Development and numerical characterization of a new standing wave ultrasonic motor operating in the 30-40 kHz frequency range

作者：Hou Xiaoyan^*; Pueh Lee Heow; Jin Ong Chong; Piang Lim Siak

来源：Ultrasonics, 2013, 53(5): 928-934.

DOI：10.1016/j.ultras.2012.10.016

• Standing wave ultrasonic motor
• Piezoelectric actuator
• Mode superimposition
• Finite element modeling

The purpose of this research is to present a new design of standing-wave ultrasonic motor. This motor uses three piezoelectric actuating blocks which deform appropriately when powered up. The deformations of the blocks in ultrasonic range are internally amplified via the design of the motor by about 80 times and collectively yield an elliptical trajectory for the driving head of the motor. Finite Element Analysis using ANSYS was performed for both dynamic analysis and optimization of a prototype motor. The numerical results verified that at steady state, the motor can achieve vibrations in micro-meter level and the velocity can reach decimeter scale, satisfying the fast speed requirement as a positioning actuator.

• 出版日期2013-7