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Ultrasonic motor performance influenced by lubricant properties

Qiu, Wei LU orcid ; Mizuno, Yosuke ; Adachi, Koshi and Nakamura, Kentaro (2018) In Sensors and Actuators, A: Physical 282. p.183-191
Abstract
Functional lubrication has been shown to be a promising method for improving the performance ofultrasonic motors (USMs). However, the complex lubrication mechanisms have not been studied and the effect of lubricant properties on motor performance remains unknown. In this paper, both low-traction fluids and high-traction fluids with a wide viscosity range are applied, and the lubricating effects are investigated in hybrid transducer-type ultrasonic motors. The results clearly show that high-traction fluids have significant superiority to low-traction fluids in terms of motor efficiency and reduction of friction loss at the entire range of the applied preload. A high friction coefficient in boundary lubrication regime and efficient... (More)
Functional lubrication has been shown to be a promising method for improving the performance ofultrasonic motors (USMs). However, the complex lubrication mechanisms have not been studied and the effect of lubricant properties on motor performance remains unknown. In this paper, both low-traction fluids and high-traction fluids with a wide viscosity range are applied, and the lubricating effects are investigated in hybrid transducer-type ultrasonic motors. The results clearly show that high-traction fluids have significant superiority to low-traction fluids in terms of motor efficiency and reduction of friction loss at the entire range of the applied preload. A high friction coefficient in boundary lubrication regime and efficient modulation in friction are confirmed to be essential for achieving high-performance lubricated USMs. It is also found that the motor performance is independent of lubricant viscosities in the tested range, irrespective of lubricant types. The reasons for the distinct lubricating effects with the two types of lubricants are analyzed in detail, which leads to the criteria of selecting lubricants and more understanding in the lubrication mechanisms in USMs. (Less)
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author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ultrasonic motors, Efficiency, Torque, Lubricant, Viscosity, Lubrication mechanisms
in
Sensors and Actuators, A: Physical
volume
282
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85053517983
ISSN
0924-4247
DOI
10.1016/j.sna.2018.09.022
language
English
LU publication?
no
id
55d7774d-be2a-4f5f-800f-97f19603fefb
date added to LUP
2022-08-10 23:29:24
date last changed
2022-08-18 13:55:39
@article{55d7774d-be2a-4f5f-800f-97f19603fefb,
  abstract     = {{Functional lubrication has been shown to be a promising method for improving the performance ofultrasonic motors (USMs). However, the complex lubrication mechanisms have not been studied and the effect of lubricant properties on motor performance remains unknown. In this paper, both low-traction fluids and high-traction fluids with a wide viscosity range are applied, and the lubricating effects are investigated in hybrid transducer-type ultrasonic motors. The results clearly show that high-traction fluids have significant superiority to low-traction fluids in terms of motor efficiency and reduction of friction loss at the entire range of the applied preload. A high friction coefficient in boundary lubrication regime and efficient modulation in friction are confirmed to be essential for achieving high-performance lubricated USMs. It is also found that the motor performance is independent of lubricant viscosities in the tested range, irrespective of lubricant types. The reasons for the distinct lubricating effects with the two types of lubricants are analyzed in detail, which leads to the criteria of selecting lubricants and more understanding in the lubrication mechanisms in USMs.}},
  author       = {{Qiu, Wei and Mizuno, Yosuke and Adachi, Koshi and Nakamura, Kentaro}},
  issn         = {{0924-4247}},
  keywords     = {{Ultrasonic motors; Efficiency; Torque; Lubricant; Viscosity; Lubrication mechanisms}},
  language     = {{eng}},
  month        = {{09}},
  pages        = {{183--191}},
  publisher    = {{Elsevier}},
  series       = {{Sensors and Actuators, A: Physical}},
  title        = {{Ultrasonic motor performance influenced by lubricant properties}},
  url          = {{http://dx.doi.org/10.1016/j.sna.2018.09.022}},
  doi          = {{10.1016/j.sna.2018.09.022}},
  volume       = {{282}},
  year         = {{2018}},
}