Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, VA, USA.
IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Jan;59(1):108-20. doi: 10.1109/TUFFC.2012.2161.
This paper develops an analytical model for an L-shaped piezoelectric motor. The motor structure has been described in detail in Part I of this study. The coupling of the bending vibration mode of the bimorphs results in an elliptical motion at the tip. The emphasis of this paper is on the development of a precise analytical model which can predict the dynamic behavior of the motor based on its geometry. The motor was first modeled mechanically to identify the natural frequencies and mode shapes of the structure. Next, an electromechanical model of the motor was developed to take into account the piezoelectric effect, and dynamics of L-shaped piezoelectric motor were obtained as a function of voltage and frequency. Finally, the analytical model was validated by comparing it to experiment results and the finite element method (FEM).
本文为 L 型压电马达开发了一种分析模型。在本研究的第一部分中已经详细描述了马达结构。双晶片的弯曲振动模式的耦合导致尖端产生椭圆运动。本文的重点是开发一种精确的分析模型，该模型可以根据其几何形状预测电机的动态行为。首先，对电机进行机械建模以确定结构的固有频率和模态形状。接下来，开发了电机的机电模型以考虑压电效应，并获得了作为电压和频率函数的 L 型压电马达的动力学。最后，通过将分析模型与实验结果和有限元方法（FEM）进行比较来验证该模型。
