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Applied Sciences
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Advanced Ultrasonic Motors and Sensors: Design, Optimization and Applications
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Advanced Ultrasonic Motors and Sensors: Design, Optimization and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: 10 June 2025 | Viewed by 3673

Special Issue Editors

Dr. Lin Yang

E-Mail Website
Guest Editor
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Interests: ultrasonic motor; beat traveling wave; precision drive and control; nonlinear dynamics simulation; space application
Prof. Dr. Jiantao Zhang

E-Mail Website
Guest Editor
School of Mechatronic Engineering and Automation, Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai 200444, China
Interests: ultrasonic motor; piezoelectric energy harvesting and sensing; advanced robotics; artificial intelligence detection

Special Issue Information

Dear Colleagues,

This Special Issue is devoted to introducing new theories, new methods, new technologies, and their applications in the field of advanced ultrasonic motors and sensors. The ultrasonic motor is a micro motor developed in the past 40 years, and it has small size, light weight, no electromagnetic interference, shape diversification, and other unique advantages. It also has a wide range of applications in space satellite drive mechanisms, high-end medical equipment, optics, robotics, micro terminal equipment, and other fields. In addition, ultrasonic sensors have been widely used, in recent years, in the fields of robotics, minimally invasive surgery (MIS), health monitoring, human–computer interaction, smart prosthetics, bionics, energy harvesting, and surface detection. In addition, application fields are constantly expanding.

In the current era, as there are more in-depth applications for ultrasonic motors and sensors, there are more scientific and engineering problems, requiring researchers to invest a lot of energy and time into exploring and solving them. They also lay a solid foundation for future large-scale applications of ultrasonic motors and sensors. We welcome contributions on topics such as the structural design and optimization of ultrasonic motors and sensors, drive and control, complex environment adaptability, and application case studies.

Dr. Lin Yang
Prof. Dr. Jiantao Zhang
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. Applied Sciences is an international peer-reviewed open access semimonthly 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.

Keywords

  • structural design and optimization of ultrasonic motors and sensors
  • mechanism and theory
  • driving methods and control strategies
  • piezoelectric materials and friction materials
  • dynamic modeling
  • friction and wear
  • contact simulation
  • fault diagnosis and remaining life
  • application research of ultrasonic motors and sensors

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Published Papers (3 papers)

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Research

14 pages, 5690 KiB  
Article
Investigation of Flow Characteristics in Valveless Piezoelectric Pumps with Airfoil Baffles at Varying Angles of Attack
by Jun Huang, Hiba Affane, Bo Zhang, Ming Kuang, Jian Xiong and Siyao Zhang
Appl. Sci. 2025, 15(1), 445; https://doi.org/10.3390/app15010445 - 6 Jan 2025
Viewed by 572
Abstract
To investigate the impact of airfoil angle of attack on the output performance of a valveless piezoelectric pump with airfoil baffles, this study conducted comprehensive performance tests and full-flow field simulations of piezoelectric pumps across a range of angles. At a driving voltage [...] Read more.
To investigate the impact of airfoil angle of attack on the output performance of a valveless piezoelectric pump with airfoil baffles, this study conducted comprehensive performance tests and full-flow field simulations of piezoelectric pumps across a range of angles. At a driving voltage of 100 V and with a Clark Y airfoil set at an angle of 0°, the piezoelectric pump reached a peak output flow rate of 200.7 mL/min. An increase in the angle of attack corresponded to a decline in both the maximum output flow rate and the maximum back pressure of the pump. Flow field simulation results demonstrated that an increased airfoil angle of attack led to a gradual increase in entropy production within the piezoelectric pump. Turbulent dissipation and wall entropy production were found to be more pronounced compared to viscous entropy production. High turbulent dissipation was primarily observed at the pump chamber inlet, the trailing edges of the airfoils in both the inlet and outlet pipes, and the outlet bend. As the angle of attack increased, the complexity of the vortex core structures within the flow field escalated as well. Regions with significant wall entropy production were notably concentrated at the outlet bend. Full article
(This article belongs to the Special Issue Advanced Ultrasonic Motors and Sensors: Design, Optimization and Applications)
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13 pages, 17782 KiB  
Article
Development of an Inertial Linear Ultrasonic Motor with a Double-Stator Structure Based on Bending Mode
by Lin Yang, Yue Xiong, Xinwei Hong, Jiaquan Wen, Jie Zhang and Rongcheng Zhao
Appl. Sci. 2024, 14(18), 8533; https://doi.org/10.3390/app14188533 - 22 Sep 2024
Viewed by 912
Abstract
An inertial linear ultrasonic motor with a novel double-stator structure is proposed for achieving higher performance and resolution in this paper. Utilizing a symmetrical structure and single sawtooth wave signal, the prototype is capable of outputting effective linear motion based on inertial movement. [...] Read more.
An inertial linear ultrasonic motor with a novel double-stator structure is proposed for achieving higher performance and resolution in this paper. Utilizing a symmetrical structure and single sawtooth wave signal, the prototype is capable of outputting effective linear motion based on inertial movement. The validity and rationality of the prototype are investigated by conducting finite element analyses. The experimental setups are built up to acquire the output characteristics of the motor. The experimental results indicate that the motor can achieve a maximum output velocity of 8.746 mm/s and thrust force of 1.645 N, which is almost twice the output performance of a motor with a single stator. The displacement solution of the motor can be adjusted by changing the amplitude of the voltage, with a resolution of 27 nm. Simultaneously, the relationships between the output characteristics and the input parameters are measured and analyzed during the experiments. Compared to the actuators with complex structures and multi-signal drives, the proposed motor exhibits the merits of higher output performance with the double-stator structure, providing an alternative direction for the further development of the inertial linear ultrasonic motor. Full article
(This article belongs to the Special Issue Advanced Ultrasonic Motors and Sensors: Design, Optimization and Applications)
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23 pages, 10219 KiB  
Article
Testing of Indoor Obstacle-Detection Prototypes Designed for Visually Impaired Persons
by Radu Păpară, Loredana Grec, Ioana-Adriana Potarniche and Ramona Gălătuș Voichița
Appl. Sci. 2024, 14(5), 1767; https://doi.org/10.3390/app14051767 - 21 Feb 2024
Cited by 1 | Viewed by 1448
Abstract
Outdoor solutions aiding the navigation of visually impaired individuals can seamlessly transition to indoor environments. Take, for instance, the adaptation of special lanes and configurations on the floor. However, these existing solutions fall short when it comes to addressing obstacles above ground level, [...] Read more.
Outdoor solutions aiding the navigation of visually impaired individuals can seamlessly transition to indoor environments. Take, for instance, the adaptation of special lanes and configurations on the floor. However, these existing solutions fall short when it comes to addressing obstacles above ground level, such as open windows, as highlighted in a previous article on the use of ultrasonic glove for visually impaired users. In response, the present proposal is a user-friendly, cost-effective solution that is capable of detecting elevated obstacles. Importantly, this solution aligns with a user’s language preferences, eliminating the need for learning new languages or possessing IT skills. Users simply specify their desired language for the prototype to communicate in, ensuring a personalized experience. The system alerts users to the presence of obstacles through varying levels of warning, calculated based on the distance between the obstacle and the user’s current position. This approach not only enhances safety but also prioritizes accessibility and ease of use. Full article
(This article belongs to the Special Issue Advanced Ultrasonic Motors and Sensors: Design, Optimization and Applications)
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