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Model and Analysis of Piezoelectric Actuator in Practical Three-Stage Mechanism
International Journal of Precision Engineering and Manufacturing ( IF 1.9 ) Pub Date : 2020-06-24 , DOI: 10.1007/s12541-020-00369-x
Dror A. Levy , Amir Shapiro

Piezoelectric elements (PEMs) are used in a variety of applications. In this paper we developed a full analytical model of a piezoelectric actuator which includes piezostack elements and a three-stage amplification mechanism. The model was derived separately for each unit of the system. Next, the units were combined, while taking into account their coupling. The hysteresis phenomenon, which is significant in piezoelectric materials, was extensively described. A number of hysteresis calculating algorithms were investigated and a new simple method of examining piezoelectric hysteresis was demonstrated. The theoretical model was verified in a laboratory setup. This setup includes a piezoelectric actuator, measuring devices and an acquisition system. The measured results were compared to the theoretical results, while taking into account the nonlinear phenomena of the piezoelectric materials and the three-stage amplification mechanism, and were found to be very similar. Due to its simplicity, this model can easily be modified in order to be applied to other PEMs or other amplification mechanism methods. The main novelty of this work lies in its system-level approach for piezoelectric actuators. All of the system elements include non-linear phenomena, which mutually influence each other. First, each part of the system will be described separately and then, the combined subsystems and the coupling between their parts will be represented. Finally we treat this system as one whole unit.



中文翻译:

实用三阶段机构中压电执行器的建模与分析

压电元件(PEM)用于多种应用。在本文中,我们开发了压电致动器的完整分析模型,其中包括压电堆栈元件和三级放大机制。该模型是针对系统的每个单元分别导出的。接下来,将单元合并,同时考虑它们的耦合。广泛描述了在压电材料中很明显的磁滞现象。研究了许多磁滞计算算法,并介绍了一种检查压电磁滞的新的简单方法。理论模型已在实验室中进行了验证。该设置包括压电致动器,测量设备和采集系统。将测量结果与理论结果进行比较,同时考虑到压电材料的非线性现象和三级放大机制,发现非常相似。由于其简单性,可以轻松修改此模型,以便将其应用于其他PEM或其他放大机制方法。这项工作的主要新颖之处在于其用于压电执行器的系统级方法。所有系统元素都包含相互影响的非线性现象。首先,将分别描述系统的每个部分,然后,将描述组合的子系统及其各部分之间的耦合。最后,我们将该系统视为一个整体。可以轻松修改此模型,以将其应用于其他PEM或其他放大机制方法。这项工作的主要新颖之处在于其用于压电执行器的系统级方法。所有系统元素都包含相互影响的非线性现象。首先,将分别描述系统的每个部分,然后,将描述组合的子系统及其各部分之间的耦合。最后,我们将该系统视为一个整体。可以轻松修改此模型,以将其应用于其他PEM或其他放大机制方法。这项工作的主要新颖之处在于其用于压电执行器的系统级方法。所有系统元素都包含相互影响的非线性现象。首先,将分别描述系统的每个部分,然后,将描述组合的子系统及其各部分之间的耦合。最后,我们将该系统视为一个整体。组合子系统及其各部分之间的耦合将被展示。最后,我们将该系统视为一个整体。组合子系统及其各部分之间的耦合将被展示。最后,我们将该系统视为一个整体。

更新日期:2020-06-24
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