发布求助
文献互助 智能选刊 最新文献

2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)最新文献

筛选
英文 中文
Research on output characteristics of linear ultrasonic motor parallel rotating platform 直线超声电机并联旋转平台输出特性研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167201
Song-fei Su, Z. Yao, Z. Ge, Ming Ye
{"title":"Research on output characteristics of linear ultrasonic motor parallel rotating platform","authors":"Song-fei Su, Z. Yao, Z. Ge, Ming Ye","doi":"10.1109/SPAWDA.2011.6167201","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167201","url":null,"abstract":"As several linear ultrasonic motors worked together could increase the thrust, the research on linear ultrasonic motors parallel technology received attention. Preliminary study suggested that motor output performances were non-linear superposition relationship in parallel condition, but the research was not in-depth. In this paper, the linear ultrasonic motors output characteristics in parallel condition were researched. Designed a parallel rotating platform composed by three U-shape linear ultrasonic motors, and researched the relationship of output performances between single motor and the parallel rotating platform in different driving modes and conditions. Compared the advantages and disadvantages of different driving ways and established motion mechanics model of parallel rotating platform. The experiments showed that the experimental results agreed well with the theoretical analyses.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131238063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis and experiment of a novel linear micro ultrasonic motor based on shear vibration mode 基于剪切振动模式的新型直线微型超声电机的分析与实验
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167181
Hai-peng Chen, Chao Chen, M. Guo
{"title":"Analysis and experiment of a novel linear micro ultrasonic motor based on shear vibration mode","authors":"Hai-peng Chen, Chao Chen, M. Guo","doi":"10.1109/SPAWDA.2011.6167181","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167181","url":null,"abstract":"A novel linear micro ultrasonic motor, which is actuated based on shear stress mode (d15 converse piezoelectric effect), is presented. Firstly shear vibration mode of piezoelectric stator is analyzed. The elliptical trajectory of driving point on the stator induced by shear vibration modes is discussed. Then the dynamical analysis of piezoelectric stator is carried out, and the complete structure design for the proposed linear micro ultrasonic motor ultrasonic motor is given. Finally the prototype is manufactured, and the mode experiment of piezoelectric stator is conducted. The experimental results show that the calculated vibration modes can be excited successfully.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127278077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature compensated piezoelectric bulk acoustic wave filters 温度补偿压电体声波滤波器
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167279
Nianchu Hu, Zhixin Zhang, Jin Tao, Chong Zhou, Hao Zhang
{"title":"Temperature compensated piezoelectric bulk acoustic wave filters","authors":"Nianchu Hu, Zhixin Zhang, Jin Tao, Chong Zhou, Hao Zhang","doi":"10.1109/SPAWDA.2011.6167279","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167279","url":null,"abstract":"Satellite radio equipments require efficient radio-frequency (RF) filtering solutions to solve issues such as narrow bandwidth, small size, frequency of temperature independence, and etc. A band pass filter based on temperature stable bulk acoustic wave resonator has been designed, fabricated and tested. The filter presents decent insertion loss, very sharp skirt, and excellent temperature stability.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121826953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A rapid-response saw-based sensor for H2S detection 用于H2S检测的快速响应锯片传感器
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167267
Honglang Li, Xiudong Wang, Yong Liang, Shitang He
{"title":"A rapid-response saw-based sensor for H2S detection","authors":"Honglang Li, Xiudong Wang, Yong Liang, Shitang He","doi":"10.1109/SPAWDA.2011.6167267","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167267","url":null,"abstract":"This paper developed a method to improve the response velocity of Surface acoustic wave (SAW)-based H2S sensor employing SnO2 film. Due to a SAW-based detector is endowed with inherent high sensitivity, it is adopted to detect low-level inorganic gas. However, this detector's speed of response and recovery is very low when it is operating in room temperature. Our work is motivated by the observation that the sensor inertia can be accelerated by changing working temperature and constructing digital sensor model. Firstly, A set of evaluation experiments are established. SnO2/CuO composite film and 36°YX-LiTaO3 are adopted as waveguide layer and substrate of love wave sensor respectively. Secondly, a sensor's response speed is measured when it works at specified 160°C. Experimental result shows good repeatability for sensing H2S. The response in 160°C shows more than 100 times of that in home temperature. Lastly, a simple sensor model is constructed to determine concentration value in a relative short time. The fitting results show that the whole response procedure can be predicated in shorter time for six times. The evaluation model is demonstrated as a promising method to accelerate the response velocity for SAW-based H2S sensor.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"18 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental study of a hybrid vibration energy harvesting mechanism 混合振动能量收集机构的实验研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167190
Song-mao Chen, Jun-hui Hu
{"title":"Experimental study of a hybrid vibration energy harvesting mechanism","authors":"Song-mao Chen, Jun-hui Hu","doi":"10.1109/SPAWDA.2011.6167190","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167190","url":null,"abstract":"In this paper, a novel hybrid vibration energy harvesting mechanism integrating effects of both electromagnetic induction and piezoelectricity have been presented. The structure topologically consists of three modules. The first is electromagnetic induction module comprising of two pairs of bulk NdFeB permanent magnet and one hand-wound enameled copper coil. The second is piezoelectric energy harvesting module utilizing impact mode. The last is another piezoelectric energy harvesting module based on impact-induced vibration. Mounting a manufactured prototype of the proposed generator onto an electric shaker, preliminary experimental tests have been performed; electric energy stored in capacitor via bridge rectifier was measured and analyzed. It was found that, in 30 seconds, the harvested electric energy was 57.2 µJ for impacted piezoelectric components, 429.3 µJ for piezoelectric components under impact-induced vibration and 6547.2 µJ for the electromagnetic induction component, respectively, at the vibration excitation amplitude of 4.5 mm and frequency of 13 Hz.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127063200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Research on variable camber wing driven by ultrasonic motors 超声马达驱动变弧度机翼的研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167177
Weidong Liu, Hua Zhu
{"title":"Research on variable camber wing driven by ultrasonic motors","authors":"Weidong Liu, Hua Zhu","doi":"10.1109/SPAWDA.2011.6167177","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167177","url":null,"abstract":"Taking the Advantages of ultrasonic motors such as high torque, small size, light weight, self-lock and rapid response, a kind of variable camber wing driven by ultrasonic motors is designed in this paper. The morphing wing is suitable for small UAV of low Mach number because it is able to obtain a good aerodynamic efficiency. Parallelogram linkage driven by ultrasonic motor is designed and applied to the variable camber wing to drive the trailing edge. Distributed layout of the mechanism is adopted and continuous deformations can be produced, so various aerodynamic profiles suitable for different flying states can be obtained. The motors are arranged independently in the wing panel, and individually drive the wing sections to morph separately. The whole morphing mechanism is placed in the interior of the wing and the wing surface is covered with smooth flexible skin in order to decrease the aerodynamic drag.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131023486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Numerical study on two circle void flaws in cylinders 圆柱体两种圆孔缺陷的数值研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167215
G. Zheng, Bin Wu, C. He
{"title":"Numerical study on two circle void flaws in cylinders","authors":"G. Zheng, Bin Wu, C. He","doi":"10.1109/SPAWDA.2011.6167215","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167215","url":null,"abstract":"In this article, three-dimensional Kirchhoff inverse scattering method is modified to convenient form for a cylindrical specimen that includes three-dimensional defects including two-circle voids. Ultrasonic measurements are carried out. The measurement area in the modified methods is restricted in the plane perpendicular to the axis of cylindrical specimen. That's to say that the method is modified to convenient form to use measured waveforms in the x1–x2 plane. The measured wave data are fed into the inversion method and cross-sectional images are obtained. We get the numerical results from all directions by finite element method. It is verified that the Kirchhoff inversion works well for shape reconstruction of defects.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131406655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FEM investigation of traveling waves around nodal points of an ultrasonically vibrating plate 超声振动板节点周围行波的有限元研究
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167184
Yu-jie Zhou, Jun-hui Hu, Xiao-bo Zhu, Hua-qing Li
{"title":"FEM investigation of traveling waves around nodal points of an ultrasonically vibrating plate","authors":"Yu-jie Zhou, Jun-hui Hu, Xiao-bo Zhu, Hua-qing Li","doi":"10.1109/SPAWDA.2011.6167184","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167184","url":null,"abstract":"A vibrating metal strip, driven by piezoelectric ceramics, can rotate a cluster of small particles around a fixed node. Under appropriate driving conditions, the rotation becomes stable and the rotational radius of the cluster of small particles can reach the edge of the structure. This paper is focused on the analyses on the mechanisms of this phenomenon by Finite Element Method. First, the Finite Element Analysis code ANSYS was used to simplify the experimental structure and a preliminary analysis was performed. Then, based on the preliminary analysis, the structure of the metal strip was modified and reanalyzed. The finite element analytical results showed that the driving mechanism of the rotation of a cluster of particles is the traveling waves around nodes which were caused by non-uniform vibrations at the root of wedged plate structure, and the number of valid nodes is closely related to the width of the wedged plate.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128138396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Breathing cylindrical piezoelectric energy harvesters 呼吸圆柱形压电能量收集器
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167299
Zheng Rao, Hua Li, H. Tzou
{"title":"Breathing cylindrical piezoelectric energy harvesters","authors":"Zheng Rao, Hua Li, H. Tzou","doi":"10.1109/SPAWDA.2011.6167299","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167299","url":null,"abstract":"A breathing piezoelectric energy harvester (BPEH) is proposed and evaluated in this paper. A thin cylindrical shell is chosen as the substructure of energy harvester. Based on the Kirchhoff-Love thin shell theory and the direct piezoelectric effect, electro-mechanical coupling mechanism is formulated. An equivalent energy harvester circuit is obtained. It clearly reveals the link between the piezoelectric sensing theory in open circuit and the energy harvesting theory in close circuit. Then, distributed modal power is obtained by using the modal expansion method. To evaluate the effect of model design parameters to energy harvesting, a harmonic excitation, which is able to induce breathing modes, is imposed to the shell model. The optimal equivalent resistance is obtained and it is closely related to the inner impedance of piezoelectric patch. Power generations with respect to the size and location of piezoelectric harvester patch are evaluated, and the optimal location is obtained. All these parametric analysis can be utilized to improve efficient design of piezoelectric energy harvesting.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128140706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The xylem cavitation diagnosis technology based on ultrasonic acoustic emission 基于超声声发射的木质部空化诊断技术
2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2011-12-01 DOI: 10.1109/SPAWDA.2011.6167318
Jian-xin Wang, M. Sui, Shifeng Yang, X. Gao
{"title":"The xylem cavitation diagnosis technology based on ultrasonic acoustic emission","authors":"Jian-xin Wang, M. Sui, Shifeng Yang, X. Gao","doi":"10.1109/SPAWDA.2011.6167318","DOIUrl":"https://doi.org/10.1109/SPAWDA.2011.6167318","url":null,"abstract":"Studies have shown that ultrasonic acoustic emission (UAE) is associated with the phenomenon of cavitation diagnosis in plant conduit. The UAE signals can be acquired between 100 KHz and 1 MHz, which is the indicator of xylem cavitation. The UAE diagnosis system is established by PCI-2, PCI-8333 data acquisition card (DAQ), transducers and virtual instrument platform to realize the functions of data acquisition and transmission, data storage and information query, data output and report generation. From the experiment data, the 30 days cumulative UAEs curve is like inverted “V”, and the transpiration rate reaches the peak is earlier than cumulative UAEs. The both trends are very similar, the correlation coefficient is 0.89. Through the 24 time phase transpiration rate and cumulative UAEs proportion analysis, the conclusions can be got, the cumulative UAEs proportion is less than the transpiration rate during 00:00 – 11:59 phase, while reverse during 12:00 – 23:59 phase, and the 12:00 is an inflection point. In any case, the difference between both is not more than 10%, and the both have a better coordination and consistency. The UAE signal characteristics indicate that it is possible to use UAE as the plant body water status diagnosis index to estimate the water stress degree and guide the irrigation.","PeriodicalId":285701,"journal":{"name":"2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134389039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信