Iula Antonio, Pappalardo Massimo
Dipartimento di Ingegneria Elettronica, Università Roma Tre, Via della Vasca Navale, 84-00146, Roma, Italy.
IEEE Trans Ultrason Ferroelectr Freq Control. 2006 Jul;53(7):1344-51. doi: 10.1109/tuffc.2006.1665083.
In the present work, a traveling wave ultrasonic motor (TWUSM) is proposed. It is composed of an annular-shaped stator and two cone-shaped rotors that are pressed in contact to the borders of the inner surface of the stator. A rotating traveling wave has been generated in the stator by using as vibration generators two bolted Langevin transducers (BLT) opportunely shifted in space and in time. The vibrational behavior of the stator as well as the traveling wave generation has been simulated with the finite-element method (FEM) software. A prototype of the motor has been manufactured and experimentally characterized. It exhibits a static torque of about 0.8 N x m and a maximum angular speed of about 300 rpm. Possible variations of the present design aimed to increase output torque or minimize encumbrance are described and discussed.
在本工作中，提出了一种行波超声电机（TWUSM）。它由一个环形定子和两个锥形转子组成，这两个锥形转子被压在定子内表面的边缘上并与之接触。通过使用两个在空间和时间上适当偏移的螺栓式兰姆波换能器（BLT）作为振动发生器，在定子中产生了旋转行波。利用有限元方法（FEM）软件对定子的振动行为以及行波的产生进行了模拟。制造了该电机的一个原型并进行了实验表征。它表现出约0.8 N·m的静态转矩和约300 rpm的最大角速度。描述并讨论了旨在增加输出转矩或最小化负担的当前设计的可能变化。
