A hollow cylindrical linear nut-type ultrasonic motor

  • Zhuzi Chen Physics Department, Tsinghua University, Beijing, China
  • Yu Chen Physics Department, Tsinghua University, Beijing, China
  • Tieying Zhou Physics Department, Tsinghua University, Beijing, China
Keywords: Hollow, linear, nut-type ultrasonic motor, energy efficiency, mechanical quality factor,

Abstract

A hollow, linear, nut-type, ultrasonic motor based on two degenerate, 3rd-order bending modes in the section plane of cylinders is presented in this paper. The stator and rotor of the motor are both cylindrical and hollow, making the motor appropriate for applications where a light path, electric wire or optic fiber is required to pass through the motor. A new structure with four PZT plates bonded on the stator is proposed here. and the other had all eight sides bonded with PZT plates. The results show that the new design with four PZT plates has a higher mechanical quality factor, vibrates with larger amplitude, and has comparable performance to the stator with eight PZT plates. The motor with four PZT plates reached an upward speed of 0.95 mm/s when the load force was 3 g, and the maximum thrust force was 0.35 N.

DOI: http://dx.doi.org/10.5755/j01.mech.22.6.13366

Author Biographies

Zhuzi Chen, Physics Department, Tsinghua University, Beijing, China
Zhuzi Chen was born in 1987 in Jiangxi, China. He received his B.E degree in material shaping and control engineering from Shaanxi University of Science and Technology, Xi'an, China, in 2008 and the M.E degree in agricultural electrification and automation from South China Agriculture University, Guangzhou, China. He is currently pursuing his Ph.D. degree in acoustics at Tsinghua University, Beijing, China. His research interests include piezoelectric sensors and actuators and vibration kinetics.
Yu Chen, Physics Department, Tsinghua University, Beijing, China
Yu Cheng is a professor in the Physics  Department at Bejing University. He received his B.Eng. degree in Department of Architecture from China University of Mining and Technology, Beijing, China, in 1982, and his M.S. degree in  theoretical mechanics from The University of Nottingham, Nottingham, Britain, in 1987 and his Ph.D. degree in acoustics from The Open University,Britain, in 1992. After that Professor Chen has been working in Physics Department, Tsinghua University. His research interests include ultrasonic motors, thermoacoustics, underwater acoustics, and acoustics testing.
Tieying Zhou, Physics Department, Tsinghua University, Beijing, China
Tieying Zhou is a retired lecturer in Physics Department, Tsinghua University. She was born in 1937 in Shandong, China. She got her B.S. and M.S. degree in physics from Tshinghua University. She spent most her life in developing ultrasonic transducers . She received the Guanghua Award for Scientific and Technological Advancement in 1992. She began research in piezoelectric motors in 1985, being the pioneer in this feild in China.
Published
2016-12-16
Section
DESIGN AND OPTIMIZATION OF MECHANICAL SYSTEMS