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Retraction

RETRACTED: Yang et al. Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557

1
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2
Innovation Academy for Microsatellites of Chinese Academy of Sciences, Shanghai 201210, China
3
Nuaa Super Control Technology Co., Ltd., Nanjing 211100, China
*
Author to whom correspondence should be addressed.
Micromachines 2025, 16(9), 1041; https://doi.org/10.3390/mi16091041
Submission received: 25 August 2025 / Accepted: 1 September 2025 / Published: 11 September 2025
The journal retracts the article “Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor” [1].
Following the article’s publication, the authors contacted the editorial office regarding the concerns related to biased simulation settings and the accuracy of the data presented in this study [1].
Adhering to our standard procedure, an investigation was conducted by the Editorial Office and the Editorial Board that confirmed the presence of a scientific error that created a significant mismatch between the simulation and experimental outcomes, particularly affecting the friction and contact behavior between stator and mover. As a result, the Editorial Board and the authors agreed that these errors undermine the validity of the overall findings presented in the article, and therefore have decided to retract this article as per MDPI’s retraction policy (https://www.mdpi.com/ethics#_bookmark30).
This retraction was approved by the Section Editor-in-Chief Micromachines.
The authors agreed to this retraction.

Reference

  1. Yang, L.; Yao, K.; Ren, W.; Chen, L.; Yang, M.; Zhao, R.; Tang, S. RETRACTED: Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557. [Google Scholar] [CrossRef] [PubMed]
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MDPI and ACS Style

Yang, L.; Yao, K.; Ren, W.; Chen, L.; Yang, M.; Zhao, R.; Tang, S. RETRACTED: Yang et al. Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557. Micromachines 2025, 16, 1041. https://doi.org/10.3390/mi16091041

AMA Style

Yang L, Yao K, Ren W, Chen L, Yang M, Zhao R, Tang S. RETRACTED: Yang et al. Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557. Micromachines. 2025; 16(9):1041. https://doi.org/10.3390/mi16091041

Chicago/Turabian Style

Yang, Lin, Kaixi Yao, Weihao Ren, Liang Chen, Mojian Yang, Rongcheng Zhao, and Siyu Tang. 2025. "RETRACTED: Yang et al. Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557" Micromachines 16, no. 9: 1041. https://doi.org/10.3390/mi16091041

APA Style

Yang, L., Yao, K., Ren, W., Chen, L., Yang, M., Zhao, R., & Tang, S. (2025). RETRACTED: Yang et al. Design and Dynamic Simulation of a Novel Traveling Wave Linear Ultrasonic Motor. Micromachines 2022, 13, 557. Micromachines, 16(9), 1041. https://doi.org/10.3390/mi16091041

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