Dynamics modeling and control of a V-shaped ultrasonic motor with two Langevin-type transducers

Li, Xiaoniu; Yao, Zhiyuan; Li, Rong; Wu, Dawei

doi:10.1088/1361-665x/ab627a

Cited by 22 publications

(9 citation statements)

References 33 publications

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“…These results imply the suitability of torsional/flexural vibrations for piezoelectric motors. In further studies, we would like to, as mentioned above, increase the working frequency into the inaudible range by shortening the vibrator's length [34,35]. Additionally, we will model the T/F motor and conduct structural optimization in the future [34,36].…”

Section: Discussionmentioning

confidence: 99%

A Dumbbell Shaped Piezoelectric Motor Driven by the First-Order Torsional and the First-Order Flexural Vibrations

Niu

Liu

et al. 2020

Actuators

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A piezoelectric motor driven by the first-order torsional and first-order flexural (T/F) vibrations is designed, fabricated, and tested in this study. The actuating force is generated by the torsional vibration of the dumbbell-shaped vibrator, while the elliptical motion shape is adjusted with the flexural vibration. The rotor, pressed onto the vibrator’s lateral surface, is frictionally driven with the vibrator. Here, the torsional vibration, the shear modes of piezoelectric ceramics, and the driving method may contribute to high torque and high output power. To test the feasibility of our proposal, first, a prototype of the T/F vibrator is built and its vibration properties are explored. As predicted, the torsional and flexural vibrations are excited on the vibrator. Then, the load characteristics of the piezoelectric motor are investigated. The maximal torque, the no-load rotation speed, and maximal output power are 4.3 Nm, 125 r/min, and 16.9 W, respectively. The results imply that using the first-order torsional and the first-order flexural vibrations is a feasible method to achieve high torque and high output power of piezoelectric motors.

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Section: Discussionmentioning

confidence: 99%

A Dumbbell Shaped Piezoelectric Motor Driven by the First-Order Torsional and the First-Order Flexural Vibrations

Niu

Liu

et al. 2020

Actuators

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“…For the stator model, both the contact force of the stator/slider and the corresponding boundary conditions are considered. The tangential and the normal vibration equations of the V-shaped stator (Li et al, 2019; Zhou et al, 2019) can be described as follows…”

Section: Modeling Of the Motor And Analysismentioning

confidence: 99%

Modeling and validation of preload force effect on characteristics of a V-shaped linear ultrasonic motor

Zhou

Yao

Dai

et al. 2021

Journal of Intelligent Material Systems and Structures

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The traditional dynamic models of linear ultrasonic motor (LUSM) do not consider the influences of the preload force and the roughness of the contact surface of stator/slider on the performance of the motor, which unable to effectively describe the dynamic behavior of the motor. In this paper, a dynamic model is established for a V-shaped LUSM considering the influence of the preload force and the roughness of the contact surface of stator/slider on the dynamic behavior of the motor. The contact mechanism of the stator/slider and the influence of preload force on the stator parameters are studied and analyzed. The effectiveness of the developed model is verified by comparing with the analytical model that ignored the effect of the preload force on the stator parameters. The experimental results shown that the developed model can accurately reflect the dynamic characteristics of the motor, and the model will be helpful for the function prediction and precise control of the motor.

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“…[31] Moreover, it can be seen from Table 1 that the conventional filter wheel was accompanied by the disadvantages of low adjustment accuracy and being time-consuming. In this regard, the characteristics of the RPA described above hopefully alleviate the problems of conventional filter wheel mechanisms [32][33][34] Therefore, it is intrinsically a good match for an MSC optical system since it can flexibly obtain the two-DOF motions through the combination of vibration modes and can be miniaturized through delicate structures, [35,36] The main contribution of this work is to propose a novel integration strategy to simplify the structure and control of the MSC optical system, and we demonstrate a simplified MSC optical system through TFFM to verify the feasibility of the proposed strategy. Specifically, the TFFM is driven by a two-DOF RPA to integrate light filtering and focusing functions.…”

Section: Introductionmentioning

confidence: 99%

“…[ 31 ] Moreover, it can be seen from Table 1 that the conventional filter wheel was accompanied by the disadvantages of low adjustment accuracy and being time‐consuming. In this regard, the characteristics of the RPA described above hopefully alleviate the problems of conventional filter wheel mechanisms [ 32–34 ] Therefore, it is intrinsically a good match for an MSC optical system since it can flexibly obtain the two‐DOF motions through the combination of vibration modes and can be miniaturized through delicate structures, [ 35,36 ]…”

Section: Introductionmentioning

confidence: 99%

Toward Compact Motorized Lens: Switch and Focus a Filter Wheel with Single Piezoelectric Tube

Wang,

Chen,

Deng

et al. 2023

Adv Materials Technologies

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Multispectral cameras (MSCs) have the capability of detecting and analyzing features invisible to human eyes and are of interest for many applications. However, the traditional MSC suffers from bulkiness since the light filtering and optical focusing mechanisms are independent. Herein, it proposed an integrated strategy that implements two functions through a tunable filtering‐focusing mechanism (TFFM), driven by two degrees of freedom (two‐DOF) piezoelectric tube actuator (PTA). The TFFM can realize light filtering and optical focusing through the rotary and linear motions of PTA. The configuration of PTA is presented, and the working principle is discussed. Then, prototypes of PTA and TFFM are developed, weighing merely 5.5 and 8 g, sizing of Ø7 × 21.4 mm and Ø35 × 7 mm, demonstrating the merits of lightweight and miniaturization. Experiments validate the effectiveness of TFFM, including multispectral images acquired with 0.1 s through rotary motion, focused images obtained with a linear speed of 60.2 mm−1s, and a series of images with different sharpness and wavelengths. The sharpness evaluation algorithms are adopted to determine the sharpest image. The work contributes to reducing the volume of MSC systems with multifunctionalities while keeping the devices simple, providing a practical and effective solution for the integrated design of MSC.

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Dynamics modeling and control of a V-shaped ultrasonic motor with two Langevin-type transducers

Cited by 22 publications

References 33 publications

A Dumbbell Shaped Piezoelectric Motor Driven by the First-Order Torsional and the First-Order Flexural Vibrations

A Dumbbell Shaped Piezoelectric Motor Driven by the First-Order Torsional and the First-Order Flexural Vibrations

Modeling and validation of preload force effect on characteristics of a V-shaped linear ultrasonic motor

Toward Compact Motorized Lens: Switch and Focus a Filter Wheel with Single Piezoelectric Tube

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