A rod type linear ultrasonic motor utilizing longitudinal traveling waves: proof of concept

authored by: Liang Wang, Tim Wielert, Jens Twiefel, Jiamei Jin, Joerg Wallaschek
Abstract: This paper proposes a non-resonant linear ultrasonic motor utilizing longitudinal traveling waves. The longitudinal traveling waves in the rod type stator are generated by inducing longitudinal vibrations at one end of the waveguide and eliminating reflections at the opposite end by a passive damper. Considering the Poisson's effect, the stator surface points move on elliptic trajectories and the slider is driven forward by friction. In contrast to many other flexural traveling wave linear ultrasonic motors, the driving direction of the proposed motor is identical to the wave propagation direction. The feasibility of the motor concept is demonstrated theoretically and experimentally. First, the design and operation principle of the motor are presented in detail. Then, the stator is modeled utilizing the transfer matrix method and verified by experimental studies. In addition, experimental parameter studies are carried out to identify the motor characteristics. Finally, the performance of the proposed motor is investigated. Overall, the results indicate very dynamic drive characteristics. The motor prototype achieves a maximum mean velocity of 115 mm s-1 and a maximum load of 0.25 N. Thereby, the start-up and shutdown times from the maximum speed are lower than 5 ms.
Organisation(s): Institute of Dynamics and Vibration Research
Type: Article
Journal: Smart materials and structures
Volume: 26
ISSN: 0964-1726
Publication date: 08.2017
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Condensed Matter Physics, Mechanics of Materials, Signal Processing, Atomic and Molecular Physics, and Optics, General Materials Science, Electrical and Electronic Engineering, Civil and Structural Engineering
Electronic version(s): https://doi.org/10.1088/1361-665X/aa78d2 (Access: Closed)

BibTeX

@article{b30ed1cd873d429abacfd7b90d6f0708,
title = "A rod type linear ultrasonic motor utilizing longitudinal traveling waves: proof of concept",
abstract = "This paper proposes a non-resonant linear ultrasonic motor utilizing longitudinal traveling waves. The longitudinal traveling waves in the rod type stator are generated by inducing longitudinal vibrations at one end of the waveguide and eliminating reflections at the opposite end by a passive damper. Considering the Poisson's effect, the stator surface points move on elliptic trajectories and the slider is driven forward by friction. In contrast to many other flexural traveling wave linear ultrasonic motors, the driving direction of the proposed motor is identical to the wave propagation direction. The feasibility of the motor concept is demonstrated theoretically and experimentally. First, the design and operation principle of the motor are presented in detail. Then, the stator is modeled utilizing the transfer matrix method and verified by experimental studies. In addition, experimental parameter studies are carried out to identify the motor characteristics. Finally, the performance of the proposed motor is investigated. Overall, the results indicate very dynamic drive characteristics. The motor prototype achieves a maximum mean velocity of 115 mm s-1 and a maximum load of 0.25 N. Thereby, the start-up and shutdown times from the maximum speed are lower than 5 ms.",
keywords = "linear ultrasonic motor, longitudinal traveling waves, stator modeling, transfer matrix method, experimental validation",
author = "Liang Wang and Tim Wielert and Jens Twiefel and Jiamei Jin and Joerg Wallaschek",
note = "Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",
year = "2017",
month = aug,
doi = "10.1088/1361-665X/aa78d2",
language = "English",
volume = "26",
journal = "Smart materials and structures",
issn = "0964-1726",
publisher = "IOP Publishing Ltd.",
number = "8",
}