Filters








862 Hits in 4.3 sec

A flexible vibration probe based on PZT low-frequency drive mode

Weikang Zheng, Kai Tian, Junkang Guo, Zhigang Liu, Jun Hong
2021 IEEE Access  
NONLINEAR SUPPRESSION OF PZT LOW-FREQUENCY DRIVE BASED ON PSO A.  ...  Based on the body of a three-dimensional flexible probe [9] , this paper explores a measurement mode for lowfrequency vibration driven by piezoelectric actuators (PZT).  ... 
doi:10.1109/access.2021.3083986 fatcat:3zydcr3kcnf6loh2slzl4nwram

A simple robust controller for hysteresis and resonance compensation of piezoelectric actuators

Jinchuan Zheng, Minyue Fu
2012 2012 12th International Conference on Control Automation Robotics & Vision (ICARCV)  
To eliminate the loss of positioning accuracy due to these effects, we propose a simple two degree-of-freedom (2DOF) control scheme for the PZT actuators, which consists of a feedforward and a feedback  ...  The experimental results on an actual PZT nanopositioner show that the designed controller can be easily implemented and achieve superior performance for hysteresis and resonance compensation.  ...  The second mode, caused by the flexibility of the flexure hinge, has a relatively large resonance peak (10 dB) and is thus expected to induce significant vibrations to the stage motion.  ... 
doi:10.1109/icarcv.2012.6485172 dblp:conf/icarcv/ZhengF12 fatcat:hig7hnkvrjdd5aofy4mz5jzov4

The Roles of Piezoelectric Ultrasonic Motors in Industry 4.0 Era: Opportunities and Challenges [chapter]

Sahil P. Wankhede, Tian-Bing Xu
2021 Piezoelectric Actuators - Principles, Design, Experiments and Applications [Working Title]  
Piezoelectric Ultrasonic motors (USM) are based on the principle of converse piezoelectric effect i.e., vibrations occur when an electrical field is applied to piezoelectric materials.  ...  Recently many researchers have started focusing on Industry 4.0 or Fourth Industrial revolution phase of the industry which mostly emphasis on digitization & interconnection of the entities throughout  ...  A single-modal linear ultrasonic motor based on multi vibration modes of PZT ceramics.  ... 
doi:10.5772/intechopen.100560 fatcat:dzg4rucaljbkzfuvtr5yosb7wa

Development of tunable miniature piezoelectric-based scanners validated by the combination of two scanners in a direct image relay technique

Adam Harbi Shadfan, Michal Emanuel Pawlowski, Tomasz S. Tkaczyk
2016 Optical Engineering: The Journal of SPIE  
The diameter and length of the PZT and fiber, the attachment of the fiber to the PZT, as well as the driving signal determine the main characteristics of the scan-frequency and amplitude of vibration.  ...  the driving signal with a detector.  ...  While beneficial for not requiring any moving components, fiber bundles lack flexibility with a poor bend radius compared to a single-mode fiber as used in a PZT system.  ... 
doi:10.1117/1.oe.55.1.013104 pmid:28579655 pmcid:PMC5450973 fatcat:5pjg6mit6vfffk7laopqmlmhu4

Digitally Programmable Higher-order Harmonic Generation Using Nonlinear MEMS Resonator [article]

Gayathri Pillai, Sheng-Shian Li
2019 arXiv   pre-print
Here we report the first demonstration of a record-high harmonics generation over 100 tones using a thin-film Lead Zirconate Titanate flexural mode microresonator operating at CMOS compatible voltage levels  ...  A fully electrically interfaced chip-scale Micro-Electro-Mechanical System based higher-order harmonic generator has multitudes of applications as it can simultaneously facilitate monolithic integration  ...  In this work, a PZT-on-Silicon-based MEMS resonator is designed to operate in flapping mode along a controllable nonlinear regime for HHG demonstration.  ... 
arXiv:1910.00835v1 fatcat:6dkchbukurac7j5h6tq3ibifli

MEMS Ultrasound Transducers for Endoscopic Photoacoustic Imaging Applications

Haoran Wang, Yifei Ma, Hao Yang, Huabei Jiang, Yingtao Ding, Huikai Xie
2020 Micromachines  
Current PAI endoscopes based on pMUTs and cMUTs are also introduced and compared.  ...  In this article, the recent progress of pMUTs (thickness extension mode and flexural vibration mode) and cMUTs are reviewed and discussed with their applications in endoscopic PAI.  ...  Dangi et al. developed a thickness mode pMUT based on a 150 µm thick PZT ceramic for PAI applications [95].  ... 
doi:10.3390/mi11100928 pmid:33053796 pmcid:PMC7601211 fatcat:hf5jiyozl5hf3jfv4meqsgrfue

Synchronization of two passively mode-locked, picosecond lasers within 20 fs for coherent anti-Stokes Raman scattering microscopy

David J. Jones, Eric O. Potma, Ji-xin Cheng, Berndt Burfeindt, Yang Pang, Jun Ye, X. Sunney Xie
2002 Review of Scientific Instruments  
We report on the synchronization of two commercial picosecond Ti:sapphire lasers with unprecedented low temporal jitter between the pulse trains.  ...  We present detailed statistical analysis of the pulse jitter and CARS noise along with enhanced CARS vibrational images of polymer beads.  ...  This type of microscope enables chemically selective imaging based on vibrational sensitivity.  ... 
doi:10.1063/1.1492001 fatcat:whcxwx2clvhjdal2bibnlpjmmi

Bidirectional Active Piezoelectric Actuator Based on Optimized Bridge-Type Amplifier

Weiqing Huang, Junkai Lian, Mingyang Chen, Dawei An
2021 Micromachines  
Piezoelectric actuators based on bridge displacement amplifying mechanisms are widely used in precision driving and positioning fields.  ...  The classical bridge mechanism relies on structural flexibility to realize the return stroke, which leads to the low positioning accuracy of the actuator.  ...  Usually, the natural frequency of such a PZT actuator with only one end fixed is low.  ... 
doi:10.3390/mi12091013 pmid:34577656 pmcid:PMC8472702 fatcat:gkwvocal75e5lop42iatk4mghu

A Dynamic Micro Force Sensing Probe Based on PVDF

Qiangxian Huang, Kang Ni, Nan Shi, Maosheng Hou, Xiaolong Wang
2010 Sensors & Transducers  
Experiments are conducted to verify its dynamic performance like resonant frequencies, spring constant, quality factor and spatial sensitivity of this micro-force sensing probe.  ...  Driven by two symmetric aligned PZT actuators near its resonance, the membrane has high force and spatial sensitivity.  ...  Fig. 2 illustrates a typical frequency spectrum at the first vibrating mode of the membrane, which is used in amplitude modulation force sensor.  ... 
doaj:a514c75e50a64ec8ad4330082074a53f fatcat:cnkznklizfax5j2hxn2q42r7py

Vibrations of the "beetle" scanning probe microscope: Identification of a new mode, generalized analysis, and characterization methodology

Matthew J. Brukman, Robert W. Carpick
2006 Review of Scientific Instruments  
Therefore, the decreasing strength of the response at the pivot mode frequency to drive in R, X, and Y follows what we would predict based on the geometry, bolstering the conclusion that this frequency  ...  A schematic of our beetle AFM is shown in Fig. 1 and is based on the design by Dai et al. 6 The walker uses lead zirconate titanate ͑PZT͒ actuators for the legs ͑PZT 5A, Staveley Sensors, East Hartford  ...  APPENDIX As scanheads are made lighter, the effects of leg mass on the vibration frequencies will become more pronounced.  ... 
doi:10.1063/1.2183266 fatcat:e3u6pbvy2jey3jf4gd3zlrzekm

Experimental Research on Wind-Induced Flag-Swing Piezoelectric Energy Harvesters

Jianjun Liu, Xianghua Chen, Yujie Chen, Hong Zuo, Qun Li, Zeqi Lu
2021 Shock and Vibration  
The piezoelectric cantilever beam may vibrate in the wind field by affixing a flexible ribbon to the free end as the windward structure.  ...  When the piezoelectric cantilever beam is in a wind field, we should consider not only the influence of the wind field on piezoelectric beam but also the electromechanical coupling effect on it.  ...  [16] from Clemson University proposed an airflow-induced self-excited electrical device based on PZT ceramic in the same year.  ... 
doi:10.1155/2021/8496441 fatcat:2ntlg3njzjakvg25rwwicp7yqa

Development of a 2-DOF micro-motion stage based on lever amplifying mechanism

Kai Zhou, Yangmin Li
2014 2014 IEEE International Conference on Mechatronics and Automation  
A new type of displacement amplifying mechanism is introduced, which is based on driving and guiding principles of flexible hinges.  ...  This paper presents a micro planar motion stage based on flexure hinge that allows large ranges of motion along x and y direction.  ...  First mode is defined when the external excitation frequency is equal to the natural frequency of the object and the mode shape is called first mode shape or main vibration mode.  ... 
doi:10.1109/icma.2014.6885675 fatcat:g4dfij4y65cxdoi7gpfo4etsbq

Mechanically active materials in three-dimensional mesostructures

Xin Ning, Xinge Yu, Heling Wang, Rujie Sun, R. E. Corman, Haibo Li, Chan Mi Lee, Yeguang Xue, Aditya Chempakasseril, Yao Yao, Ziqi Zhang, Haiwen Luan (+7 others)
2018 Science Advances  
Systematic experimental and computational studies reveal the underlying characteristics and capabilities, including selective excitation of targeted vibrational modes for simultaneous measurements of viscosity  ...  to complex, hierarchical configurations, on planar or curvilinear surfaces.  ...  FEA predicts that the vibration amplitude is on the order of micrometers at the resonant frequency under a 1-V driving voltage.  ... 
doi:10.1126/sciadv.aat8313 pmid:30225368 pmcid:PMC6140627 fatcat:sgv3kmdswnasdljdsf4mta2cea

Structural Health Monitoring for Composite Materials [chapter]

Jian Cai, Lei Qiu, Shenfang Yuan, Lihua Shi, PeiPei Liu, Dong Liang
2012 Composites and Their Applications  
& off-line, low frequency (<1kHZ) vibration monitoring Strain-based method Resistance strain gauge E D E E E On-line, relying on loads FOS E D E E E Distribution measurement, on-line, rely  ...  Active vibration-based method Active vibration-based method is a classical SHM technique.  ... 
doi:10.5772/48215 fatcat:u6n2ey7ecncyjh6bc2r3kmylye

A Review of Application and Development Trends in Ultrasonic Motors

Xiaoniu Li, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, Zhiyi Wen, Botao Jia, Teng Cao, De Yu, Dawei Wu, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China, State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2020 ES Materials & Manufacturing  
and the influence on ultrasonic motor design resulting from the breakthrough in advanced processing and preparation technology, structural and functional integration technology, low voltage drives and  ...  This paper conducts a review of research on the application status and progress at the frontier of research on ultrasonic motors.  ...  Based on the micro powder blasting of homogeneous PZT sheets made by the use of single-sided transverse interdigitated electrodes, the motor stators adopted a simple manufacturing technology to drive in  ... 
doi:10.30919/esmm5f933 fatcat:mwmdrprsdbcc5osh3x3662f4jm
« Previous Showing results 1 — 15 out of 862 results