例如结构）的情况下，开发有效的扭转振动控制方法的努力尤其重要。 Bitter和Breitbach指出，压电控制的拉扭耦合可提高直升机叶片的空气动力学效率。他们在共振频率附近获得了1.5°压电诱导的叶片扭曲。

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