An inertial piezoelectric rotary actuator characterized by the motion without rollback

Ding, Mengru; Ma, Jijie; Hu, Yili; Li, Jian Ping; Wen, Jianming

doi:10.1088/1361-665x/aba177

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…According to the working principle of piezoelectric motors, it can be mainly classified into three types: ultrasonic motors [7,8], inchworm motors [9,10], and inertia impact motors [11][12][13]. In recent years, inertial impact motors have garnered significant attention from researchers due to their compact structure, simple control, large stroke, high resolution and structural versatility [14,15]. The inertial impact piezoelectric motor achieves linear or rotational motion by utilizing the inertial impact force generated during stator vibration [16], this type of piezoelectric motor can be classified into asymmetric electrical signal and asymmetric mechanical structure types based on different driving mechanisms.…”

Section: Introductionmentioning

confidence: 99%

An adjustable magnetic type resonant multimodal inertial impact motor

He,

Qian,

et al. 2024

Smart Mater. Struct.

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The conventional asymmetric inertial impact motors are driven by using the difference in inertial impact forces in the forward and reverse directions, implemented by using asymmetric drive signals, clamping blocks of different sizes or different materials, etc. An adjustable magnetic force type resonant inertia impact motor has been designed, assembled, and tested. The novel motor features a simple and compact structure, allowing for the attainment of different output performance by adjusting the magnetic force to meet various working requirements, and the reverse motion can be easily achieved by simply altering the orientation of the magnet located at the end of the piezoelectric vibrator, without requiring any additional structure The part of the motor’s structure was simulated and optimized using the finite element analysis software COMSOL6.0, with the first and second order vibration modes selected as the working mode. The experimental platform has been established to verify the working performance of the motor. Experimental results demonstrate that, under excitation voltage of 120 VP-P and frequency of 163 Hz, the maximum speed achieved by the motor prototype is 36.55 mm/s, with maximum load capacity of 320 g, and under excitation voltage of 40 VP-P and frequency of 928 Hz, the minimum step of the prototype reaching up to 134 nm. The motor proposed in this paper features an innovative asymmetric strong magnetic design, enabling high speed and load through the large amplitude of the piezoelectric vibrator in first-order vibration mode. As the amplitude gradually decreases in second and higher order modes, this motor achieves higher displacement resolution, making it has potential applications in high precision positioning and medical fields.

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Section: Introductionmentioning

confidence: 99%

An adjustable magnetic type resonant multimodal inertial impact motor

He,

Qian,

et al. 2024

Smart Mater. Struct.

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“…The stator is commonly composed of the piezoelectric ceramics and metal base, and the inverse piezoelectric effect of the piezoelectric ceramics is used (Ghosh et al, 2017; Huang et al, 2021; Li et al, 2022; Ma et al, 2023; Shivashankar et al, 2020). The piezoelectric actuator has many advantages like simple structure with no reduction gears, immune to electromagnetic interference, quick response, high accuracy, and self-locking when power-off (Chen et al, 2020; Ding et al, 2020; Sun et al, 2023; Wang et al, 2019b).…”

Section: Introductionmentioning

confidence: 99%

Development of a bipedal piezoelectric actuator with flexible mechanism based on the frog-leg inspiration

Cheng,

Sun,

Ning

et al. 2024

Journal of Intelligent Material Systems and Structures

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A new piezoelectric actuator with flexible mechanism using stick-slip principle based on the frog-leg inspiration is developed in this work. It utilizes bipedal design, and the slider can be driven by only one foot or two feet alternately, which depends on the exciting situation of the used two PZT stacks. The extension of the PZT stack can be transmitted into the vertical and horizontal deformations on two driving feet due to the frog-leg inspiration. They are used to press and actuate the slider. The configuration of this actuator is presented and its working principle is illustrated. Finite element simulation is carried out to investigate the statics performance. A prototype of the proposed actuator is fabricated and series of mechanical output characteristics are measured. The results demonstrated that the proposed actuator obtained the output velocity of 4.23 mm/s when the voltage and frequency were 100 V and 400 Hz. The maximum vertical loading capacity was 9 N under the voltage of 100 V. The corresponding results in this work validated the feasibility of the proposed bipedal piezoelectric actuator with flexible mechanism based on the frog-leg inspiration.

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“…In view of the backward motion of inertial actuators, Ding et al proposed to prevent rollback by means of asymmetric clamping and specific phase coordination. Simulation and experimental results show that the prototype is applicable to ensure that no rollback occurs during each two-step cycle [ 33 ]. Jia et al proposed a screwed type piezoelectric actuator with a hollow tube stator and rotor to directly drive a focusing lens to achieve a variation in the focal length.…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Clamping-Drive Alternating Operation Piezoelectric Actuator

2023

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In recent years, piezoelectric actuators, represented by inertial and inchworm actuators, have been widely applied because of their high accuracy and excellent responsiveness. Despite the development of various piezoelectric actuators, there remain some flaws in this technology. The sticking point is that the piezoelectric actuators based on the friction driving principle are prone to unwanted backward motion when outputting stepping motion. It is thus urgent to explore solutions from the perspectives of principle and structure. In this paper, a clamping-drive alternating operation piezoelectric actuator is proposed, the two feet of which are driven by two piezoelectric stacks, respectively. Due to double-foot alternate drive guide movement, backward movement is prevented in theory. By adopting the double-layer stator structure, integrated processing and assembly are facilitated. Meanwhile, a double flexible hinge mechanism is installed in the stator to prevent the drive foot from being overturned due to ineffectiveness and premature wear. In addition, the stator is equipped with the corresponding preload mechanism and clamping device. After the cycle action mechanism of one cycle and four steps is expounded, a model is established in this study to further demonstrate the principle. With the prototype produced, a series of experiments are performed. In addition, the amplitude of actuation of the stator is tested through amplitude experiment. The performance of the stator is evaluated by conducting experiments in the alternating step and single step actuation modes. Finally, the test results are analyzed to conclude that the actuator operating in either of these two modes can meet the practical needs of macro and micro actuation.

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An inertial piezoelectric rotary actuator characterized by the motion without rollback

Cited by 14 publications

References 31 publications

An adjustable magnetic type resonant multimodal inertial impact motor

An adjustable magnetic type resonant multimodal inertial impact motor

Development of a bipedal piezoelectric actuator with flexible mechanism based on the frog-leg inspiration

Design and Experiment of a Clamping-Drive Alternating Operation Piezoelectric Actuator

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