Article
Instruments & Instrumentation
Liang Wang, Heran Wang, Tinghai Cheng
Summary: This paper presents a compact stick-slip piezoelectric actuator based on a right triangle flexible stator. The actuator has a simple structure and its working principle is explained in detail through theoretical and simulation methods. Experimental results show that the actuator has the advantages of simple design and relatively better performance.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Chemistry, Analytical
Junhui Zhu, Siyuan Meng, Yong Wang, Ming Pang, Zhiping Hu, Changhai Ru
Summary: In this work, a novel cross-scale nanopositioning stage was proposed, which combines the advantages of piezoelectric stick-slip positioner and piezoelectric scanner techniques to achieve nanometer positioning accuracy and large motion range. The experimental results confirm the feasibility of the proposed stage and demonstrate its significant performance and potential for in situ SEM nanorobotic instrument systems.
Article
Automation & Control Systems
Guangda Qiao, Peng Ning, Xiao Xia, Yang Yu, Xiaohui Lu, Tinghai Cheng
Summary: In this study, a piezoelectric stick-slip actuator with an inertial block structure is proposed to achieve smooth motion by dynamically controlling the normal pressure. Simulation and experiments show that the prototype can achieve smooth motion under large pretightening displacement.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Peng Ning, Xiao Xia, Guangda Qiao, Shitong Yang, Wentao Ruan, Xiaohui Lu, Ruifang Zheng, Tinghai Cheng
Summary: A dual-mode excitation method (DMEM) is proposed to suppress the backward motion of piezoelectric stick-slip actuators, which significantly improves the output performance of the actuator. Experimental results show that DMEM can significantly reduce the backward rates, increase the velocities, and improve the loads of the actuator.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Review
Materials Science, Multidisciplinary
Guangda Qiao, Hengyu Li, Xiaohui Lu, Jianming Wen, Tinghai Cheng
Summary: This article introduces the working principle, excitation signals, and structural design progress of piezoelectric stick-slip actuators (PSSAs) with flexure hinge mechanisms (FHMs-PSSAs). It also presents several methods and design schemes to improve the performance. This article is of significant reference value for the future development of FHMs-PSSAs.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Liang Wang, Heran Wang, Shupeng Wang, Tinghai Cheng
Summary: A new piezoelectric stick-slip actuator based on stair type flexure hinge is proposed and developed, where the PZT stack generates elongation displacement and the stair type flexure hinge transmits the elongation into vertical and horizontal displacements. The actuator's working principle is clarified, and its static characteristics are investigated through theoretical and simulation methods. Experimental results demonstrate the feasibility of the developed prototype.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2023)
Article
Mechanics
Shitong Yang, Yuelong Li, Xiao Xia, Peng Ning, Wentao Ruan, Ruifang Zheng, Xiaohui Lu
Summary: This paper introduces a topology optimization method to design piezoelectric stick-slip actuators, which maximizes the output displacement/input displacement ratio while limiting parasitic displacement. The optimized driving mechanism structure significantly improves the performance of the actuator in terms of large-stroke motion.
ARCHIVE OF APPLIED MECHANICS
(2022)
Article
Chemistry, Analytical
Zheng Li, Zhirong Su, Liang Zhao, Haitao Han, Zhanyu Guo, Yuyang Zhao, Hexu Sun
Summary: A novel piezoelectric actuator with a two-stage flexure hinge structure is proposed in this study. It provides horizontal thrust and vertical clamping force, solving issues of unstable clamping force and insufficient load capacity in traditional piezoelectric actuators. Through structure optimization, the actuator can achieve a maximum speed of 338 mm/s and bear a load of about 3 kg.
Article
Automation & Control Systems
Zhichen Huo, Yanling Tian, Fujun Wang, Wei Zhang, Beichao Shi, Dawei Zhang
Summary: This article proposed a rotary platform based on the stick-slip principle for high precision angle adjusting, adopting a dual-driven working mode to achieve large circular motion stroke and high loading capacity. By designing a flexible mechanism with two driving feet and actuating piezoelectrics alternatively, the back-off phenomenon was effectively suppressed and loading capacity was improved. Theoretical analysis and finite element simulation were conducted on the flexible driving unit, and a dynamic model of dual-driven working mode was established in MATLAB/Simulink to investigate the influence of preloading coefficient and initial preloading force for design and optimization of stick-slip actuator. Further, a prototype was fabricated and experiments showed a maximum rotary speed of 48.3 mrad/s and loading capacity of 98.8 mN center dot m for the rotary platform.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Automation & Control Systems
Zhichen Huo, Yanling Tian, Fujun Wang, Wei Zhang, Beichao Shi, Dawei Zhang
Summary: This article presents a rotary platform based on the stick-slip principle, utilizing a dual-driven working mode to achieve high precision angle adjustment and improve loading capacity significantly.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Geosciences, Multidisciplinary
Kun Wang, Christopher W. Johnson, Kane C. Bennett, Paul A. Johnson
Summary: Machine learning models using seismic emissions can predict fault characteristics and slow slip. This study investigates whether the seismic/acoustic emission (AE) from laboratory experiments contains information about future friction behavior. The results show that AE signals do contain very near-term friction predictions, but the accuracy decreases as the future time window increases.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Mechanical
Zhaochen Ding, Jingshi Dong, Xiaoqin Zhou, Zhi Xu, Wen Qiu, Chuanliang Shen
Summary: In this study, a stick-slip piezoelectric actuator using the alternating stepping method was proposed to achieve smooth motion with a load. The prototype of the actuator was tested, and it showed stable output performance with good smoothness under no-load and horizontal load conditions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Zhichao Ma, Junming Xiong, Jiakai Li, Hongwei Zhao, Luquan Ren
Summary: A novel piezoelectric-thermal coupling bidirectional rotary actuator was developed based on a proposed biomimetic stick-slip motion principle, which could achieve both clockwise rotation and anticlockwise fallback effectively. The actuator demonstrated extraordinary rotation resolution and thermal-induced microscopic resolution, providing a new approach for improving rotation driving accuracy.
Article
Automation & Control Systems
Jianping Li, Shichu Chen, Lidong He, Jiwen Jian, Yili Hu, Jianming Wen, Song Chen, Junwu Kan
Summary: This article proposes a bionic type piezoelectric actuator based on the walking motion of L-shaped flexure mechanisms, which can improve motion efficiency and achieve large working stroke with high output load. By eliminating backward motion and using two flexure mechanisms for bionic walking motion, the motion speed and maximum load can be significantly improved.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Engineering, Electrical & Electronic
Dipika Berry, Tran Vy Khanh Vo, King Ho Holden Li, Tomasz Marek Lubecki, Amit Gupta
Summary: Piezoelectric actuators have the potential to provide a system with high specific power, accuracy, quick response, and resolution. This paper comprehensively reviews the development of stepping actuators, focusing on the improvement of working stroke and the enhancement of output force and motion speed. The challenges and feasible solutions for implementing these actuators in targeted applications are also discussed. This review aims to offer insights into the novel design of piezoelectric actuators for high-power applications in the future.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)