基于矩形薄板面内振动的直线型超声电机的研究

Study on the linear ultrasonic motor based on the vibration in plane of the rectangular plate

针对一种基于矩形薄板面内振动的直线型超声电机进行了研究。首先对其核心结构部件——矩形压电陶瓷薄板进行了结构设计,导出了矩形压电陶瓷薄板的长度和宽度比为4.0的结论,并利用ANSYS有限元软件进行了相应的计算和验证。还首次对这种电机的工作模态的激发和运动原理进行了比较深入的分析和探讨。最后,实验研究结果表明误差仅为3.74％,证明了所作分析的正确性。

This paper studies on a linear ultrasonic motor based on the vibration in plane of the rectangular plate. First, the structure of the thin rectangular piezoelectric ceramic plate (the key part of this kind of motor) has been theoretically designed and a conclusion that the practical ratio of the length to the width of this thin rectangular plate is 4.0 is drawn, and some corresponding analysis and validation are done by the ANSYS package. Then, the excitation of the working vibration modes and the working principle of this kind of motor have been relatively deeply analyzed and discussed for the first time. At last, the experimental results show that the error is only 3.74%, therefore the correctness of the relevant analysis in this paper is obtained.