Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364433
G. Zhou, Mei-ling Guo, Xue Bai, Jia Li
The method of slowness surface is used to study the ferroelastic phase transition of LiCsSO4. The slowness surfaces of the crystal have been plotted between 202K and 293K. The direction of the maximum slowness is on the XZ plane and the angle of it and X axis is -49.5 degree when temperature is above 206K. At 206K, the direction of the maximum slowness is along X axis. As the temperature decreases from 206K to 202K, the direction of the maximum slowness doesn't change anymore but the slowness surfaces change dramatically. According to the soft mode theory and the elastic constitutive relations, we obtained that LiCsSO4 crystal is in the same symmetry between 202K and 206K.
{"title":"Slowness surfaces study of the ferroelastic phase transition of LiCsSO4 crystal","authors":"G. Zhou, Mei-ling Guo, Xue Bai, Jia Li","doi":"10.1109/SPAWDA.2015.7364433","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364433","url":null,"abstract":"The method of slowness surface is used to study the ferroelastic phase transition of LiCsSO4. The slowness surfaces of the crystal have been plotted between 202K and 293K. The direction of the maximum slowness is on the XZ plane and the angle of it and X axis is -49.5 degree when temperature is above 206K. At 206K, the direction of the maximum slowness is along X axis. As the temperature decreases from 206K to 202K, the direction of the maximum slowness doesn't change anymore but the slowness surfaces change dramatically. According to the soft mode theory and the elastic constitutive relations, we obtained that LiCsSO4 crystal is in the same symmetry between 202K and 206K.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127758633","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364514
Yana Jia, Wen Wang
In order to achieve a kind of high-performance current sensor with high sensitivity and low temperature drift, this paper put forward a kind of new current sensor combined the surface acoustic wave (SAW) technology with magnetostrictive effect, analyzed its response mechanism and improve its temperature characteristic. This SAW current sensor used dual-delay-line oscillators based on 128°YX-LiNbO3 piezoelectric substrate as sensing element. LiNbO3 piezoelectric substrate surface was covered with SiO2 thin layer whose temperature coefficient polarity is opposite to improve the temperature stability, and one of the SAW delay lines was sputtered with magnetostrictive FeCo film in response to current. The magnetic field of the desired current induces the FeCo film's magnetostrictive strain and ΔE effect, changes the SAW propagation characteristics. Using the Helmholtz coil, the developed SAW current sensor was characterized, high sensitivity, and good linearity were observed in the current experiment.
{"title":"The development of SAW current sensor based on the magnetostrictive effect","authors":"Yana Jia, Wen Wang","doi":"10.1109/SPAWDA.2015.7364514","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364514","url":null,"abstract":"In order to achieve a kind of high-performance current sensor with high sensitivity and low temperature drift, this paper put forward a kind of new current sensor combined the surface acoustic wave (SAW) technology with magnetostrictive effect, analyzed its response mechanism and improve its temperature characteristic. This SAW current sensor used dual-delay-line oscillators based on 128°YX-LiNbO3 piezoelectric substrate as sensing element. LiNbO3 piezoelectric substrate surface was covered with SiO2 thin layer whose temperature coefficient polarity is opposite to improve the temperature stability, and one of the SAW delay lines was sputtered with magnetostrictive FeCo film in response to current. The magnetic field of the desired current induces the FeCo film's magnetostrictive strain and ΔE effect, changes the SAW propagation characteristics. Using the Helmholtz coil, the developed SAW current sensor was characterized, high sensitivity, and good linearity were observed in the current experiment.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121507761","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364437
Yingxiang Liu, Chun-hong Li, Weishan Chen, Xiu-hua Ni, Jun-kao Liu
A novel longitudinal-bending (L-B) hybrid ultrasonic motor using vibration coupling is proposed. Different with the previous L-B ultrasonic motors, only longitudinal PZT plates are used; and the longitudinal-bending hybrid vibrations of the motor are excited synchronously. Fixed boundary condition is applied on one side surface of the flange, which locates at the wave node of a longitudinal transducer. The working principle of the motor is analyzed. By using finite element method, comparison between the proposed ultrasonic motor with fixed boundary condition and a transducer with free boundary condition are developed by modal analysis, harmonic analysis and transient analysis. It is found that the longitudinal-bending hybrid vibrations can be produced by the longitudinal piezoelectric elements under a fixed boundary condition of the flange. It should be noted that the bending vibration is not generated by the bending piezoelectric elements, but excited by a vibration coupling effect under an unsymmetrical boundary condition. The change of the boundary condition also shows minute effects on the resonance frequency and the electromechanical coupling factor. Oblique elliptical movements are formed on the two end tips of the transducer. These motions can push the runners linearly by frictional forces if preloads are applied.
{"title":"Analysis of a novel longitudinal-bending hybrid ultrasonic motor using vibration coupling","authors":"Yingxiang Liu, Chun-hong Li, Weishan Chen, Xiu-hua Ni, Jun-kao Liu","doi":"10.1109/SPAWDA.2015.7364437","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364437","url":null,"abstract":"A novel longitudinal-bending (L-B) hybrid ultrasonic motor using vibration coupling is proposed. Different with the previous L-B ultrasonic motors, only longitudinal PZT plates are used; and the longitudinal-bending hybrid vibrations of the motor are excited synchronously. Fixed boundary condition is applied on one side surface of the flange, which locates at the wave node of a longitudinal transducer. The working principle of the motor is analyzed. By using finite element method, comparison between the proposed ultrasonic motor with fixed boundary condition and a transducer with free boundary condition are developed by modal analysis, harmonic analysis and transient analysis. It is found that the longitudinal-bending hybrid vibrations can be produced by the longitudinal piezoelectric elements under a fixed boundary condition of the flange. It should be noted that the bending vibration is not generated by the bending piezoelectric elements, but excited by a vibration coupling effect under an unsymmetrical boundary condition. The change of the boundary condition also shows minute effects on the resonance frequency and the electromechanical coupling factor. Oblique elliptical movements are formed on the two end tips of the transducer. These motions can push the runners linearly by frictional forces if preloads are applied.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125232000","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364489
M. Cui, Shu Xue, Rui-biao Guo, Min Su, Yong-chuan Li, M. Qian
A cylindrical transducer based on PZT-5H/epoxy 2-2 piezoelectric composite with 40 elements is designed and fabricated in this paper. The prepared PZT-5H/epoxy 2-2 piezoelectric composite shows a single thickness mode, low acoustical impedance (25.8MRayls) and high electromechanical coupling coefficient (0.72). A pulse-echo method is utilized to test the performance of the cylindrical transducer. The center frequency for a representative element is calculated to be 5.02MHz and -6dB bandwidth is 62.9%. The elevation focal length is approximately 4.9cm. It indicates the bend-and-combine method proposed is feasible.
{"title":"Design and fabrication of cylindrical transducer based on 2–2 piezoelectric composite","authors":"M. Cui, Shu Xue, Rui-biao Guo, Min Su, Yong-chuan Li, M. Qian","doi":"10.1109/SPAWDA.2015.7364489","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364489","url":null,"abstract":"A cylindrical transducer based on PZT-5H/epoxy 2-2 piezoelectric composite with 40 elements is designed and fabricated in this paper. The prepared PZT-5H/epoxy 2-2 piezoelectric composite shows a single thickness mode, low acoustical impedance (25.8MRayls) and high electromechanical coupling coefficient (0.72). A pulse-echo method is utilized to test the performance of the cylindrical transducer. The center frequency for a representative element is calculated to be 5.02MHz and -6dB bandwidth is 62.9%. The elevation focal length is approximately 4.9cm. It indicates the bend-and-combine method proposed is feasible.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131572965","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}
A bending vibrations hybrid type ultrasonic motor with a bonded-type structure is proposed and designed in this work. Four pieces of PZT plates are bonded on a metal beam to form the proposed motor. In this design, elliptical movements of the driving feet, the significant motion to realize the actuating of a rotor, is produced by the superimposing of two first bending vibrations orthogonal in space. The structural parameters' sensitivities of the bending resonance frequency and the electromechanical coupling factor are calculated and discussed by modal analysis and harmonic analysis respectively. The most sensitive parameters are obtained. Then, the vibration characteristic of the proposed motor is investigated by transient analysis; another ultrasonic motor with the same length but no horns is also calculated to give a comparison. Different with previous motor, the proposed one drive the runner by two transversal displacements of the driving tip; this new actuating mode has merits of higher resonance frequency, larger vibration amplitude and velocity, better movement trajectory uniformity and shorter response time. The study results can guide the fabrication of linear or rotary ultrasonic motor with small size.
{"title":"Design of a bending vibrations hybrid type ultrasonic motor with a bonded-type structure","authors":"Yingxiang Liu, Dongmei Xu, Ji-peng Yan, Xiu-hua Ni, Weishan Chen","doi":"10.1109/SPAWDA.2015.7364438","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364438","url":null,"abstract":"A bending vibrations hybrid type ultrasonic motor with a bonded-type structure is proposed and designed in this work. Four pieces of PZT plates are bonded on a metal beam to form the proposed motor. In this design, elliptical movements of the driving feet, the significant motion to realize the actuating of a rotor, is produced by the superimposing of two first bending vibrations orthogonal in space. The structural parameters' sensitivities of the bending resonance frequency and the electromechanical coupling factor are calculated and discussed by modal analysis and harmonic analysis respectively. The most sensitive parameters are obtained. Then, the vibration characteristic of the proposed motor is investigated by transient analysis; another ultrasonic motor with the same length but no horns is also calculated to give a comparison. Different with previous motor, the proposed one drive the runner by two transversal displacements of the driving tip; this new actuating mode has merits of higher resonance frequency, larger vibration amplitude and velocity, better movement trajectory uniformity and shorter response time. The study results can guide the fabrication of linear or rotary ultrasonic motor with small size.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122664875","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364540
Hong-bo Zhang, Jiujiu Chen, Xu Han
In this paper, we present the theoretical calculations of the dispersion curves of Lamb mode waves in one-dimensional magnetoelastic phononic crystal (PC) plates by using the finite element method (FEM) and the plane wave expansion (PWE) method. The effects of filling fraction and plate thickness to lattice pitch ratio on the first band gap (FBG) are analyzed under different magnetic boundary conditions. The numerical results show that the FBG characteristics are significantly influenced by different magnetic boundary conditions. Further calculations demonstrate that the filling fraction and the plate thickness to lattice pitch ratio are the most important parameters that affect the width and location of the FBG.
{"title":"Lamb wave band gaps in one-dimensional magnetoelastic phononic crystal plates","authors":"Hong-bo Zhang, Jiujiu Chen, Xu Han","doi":"10.1109/SPAWDA.2015.7364540","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364540","url":null,"abstract":"In this paper, we present the theoretical calculations of the dispersion curves of Lamb mode waves in one-dimensional magnetoelastic phononic crystal (PC) plates by using the finite element method (FEM) and the plane wave expansion (PWE) method. The effects of filling fraction and plate thickness to lattice pitch ratio on the first band gap (FBG) are analyzed under different magnetic boundary conditions. The numerical results show that the FBG characteristics are significantly influenced by different magnetic boundary conditions. Further calculations demonstrate that the filling fraction and the plate thickness to lattice pitch ratio are the most important parameters that affect the width and location of the FBG.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124511455","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}
A cross-shaped piezoelectric motor with length of 43mm and diameter of 11 mm was proposed in this paper. Two third bending modes were used to generate ellipse trajectory at the driving foot located at the vibrator's center. Sixteen pieces of piezoelectric ceramic plates with sizes of 5mm×3mm×1mm were used to excite two third bending modes. Sine and cosine voltages with effective value of 100V at the frequency of 54.696 kHz were applied to the piezoelectric ceramic plates in right and left sides of the vibrator. Symmetrical structure of the motor solved the problem of mode frequency degeneracy. Two excitation methods were put forward to excite two third bending vibrations. And effectiveness of the two excitation methods was compared by the transient analysis with finite element method. Transient analysis results showed that motion trajectories of nodes on the driving feet were three-dimensional and that ellipse motion in the XOY plane was fit to drive the motor, and the new excitation method improves the vibration amplitude in the OX and OY by 2 times and 4 times, respectively compared with the vibration amplitude excited by the traditional excitation method.
{"title":"Design of a cross-shaped piezoelectric motor with single driving foot","authors":"Jun-kao Liu, Dongmei Xu, Yingxiang Liu, Xiu-hua Ni, Weishan Chen","doi":"10.1109/SPAWDA.2015.7364436","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364436","url":null,"abstract":"A cross-shaped piezoelectric motor with length of 43mm and diameter of 11 mm was proposed in this paper. Two third bending modes were used to generate ellipse trajectory at the driving foot located at the vibrator's center. Sixteen pieces of piezoelectric ceramic plates with sizes of 5mm×3mm×1mm were used to excite two third bending modes. Sine and cosine voltages with effective value of 100V at the frequency of 54.696 kHz were applied to the piezoelectric ceramic plates in right and left sides of the vibrator. Symmetrical structure of the motor solved the problem of mode frequency degeneracy. Two excitation methods were put forward to excite two third bending vibrations. And effectiveness of the two excitation methods was compared by the transient analysis with finite element method. Transient analysis results showed that motion trajectories of nodes on the driving feet were three-dimensional and that ellipse motion in the XOY plane was fit to drive the motor, and the new excitation method improves the vibration amplitude in the OX and OY by 2 times and 4 times, respectively compared with the vibration amplitude excited by the traditional excitation method.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121953432","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364476
Yong-bin Zhang, C. Pan, Xue-kui Meng, Liandong Yu
Energy source and environment protection are universal concerned topics in our society. There are a series of problems caused by using traditional batteries for wireless and portable electronic products. In this paper, a novel resonant cavity with piezoelectric tuning fork reeds is proposed to scavenge wind energy as a power supplier for remote wireless sensor network nodes. Performance of the proposed piezoelectric wind energy harvesting device is studied numerically and experimentally. Structural design and working principle of the device are introduced. Working mode and frequency of the structure are analyzed with FEA simulation. Output abilities of the prototype device are tested under different working conditions. The device shows a violent resonant vibration in anti-phase mode when the wind speed is over 9 m/s. With a matching load of 83 kΩ, an output power of 6.3 mW was achieved under the wind speed of 12 m/s.
{"title":"Piezoelectric wind energy harvesting device with resonant cavity and tuning fork reeds","authors":"Yong-bin Zhang, C. Pan, Xue-kui Meng, Liandong Yu","doi":"10.1109/SPAWDA.2015.7364476","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364476","url":null,"abstract":"Energy source and environment protection are universal concerned topics in our society. There are a series of problems caused by using traditional batteries for wireless and portable electronic products. In this paper, a novel resonant cavity with piezoelectric tuning fork reeds is proposed to scavenge wind energy as a power supplier for remote wireless sensor network nodes. Performance of the proposed piezoelectric wind energy harvesting device is studied numerically and experimentally. Structural design and working principle of the device are introduced. Working mode and frequency of the structure are analyzed with FEA simulation. Output abilities of the prototype device are tested under different working conditions. The device shows a violent resonant vibration in anti-phase mode when the wind speed is over 9 m/s. With a matching load of 83 kΩ, an output power of 6.3 mW was achieved under the wind speed of 12 m/s.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127392031","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364470
Jinhui Zhang, Sheng-lin Ma, L. Qin
In this paper, the parameters effect on resonant frequency of MEMS piezoelectric cantilever beam is studied by FEA simulation, which is aimed to provide estimation of the frequency error using simple beam formula for piezoelectric cantilever beam based vibration energy harvester. In the simulation, piezoelectric vibration energy harvester is simplified to a thin silicon cantilever beam with a proof mass attached at the free end; the frequency error (Er) was achieved from the difference of simulation value and the value determined by beam formula, and its three main parameters width to length ratio of cantilever beam, covering area of proof mass, and mass ratio of proof mass to cantilever mass are systematically analyzed with a range of 0.1 to 1, 0.05 to 0.6, 0.5 to 150 respectively; multiple linear regression analysis was used to evaluate these parameters effects. The results show that Er increases with each of these three parameters; the covering area of proof mass has the greatest effect on Er; the range of parameters should be carefully considered to avoid big frequency error using beam equation; the simulation results can be used to guide the design of piezoelectric cantilever beam based vibration energy harvester.
{"title":"Analysis of frequency characteristics of MEMS piezoelectric cantilever beam based energy harvester","authors":"Jinhui Zhang, Sheng-lin Ma, L. Qin","doi":"10.1109/SPAWDA.2015.7364470","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364470","url":null,"abstract":"In this paper, the parameters effect on resonant frequency of MEMS piezoelectric cantilever beam is studied by FEA simulation, which is aimed to provide estimation of the frequency error using simple beam formula for piezoelectric cantilever beam based vibration energy harvester. In the simulation, piezoelectric vibration energy harvester is simplified to a thin silicon cantilever beam with a proof mass attached at the free end; the frequency error (Er) was achieved from the difference of simulation value and the value determined by beam formula, and its three main parameters width to length ratio of cantilever beam, covering area of proof mass, and mass ratio of proof mass to cantilever mass are systematically analyzed with a range of 0.1 to 1, 0.05 to 0.6, 0.5 to 150 respectively; multiple linear regression analysis was used to evaluate these parameters effects. The results show that Er increases with each of these three parameters; the covering area of proof mass has the greatest effect on Er; the range of parameters should be carefully considered to avoid big frequency error using beam equation; the simulation results can be used to guide the design of piezoelectric cantilever beam based vibration energy harvester.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115965789","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}
Pub Date : 2015-12-28DOI: 10.1109/SPAWDA.2015.7364530
Shuai Li, Guoxuan Lian, Zhao-bin Peng
A large amount of data is produced in the process of ultrasonic testing of rail, and it's necessary to compress the raw data with a loss-less compression algorithm. This paper analyses statistical characteristics of ultrasonic test data of rail, and makes researches on the commonly used loss-less compression algorithm, Huffman compression algorithm and LZW compression algorithm. In order to improve the performance of compression, this paper designs and implements a new loss-less compression algorithm based on the above analysis and then tests the new algorithm with a number of ultrasonic test data files of rail. The test results show that the new algorithm has a relatively high compression ratio and the compression performance is significantly better than Huffman compression algorithm and LZW compression algorithm.
{"title":"Research on the loss-less compression algorithm of the ultrasonic testing of rail","authors":"Shuai Li, Guoxuan Lian, Zhao-bin Peng","doi":"10.1109/SPAWDA.2015.7364530","DOIUrl":"https://doi.org/10.1109/SPAWDA.2015.7364530","url":null,"abstract":"A large amount of data is produced in the process of ultrasonic testing of rail, and it's necessary to compress the raw data with a loss-less compression algorithm. This paper analyses statistical characteristics of ultrasonic test data of rail, and makes researches on the commonly used loss-less compression algorithm, Huffman compression algorithm and LZW compression algorithm. In order to improve the performance of compression, this paper designs and implements a new loss-less compression algorithm based on the above analysis and then tests the new algorithm with a number of ultrasonic test data files of rail. The test results show that the new algorithm has a relatively high compression ratio and the compression performance is significantly better than Huffman compression algorithm and LZW compression algorithm.","PeriodicalId":205914,"journal":{"name":"2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115615429","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}
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