Design and fabrication of ultrasonic traveling wave bi-directional linear motors

Lee, Seung‐Hee; Roh, Yongrae; Han, Woo-Seok; Kim, Yeon-Bo

doi:10.1109/ultsym.1999.849484

Cited by 1 publication

(3 citation statements)

References 3 publications

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“…Rotary type traveling wave ultrasonic motors have already been commercialized and widely applied in many areas, such as optics, aeronautics, astronautics, robotics, biomedicine and precision engineering [1][2][3][4][5]. Linear ultrasonic motors [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] also gained much attention as another type of actuators in the past. Their applications are, for instance, in precision positioning stages for MEMS machines and nanofabrication [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Since then, many different types of L-TWUSMs have been designed and studied, i.e. [16][17][18][19][20][21][22][23][24]. Kuribayashi et al [17] investigated the excitation conditions of a L-TWUSM utilizing two Langevin transducers and a transmission bar.…”

Section: Introductionmentioning

confidence: 99%

“…A second concept for generating traveling waves is the superposition of two phase shifted standing waves. This principle is used in almost all rotational TWUSMs [1][2][3], and was also used to develop L-TWUSMs presented by [20][21][22][23]. In a typical setup, two sets of piezoelectric ceramics are glued on the top and bottom of a straight beam stator side.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Wang

Wielert

Twiefel

et al. 2017

Smart Mater. Struct.

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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.

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