An Easily Fabricated Linear Piezoelectric Actuator Using Sandwich Longitudinal Vibrators With Four Driving Feet

Chen, Weishan; Tian, Xinqi; Xue, Kailei; Chen, Shuo; Yu, Hongpeng

doi:10.1109/access.2018.2889807

Cited by 7 publications

(3 citation statements)

References 59 publications

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“…The experimental results show that the proposed algorithm always provided smaller variations than the low-pass filter, approximately 0.2 degrees of standard deviation. Reference [ 35 ] proposed and tested a piezoelectric actuator based on three sandwich longitudinal vibrators. Two horizontal vibrators were parallel to each other and orthogonal to the vertical vibrator.…”

Section: Introductionmentioning

confidence: 99%

Adjustable Vibration Exciter Based on Unbalanced Motors

Osadchyy

Nazarova

Hutsol

et al. 2023

Sensors

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In European industry, such as metallurgical, mining and processing, construction, food, and chemical, vibration exciters are used, which indicates their wide and, in some cases, unique technological capabilities. The most common are electromagnetic and unbalanced vibration exciters. The advantages of electromagnetic vibration exciters include the ability to control the amplitude of the vibration by changing the electrical power supplied; the disadvantages are high material consumption. However, unbalanced vibration exciters have low energy efficiency, which is associated with difficult start-up conditions and with an overestimated mechanical power of the vibration exciter in relation to the power required by the technology itself, which is due to the need to minimize the effect of the technological load on the operating mode of the vibrating unit. Adjusting the amplitude of the disturbing force of unbalanced vibration exciters, regardless of the vibration frequency, will make it possible to reduce the installed power of the unit by passing the resonant frequency with a minimum disturbing force and compensating for the effect of the process load by means of a closed-loop electric drive. In the course of the study, an analytical description of the interaction of the rotating unbalances located on a common movable platform was obtained. On the basis of these analytical dependencies, a mathematical model was developed that takes into account the dynamic characteristics of a frequency-controlled asynchronous electric drive of a closed-loop control system for the mutual arrangement of rotating unbalances. The simulation results confirmed the possibility of using the specified electric drive to control the oscillation amplitude directly in the process of operation of a four-unbalanced vibration exciter. A physical experiment was carried out to determine the transient processes of changing the angular velocity of an induction motor with an abrupt change in the frequency converter setting. On the basis of this experiment, the previously created mathematical model was refined in terms of describing the dynamic parameters of the electric drive. The proposed structure of the control system, the performance of which has been confirmed by mathematical modeling, makes it possible to implement an adjustable four-unbalanced vibration exciter using single commercially available asynchronous vibrators.

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Section: Introductionmentioning

confidence: 99%

Adjustable Vibration Exciter Based on Unbalanced Motors

Osadchyy

Nazarova

Hutsol

et al. 2023

Sensors

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“…Generally, inchworm piezoelectric motors utilize piezoelectric stacks in quasi-static and non-resonant state, so it can only operate at a very low speed of the order of mm/s. 9) In recent years, inchworm piezoelectric motors operated in resonant state have been proposed [9][10][11][12] in order to overcome such a drawback of low speed. Some of these resonant-type inchworm piezoelectric motors have achieved driving speeds exceeding 1 m s −1 ; however their stators have a complex and large structure which consists of three or more bolt-clamped Langevin transducers.…”

Section: Introductionmentioning

confidence: 99%

Rod drive type ultrasonic linear motor with quadruped stator

Tanoue

Morita

2020

Jpn. J. Appl. Phys.

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Piezoelectric motors exhibit advantages such as high force density and linear motion with simple and compact configuration compared to electromagnetic motors. Among them, an inchworm mechanism provides high holding force and thrust, and high positioning accuracy. However, the drawback is its complicated structure combining multiple transducers. On the other hand, an ultrasonic linear motor with quadruped stator can achieve the inchworm movement by using a single rectangular plate transducer, which is advantageous for miniaturization. In this study, we propose a novel ultrasonic linear motor that drives a slider rod inside the quadruped stator to realize a compact linear motion system. A prototype was fabricated and an excitation of each vibration mode and a bidirectional drive was confirmed via experiments. Maximum no-load speed of 258 mm s−1 and maximum thrust of 490 mN were obtained with total length of the stator transducer of 20 mm and its weight of 4.9 g.

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“…The piezoelectric actuators usually use the inverse piezoelectric effect to convert the electrical energy into the vibration mechanical energy [1], and have long been investigated extensively and applied successfully in lots of fields [2]- [4]. Compared with the traditional electromagnetic motors, the piezoelectric actuators have the advantages of no electromagnetic radiation, self-locking, high power weight ratio, high displacement resolution [5]- [8], making it suitable for robots [9]- [11], high-precision machines [12]- [15], nanopositioning stages [16]- [18], optical instruments [16]- [18], bioengineer [19]- [21], and invasive surgery [12], [25], [26].…”

Section: Introductionmentioning

confidence: 99%

Design and Experiments of a Novel Rotary Piezoelectric Actuator Using Longitudinal–Torsional Convertors

et al. 2019

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A bolt-clamped type piezoelectric actuator, which could output rotary motions by using longitudinal-torsional hybrid vibration, was proposed and tested in this paper. The proposed actuator is mainly composed of a piezoelectric stack, a leftward bending longitudinal-torsional convertor (LBLTC), and a rightward bending longitudinal-torsional convertor (RBLTC). The piezoelectric stack, which is clamped between the LBLTC and RBLTC, is utilized to generate longitudinal vibration under exciting of a sinusoidal signal with a certain frequency. The two convertors transform part of the longitudinal vibration generated by the piezoelectric stack into the torsional vibration and generate elliptical motions at the ends of the driving tips, which can push the rotors to rotate step by step. The structure of the proposed actuator was designed, and the working principle for the rotary driving was analyzed. Then, modal, harmonic, and transient analyses were carried out by the finite element method to determine the structural dimensions of the convertors and verify the movement trajectories of the driving tips. Finally, a prototype was fabricated, and its vibration and output characteristics were tested. The experimental results indicated that the maximum no-load speed and maximum torque of the actuator were 342 r/min and 0.072 N•m under the preload of 11 N and the voltage of 300 V P-P. The simulation and experimental results verified the feasibility of the proposed actuator.

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An Easily Fabricated Linear Piezoelectric Actuator Using Sandwich Longitudinal Vibrators With Four Driving Feet

Cited by 7 publications

References 59 publications

Adjustable Vibration Exciter Based on Unbalanced Motors

Adjustable Vibration Exciter Based on Unbalanced Motors

Rod drive type ultrasonic linear motor with quadruped stator

Design and Experiments of a Novel Rotary Piezoelectric Actuator Using Longitudinal–Torsional Convertors

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