A 3D printed sandwich-type piezoelectric motor with a surface texture

Liu, Ruixuan; Li, Xiaoniu; Yu, Dingwen; Cao, Teng; Cao, Jia Meng; Wang, Boquan; Wu, Dawei

doi:10.1063/5.0107009

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…Compared to electromagnetic motors, USMs offer simple structures, self-locking at power-off stage, and no electromagnetic interference [1,3]. In recent years, rotary USMs have attracted much attention since their compact structures make them potentially applicable to some special application areas [4][5][6], e.g. optical precision platforms [7,8], surgical devices [9][10][11], or micro-/meso-sized telescopes [10,12,13].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of torque density and power density of polymer-based ultrasonic motors via flexible usage of anisotropy in elastic property

Liu

Gao

et al. 2023

Smart Mater. Struct.

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The carbon-fiber-reinforced poly phenylene sulfide (PPS/CF), which exhibits low density, low energy dissipation, and relatively high elastic modulus among polymers, is a promising material as the vibrating body of lightweight ultrasonic motors (USMs). Interestingly, the flexible usage of the anisotropy in PPS/CF’s elastic property (induced by carbon fibers’ reinforcement) offers a new idea to enhance the torque densities and power densities of the polymer-based USMs. As the key issue of flexibly using the anisotropy, this study aims to accomplish the optimal arrangement of the carbon-fibers’ filling direction according to the structure, the vibration mode, and the piezoelectric material’s polarization direction of the PPS/CF-based motor by performing model construction, structural optimization, and experimental verification. Initially, the dynamic model capable of setting PPS/CF’s anisotropically elastic moduli with the changeable filling direction is established to analyze the vibration characteristics. Subsequently, to increase the vibration velocity, the stiffness, and the electromechanical coupling factors, the optimization is carried out for the PPS/CF-based ring-shaped vibrators, where the optimal angle between the filling direction and the vibrator’s bottom surface is estimated as 60°. Finally, a prototype of the PPS/CF-based vibrator 30 mm in diameter and 8.5 mm in height is fabricated to form a rotary motor, whose movement and load characteristics are investigated through experiments. At 250 V voltage and 24.42 kHz frequency, the motor yields the no-load rotation speed, the maximal torque, and the maximal output power of 99.3 r/min, 29.8 mNm, and 72 mW, respectively. Moreover, its torque density and power density reach respectively 7.1 Nm/kg and 17.1 W/kg, relatively high among the rotary motors with polymer vibrating bodies. This study validates the effectiveness of our idea and also provides a basic approach to design lightweight USMs that employ newly-developed materials with anisotropically elastic properties and good vibration characteristics.

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Section: Introductionmentioning

confidence: 99%

Enhancement of torque density and power density of polymer-based ultrasonic motors via flexible usage of anisotropy in elastic property

Liu

Gao

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Piezoelectric motor is a modern type of actuator that uses piezoelectric drive element as a vibration excitation and employs the friction effect to actuate the rotor. In the field of precision actuation, piezoelectric actuators play an important role in micro electro mechanical systems (MEMS), micro and nano positioning [1], [2], energy acquisition [3]- [5], aerospace [6], optical scanning [7]- [9], biomedical engineering [10]- [12], and 3D printing [13] etc.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Study of a Low Frequency Piezoelectric Motor With Natural Frequency Adjustment Method

Li,

Wang,

Peng

et al. 2023

IEEE Access

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A variable frequency piezoelectric motor is studied, which can generate rotational motion under the excitation of variable-mode vibration response units. Two variable-mode vibration response units fixed in the inclined plane are excited by the square wave and drive the friction disk to achieve the rotation and translation. Thus, the friction torque on the rotor changes periodically, and the rotor is driven to produce positive displacement output. By adjusting the mass distribution of the variable-mode piezoelectric wafer vibration response unit, the natural frequency of the low-frequency motor is adjustable. In order to achieve the maximum displacement output of the low-frequency motor, the simulation analysis is initially performed on the stiffness, mode, and vibration shape in line with the motion principle. Then the experiments of the variable-natural-frequency motion characteristics of the low frequency motor are carried out, and the maximum rotation speed of the designed piezoelectric motor is improved by the variablenatural-frequency motion characteristics and reaches 520 mrad/s.INDEX TERMS Piezoelectric motor, variable-natural-frequency, mass distribution.

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A 3D printed sandwich-type piezoelectric motor with a surface texture

Cited by 2 publications

References 24 publications

Enhancement of torque density and power density of polymer-based ultrasonic motors via flexible usage of anisotropy in elastic property

Enhancement of torque density and power density of polymer-based ultrasonic motors via flexible usage of anisotropy in elastic property

Mechanistic Study of a Low Frequency Piezoelectric Motor With Natural Frequency Adjustment Method

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