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Actuators
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Piezoelectric Ultrasonic Actuators and Motors
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Piezoelectric Ultrasonic Actuators and Motors

A special issue of Actuators (ISSN 2076-0825). This special issue belongs to the section "Precision Actuators".

Deadline for manuscript submissions: 25 September 2024 | Viewed by 7605

Special Issue Editors

Prof. Dr. Junkao Liu

E-Mail Website
Guest Editor
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
Interests: piezoelectric actuator; ultrasonic actuators; ultrasonic motors; piezoelectric micro-jet; piezoelectric robotic; piezoelectric printing
Dr. Kai Li

E-Mail Website
Guest Editor
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
Interests: piezoelectric robot; piezoelectric ink-jet; piezoelectric fluid controlling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Piezoelectric ultrasonic actuators and motors constitute a classic field that receives long-lasting interest and concerns due to features such as compact size, fast response, high resolution, easy fabrication, no electromagnetic interference, self-locking, etc. The research interests of ultrasonic motors and actuators have jumped sharply in the last 5–10 years. They have proved to be promising candidates for applications for micro-robots, optics devices, precision manufacturing, and extreme environments (aerospace, deep sea, high-intensity magnetic). However, the wear, heating, fluctuation at low speed, aging characteristic, lifetime, and reliability are challenging for the piezoelectric ultrasonic actuators and motors. This Special Issue aims to provide a forum for the scholars and industry developers to exchange ideas, recent insights, and achieved results related but not limited to the following topics:

•    Novel operating principle and design of piezoelectric ultrasonic motors and actuators;
•    Multi-DOF ultrasonic motors;
•    Modeling and control of ultrasonic motors;
•    Applications of ultrasonic motors, especially for special environments;
•    Novel methods for reducing wear and improving lifetime.

Prof. Dr. Junkao Liu
Dr. Kai Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Actuators is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (4 papers)

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Research

11 pages, 7848 KiB  
Article
A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost
by Rui Ye, Junbiao Chen, Shuxiang Dong and Bing Li
Actuators 2023, 12(9), 345; https://0-doi-org.brum.beds.ac.uk/10.3390/act12090345 - 28 Aug 2023
Viewed by 1287
Abstract
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high power consumption of existing drivers makes them [...] Read more.
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high power consumption of existing drivers makes them unsuitable for use in portable devices. In this paper, a bidirectional four-switch buck–boost converter (FSBBC) and Proportional–Integral (PI)–Proportional (P) feedback control are proposed to implement a driver in a high-capacitance piezoelectric actuator which is capable of recovering the energy stored in the high-capacitance load and increasing efficiency. The FSBBC offers an extended input voltage range, rendering significant technological advantages in diverse applications such as automobiles, laptops, and smartphones. By implementing specific control strategies, the FSBBC not only outperforms conventional buck–boost converters in boosting performance, but also ensures that the output and input voltages retain the same polarity. This effectively addresses the polarity inversion challenge inherent to traditional buck–boost circuits. Within the FSBBC, the significant reduction in voltage stress endured by the MOSFET effectively minimizes system costs and size and enhances reliability. The proposed system was simulated in Simulink, which was combined with testing on a field-programmable gate array (FPGA). The driver is capable of driving capacitors of up to 2.9 μF, with 80 Vpp output and 2.75% total harmonic distortion (THD) observed in the test. Full article
(This article belongs to the Special Issue Piezoelectric Ultrasonic Actuators and Motors)
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19 pages, 14219 KiB  
Article
Research on Self-Priming Piezoelectric Microjet and Its Ejection Performance Control
by Tiyuan Shan, Xiaosheng Wu, Huajun Zhou, Xindi Lin and Bin Yang
Actuators 2023, 12(7), 276; https://0-doi-org.brum.beds.ac.uk/10.3390/act12070276 - 07 Jul 2023
Viewed by 1184
Abstract
The inkjet printing technology, based on piezoelectric microjet, realizes the high-efficiency processing of special-shaped structures, and has the advantages of high precision, high efficiency, and the ability to manufacture arbitrary complex parts. In this paper, a self-priming piezoelectric micro-jet device is proposed and [...] Read more.
The inkjet printing technology, based on piezoelectric microjet, realizes the high-efficiency processing of special-shaped structures, and has the advantages of high precision, high efficiency, and the ability to manufacture arbitrary complex parts. In this paper, a self-priming piezoelectric micro-jet device is proposed and its structure and microjet process are described. ANSYS two-phase two-way fluid-structure coupling simulation analysis is carried out, and the mechanism of the piezoelectric microjet is described in detail. The effects of voltage amplitude, input signal frequency, nozzle diameter, and oil viscosity on the ejection performance of the device are studied, and a set of effective control methods are summarized. Finally, the correctness of the piezoelectric microjet mechanism and the feasibility of the proposed self-priming piezoelectric micro-jet device are verified by experiments, and its ejection performance is tested. The experimental results are consistent with the ANSYS simulation results, which verifies the correctness of the experiment. Full article
(This article belongs to the Special Issue Piezoelectric Ultrasonic Actuators and Motors)
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13 pages, 24958 KiB  
Article
Achieving Full Forward Flow of Valveless Piezoelectric Micropump Used for Micro Analysis System
by Kai Li, Xianxin Zhou, Haoyuan Zheng, Biao Liu, Shuo Chen, Weishan Chen and Junkao Liu
Actuators 2022, 11(8), 218; https://0-doi-org.brum.beds.ac.uk/10.3390/act11080218 - 04 Aug 2022
Cited by 2 | Viewed by 2083
Abstract
The valveless piezoelectric micropump has the advantages of simple structure, high precision and low cost, which can realize the directional transport of micro-fluid and wildly be applied in a micro analysis system. However, backflow at the outlet cannot be avoided due to the [...] Read more.
The valveless piezoelectric micropump has the advantages of simple structure, high precision and low cost, which can realize the directional transport of micro-fluid and wildly be applied in a micro analysis system. However, backflow at the outlet cannot be avoided due to the limitation of its working mechanism. Large reflux rate can increase the volume control accuracy per cycle, but reduces the stability of the micro analysis system. In order to achieve a full forward flow, which reduce the influence of backflow on the system’s stability, the reflux characteristics of the designed valveless piezoelectric micropump were studied. The condition proposed, which should be satisfied for obtaining full forward flow, is that the reflux rate should be less than 50%. The influence of relations between the size of the key structures and pumping characteristics are established, and the references for structural parameter selection to reduce backflow and achieve full forward flow are given. This paper highlights the methods of controlling the pumping performance and achieving full forward flow, based on structural parameter selection analysis and adjusting excitation. The reflux rate can be reduced to 5% when the inlet angle is increased to 9°. The experimental results verify the validity of the obtained results and the proposed methods of control. This work provides important references for applying valveless piezoelectric micropumps in micro analysis and precision-driven systems. Full article
(This article belongs to the Special Issue Piezoelectric Ultrasonic Actuators and Motors)
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14 pages, 6600 KiB  
Article
Influences of Parameter Deviation on the Vibration Isolation System of an End Effector
by Henan Song, Xiaobiao Shan, Han Yu, Guangyan Wang and Jizhuang Fan
Actuators 2022, 11(5), 133; https://0-doi-org.brum.beds.ac.uk/10.3390/act11050133 - 09 May 2022
Viewed by 2082
Abstract
The vibration problem influences the precision of the equipment. However, some vibration isolation systems (VISs) with the perfect theoretical and simulation results are still unable to suppress the vibration well, resulting in the damage during the operation, such as the phenomenon of fragments [...] Read more.
The vibration problem influences the precision of the equipment. However, some vibration isolation systems (VISs) with the perfect theoretical and simulation results are still unable to suppress the vibration well, resulting in the damage during the operation, such as the phenomenon of fragments for the end effector of a glass substrate handling robot. Therefore, this paper focuses on the glass substrate handling robot in actual production and simplifies the VIS into a 2D (2 degree) system. From the analysis of the deviation of material parameters and installation deviations between vibration isolators, this paper concludes that, as long as there is a deviation, the vibration isolation performance of the system will be reduced. Through the mutually verified theory, simulation, and experimental structure, this paper also presents that the resonance frequency increase factor of the vibration isolation system is approximately the deviation. As for the end effector, the distance of the two vibration isolations is 579.4 mm. The change of the load does not change the isolation frequency of the same system, but the resonance amplitude will increase. The results of this study can supervise the installation and selection of vibration isolators in VISs. At the same time, the reasons for the weak vibration isolation performance of some systems are explained. Full article
(This article belongs to the Special Issue Piezoelectric Ultrasonic Actuators and Motors)
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