Pub Date : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019317
Kun Wang, Tao Leng, Jie Mao, Guoxuan Lian
In order to meet the needs of high-speed cache and transfer of parallel multi-channel ultrasonic system, this paper proposes a segmented cache method suitable for ultrasonic data organization and transfer, and completes the design of PCIe parallel multi-channel ultrasonic data interface based on RIFFA framework. The experiment verifies the reliability of the segmented cache method, realizes the cache and transfer of parallel 8-channel ultrasonic data, and the PCIe Gen2 x1 bus based on RIFFA 2.2.2 framework has a transfer rate of 395 MB/s. The research content of this paper is highly scalable and portable, and can be applied to a variety of multi-channel ultrasonic testing systems.
{"title":"Research on Parallel Multi-Channel Ultrasonic Data Cache and Transfer Method Based on RIFFA Framework PCIe Bus","authors":"Kun Wang, Tao Leng, Jie Mao, Guoxuan Lian","doi":"10.1109/SPAWDA48812.2019.9019317","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019317","url":null,"abstract":"In order to meet the needs of high-speed cache and transfer of parallel multi-channel ultrasonic system, this paper proposes a segmented cache method suitable for ultrasonic data organization and transfer, and completes the design of PCIe parallel multi-channel ultrasonic data interface based on RIFFA framework. The experiment verifies the reliability of the segmented cache method, realizes the cache and transfer of parallel 8-channel ultrasonic data, and the PCIe Gen2 x1 bus based on RIFFA 2.2.2 framework has a transfer rate of 395 MB/s. The research content of this paper is highly scalable and portable, and can be applied to a variety of multi-channel ultrasonic testing systems.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125939861","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019229
Xue Qi, Weijia Shi, Bo Zhao, Jiubin Tan
Piezoceramic actuators have been already applied in precision positioning in terms of simple and compact structure, free from noise, and high theoretical positioning resolution. However, the hysteresis characteristic limits the further improvement of positioning accuracy. Nowadays neural networks (NNs) have revolutionized progress in the identification and global linearization tasks, which makes it potential to employ deep learning in identifying hysteresis model of piezoceramic actuators in the linear frame. This paper aims at achieving the identification of the hysteresis model by means of NNs. Based on the Preisach model, datasets are obtained in Matlab. Identification of nonlinear coordinates is accomplished by the auto-encoder afterwards. As a result, weights of the various network branches are computed. Comparing the hysteresis model displacement output with the NNs reconstruction, it is found that the curves are basically consistent. The experimental results confirm the correctness of this method, which is of great significance for analysis and control of nonlinear systems.
{"title":"Deep Learning for Identifying Hysteresis Models of Piezoceramic Actuators in the Linear Frame","authors":"Xue Qi, Weijia Shi, Bo Zhao, Jiubin Tan","doi":"10.1109/SPAWDA48812.2019.9019229","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019229","url":null,"abstract":"Piezoceramic actuators have been already applied in precision positioning in terms of simple and compact structure, free from noise, and high theoretical positioning resolution. However, the hysteresis characteristic limits the further improvement of positioning accuracy. Nowadays neural networks (NNs) have revolutionized progress in the identification and global linearization tasks, which makes it potential to employ deep learning in identifying hysteresis model of piezoceramic actuators in the linear frame. This paper aims at achieving the identification of the hysteresis model by means of NNs. Based on the Preisach model, datasets are obtained in Matlab. Identification of nonlinear coordinates is accomplished by the auto-encoder afterwards. As a result, weights of the various network branches are computed. Comparing the hysteresis model displacement output with the NNs reconstruction, it is found that the curves are basically consistent. The experimental results confirm the correctness of this method, which is of great significance for analysis and control of nonlinear systems.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126665008","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019258
Jun Jin, Da-yong Huang, Xiao-wei Zhang, Hongping Hu
A double mesa-type quartz resonator is firstly proposed. Quartz resonator plays an important role in the modern electronic communication. AT-cut quartz resonators operating in thickness-shear (TS) mode are widely used in making piezoelectric resonator for its good frequency and temperature characteristics. The vibration can be better confined in the mesa-type quartz resonator. Mesa-type and inverted mesa-type quartz resonators are studied. The performance of the quartz resonator are sensitive to the geometry shape of the quartz plate and the electrode. The height of the mesa are the key to the optimization. Both energy trapping effect and frequency drift are considered to evaluate the performance of the quartz resonator. After comparation and optimization, the model of the double mesa-type quartz resonator with an optimal the height of the mesa is finally obtained. It has better performance beyond mesa-type and inverted mesa-type quartz resonators.
{"title":"Geometry Optimization on Mesa-Type Quartz Resonator","authors":"Jun Jin, Da-yong Huang, Xiao-wei Zhang, Hongping Hu","doi":"10.1109/SPAWDA48812.2019.9019258","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019258","url":null,"abstract":"A double mesa-type quartz resonator is firstly proposed. Quartz resonator plays an important role in the modern electronic communication. AT-cut quartz resonators operating in thickness-shear (TS) mode are widely used in making piezoelectric resonator for its good frequency and temperature characteristics. The vibration can be better confined in the mesa-type quartz resonator. Mesa-type and inverted mesa-type quartz resonators are studied. The performance of the quartz resonator are sensitive to the geometry shape of the quartz plate and the electrode. The height of the mesa are the key to the optimization. Both energy trapping effect and frequency drift are considered to evaluate the performance of the quartz resonator. After comparation and optimization, the model of the double mesa-type quartz resonator with an optimal the height of the mesa is finally obtained. It has better performance beyond mesa-type and inverted mesa-type quartz resonators.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124517859","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019245
F. Hang, Yangyang Zhang, A. Zhang, Tao Zhang, Jianke Du, Ji Wang
In modern products from advanced manufacturing process like semiconductor and electronic device industries, thin films are frequently utilized for essential functions such as conductive layers and functional elements for various applications. With sophisticated processing techniques, thin films can be coated on surfaces of various substrates with relatively thin thickness and desired planner patterns to satisfy application needs. It is natural to be concerned with materials and physical properties of films, but there is no easy answer due to the complicated processing technology. In this study, we start with the vibration analysis of a cuboid sample coated with thin films on bothsides with the Rayleigh-Ritz method. With one displacement functions in the entire structure, strain and kinetic energies are calculated with the consideration of different material properties and sizes, providing the basis for the determination of unknown properties of materials through frequency solutions. By combining this analysis with the RUSpec technique, we can obtain the physical properties of the thin film layers based on the frequency variations. With the advantages of easeof use and simple sample preparation, this will be a simple and accurate method for the evaluation of physical properties of thin films.
{"title":"An Analysis of Vibrations of Elastic Cuboids Covered with thin Films","authors":"F. Hang, Yangyang Zhang, A. Zhang, Tao Zhang, Jianke Du, Ji Wang","doi":"10.1109/SPAWDA48812.2019.9019245","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019245","url":null,"abstract":"In modern products from advanced manufacturing process like semiconductor and electronic device industries, thin films are frequently utilized for essential functions such as conductive layers and functional elements for various applications. With sophisticated processing techniques, thin films can be coated on surfaces of various substrates with relatively thin thickness and desired planner patterns to satisfy application needs. It is natural to be concerned with materials and physical properties of films, but there is no easy answer due to the complicated processing technology. In this study, we start with the vibration analysis of a cuboid sample coated with thin films on bothsides with the Rayleigh-Ritz method. With one displacement functions in the entire structure, strain and kinetic energies are calculated with the consideration of different material properties and sizes, providing the basis for the determination of unknown properties of materials through frequency solutions. By combining this analysis with the RUSpec technique, we can obtain the physical properties of the thin film layers based on the frequency variations. With the advantages of easeof use and simple sample preparation, this will be a simple and accurate method for the evaluation of physical properties of thin films.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121976154","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019291
Cheng Shi, Yan Shi, C. Gao
Stretchable solar arrays meet the demands of light weight and flexibility for future solar array design. Research in stretchable electronics has uncovered ways to build stretchable systems with inorganic materials. Island-bridge layout and structured substrate are two effective methods to build stretchable systems. This work proposes a zigzag structured substrate for stretchable solar arrays to provide levels of stretchability.A zigzag structure serves as the device island of the solar array to absorb and isolate large deformation of the substrate. An analytic model is established to analyze the stretchability of a planar zigzag structure. A stretchable solar array with a zigzag structured substrate is analyzed by FEM.The solar array with a zigzag structured substrate enables high area coverage and stretchability. This work presents a new approach for design of stretchable solar array and introduce a simply effective model as guidelines.
{"title":"Mechanics Design of a Zigzag Structured Substrate for Stretchable Solar Arrays","authors":"Cheng Shi, Yan Shi, C. Gao","doi":"10.1109/SPAWDA48812.2019.9019291","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019291","url":null,"abstract":"Stretchable solar arrays meet the demands of light weight and flexibility for future solar array design. Research in stretchable electronics has uncovered ways to build stretchable systems with inorganic materials. Island-bridge layout and structured substrate are two effective methods to build stretchable systems. This work proposes a zigzag structured substrate for stretchable solar arrays to provide levels of stretchability.A zigzag structure serves as the device island of the solar array to absorb and isolate large deformation of the substrate. An analytic model is established to analyze the stretchability of a planar zigzag structure. A stretchable solar array with a zigzag structured substrate is analyzed by FEM.The solar array with a zigzag structured substrate enables high area coverage and stretchability. This work presents a new approach for design of stretchable solar array and introduce a simply effective model as guidelines.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125308206","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019232
Jia-rong Wang, Xin-ran Xu, Zhen-yu Zheng
In this paper, a PVDF planar hydrophone based on low-density composite backing is proposed. Based on the theoretical modeling of PVDF planar hydrophone with multi-layer composite as backing, the effects of laying order, laying direction and laying thickness of multi-layer composite on the response of hydrophone are analyzed. The modeling method of multi-layer composite materials is given. In addition, the receiving performance of PVDF hydrophone with metal backing and composite backing is compared and analyzed.
{"title":"Modeling and Design of PVDF Planar Hydrophone based on Composite Backing","authors":"Jia-rong Wang, Xin-ran Xu, Zhen-yu Zheng","doi":"10.1109/SPAWDA48812.2019.9019232","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019232","url":null,"abstract":"In this paper, a PVDF planar hydrophone based on low-density composite backing is proposed. Based on the theoretical modeling of PVDF planar hydrophone with multi-layer composite as backing, the effects of laying order, laying direction and laying thickness of multi-layer composite on the response of hydrophone are analyzed. The modeling method of multi-layer composite materials is given. In addition, the receiving performance of PVDF hydrophone with metal backing and composite backing is compared and analyzed.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128321570","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019324
Jun-feng Wang, Kang-kang Zhang, Dejin Huang
A new composite piezoelectric beam is proposed for gyroscope application in this paper. The beam is made of lithium niobate plate with a ferroelectric inversion layer. The flexural vibration of the beam is investigated by one-dimensional beam theory, considering the effects of Coriolis force and centrifugal force. The governing equations are obtained for the analysis of the flexural vibration under the driving voltage. The effects of angular velocity, electrical impendence of the output circuit, and frequencies of a rotating piezoelectric beam are studied through a numerical example.
{"title":"Study on a Piezoelectric Gyroscope Based on Flexrual Vibration Mode","authors":"Jun-feng Wang, Kang-kang Zhang, Dejin Huang","doi":"10.1109/SPAWDA48812.2019.9019324","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019324","url":null,"abstract":"A new composite piezoelectric beam is proposed for gyroscope application in this paper. The beam is made of lithium niobate plate with a ferroelectric inversion layer. The flexural vibration of the beam is investigated by one-dimensional beam theory, considering the effects of Coriolis force and centrifugal force. The governing equations are obtained for the analysis of the flexural vibration under the driving voltage. The effects of angular velocity, electrical impendence of the output circuit, and frequencies of a rotating piezoelectric beam are studied through a numerical example.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130361249","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019289
Yuan Sun, Wen Wang, Yana Jia, Shuyao Fan, Yong Liang
In this paper, a novel surface acoustic wave current sensor combining SAW technology and magnetostrictive material is proposed. The typical structure of the sensor is a surface acoustic wave device surface sputtered hysteresis film based on planar lithography. The magnetic sensitive materials with high magnetostriction coefficient are a key factor. In this paper, the TbDyFe giant magnetostrictive film with better performance is used to induce the magnetostrictive strain by applying a magnetic field induced by current, which causes the SAW propagation speed to change. The applied current is evaluated using the differential oscillation frequency offset of the differential delay line oscillating loop. Current experiments show that the current sensor proposed in this paper has high sensitivity and good linearity.
{"title":"Sensitivity Improvement of TbDyFe Thin-Film Coated Saw-Based Current Sensor","authors":"Yuan Sun, Wen Wang, Yana Jia, Shuyao Fan, Yong Liang","doi":"10.1109/SPAWDA48812.2019.9019289","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019289","url":null,"abstract":"In this paper, a novel surface acoustic wave current sensor combining SAW technology and magnetostrictive material is proposed. The typical structure of the sensor is a surface acoustic wave device surface sputtered hysteresis film based on planar lithography. The magnetic sensitive materials with high magnetostriction coefficient are a key factor. In this paper, the TbDyFe giant magnetostrictive film with better performance is used to induce the magnetostrictive strain by applying a magnetic field induced by current, which causes the SAW propagation speed to change. The applied current is evaluated using the differential oscillation frequency offset of the differential delay line oscillating loop. Current experiments show that the current sensor proposed in this paper has high sensitivity and good linearity.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116527110","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019334
Shuyao Fan, Wen Wang, Xueling Li
Nowadays, strain online monitoring technology of high-temperature components plays an important role in ensuring accurate operation and safe production in the fields of aerospace, nuclear power and power plants. A SAW high-temperature strain sensor employing composite structure of based Al2O3/ IDTs/ AlN/ Metal/ Al2O3 is proposed to obtain strain information at extreme high-temperature environment. Obviously, high performance as Q-value and low insertion loss of the sensing chip is the key for achieving successful wireless strain sensing system. In this work, the theoretical simulation by using the finite element method (FEM) analysis was performed to realize the SAW propagation in multi-layered composite structures, and corresponding coupling of modes (COM) parameter was extracted. On this basis, the optimal design on the SAW high-temperature strain sensing device was realized.
{"title":"Optimal Design on Saw Strain Sensor at High-Temperature","authors":"Shuyao Fan, Wen Wang, Xueling Li","doi":"10.1109/SPAWDA48812.2019.9019334","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019334","url":null,"abstract":"Nowadays, strain online monitoring technology of high-temperature components plays an important role in ensuring accurate operation and safe production in the fields of aerospace, nuclear power and power plants. A SAW high-temperature strain sensor employing composite structure of based Al2O3/ IDTs/ AlN/ Metal/ Al2O3 is proposed to obtain strain information at extreme high-temperature environment. Obviously, high performance as Q-value and low insertion loss of the sensing chip is the key for achieving successful wireless strain sensing system. In this work, the theoretical simulation by using the finite element method (FEM) analysis was performed to realize the SAW propagation in multi-layered composite structures, and corresponding coupling of modes (COM) parameter was extracted. On this basis, the optimal design on the SAW high-temperature strain sensing device was realized.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114959042","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 : 2019-11-01DOI: 10.1109/SPAWDA48812.2019.9019328
Ti-fan Yan, Jianrun Zhang
Aiming at the optimization of vehicle noise environment, a statistical energy method model for real vehicle is established. Unlike the existing studies, using vibration and noise test system, engine vibration acceleration and transmitted sound data are obtained. According to the ergonomics, the acoustic cavity in the car is reasonably divided, the coupling loss factor between subsystems is determined, and the test data is inputted to carry out the mid-high frequency simulation analysis of the acoustic cavity in the SUV. The simulated result of sound pressure level in the head of co-pilot cab is 65.59 dB(A) after being A-Weighted. Simulation results are compared with the actual sound pressure level measured by actual measurement, the simulation accuracy is within 5dB(A). By optimizing the vehicle insulation cotton, the sound pressure has reduced to 64.77 dB(A), sound insulation performance has been greatly improved.
{"title":"Testing and Simulation of Mid-High Frequency Acoustics in Vehicle Applying Statiscal Energy Analysis Method","authors":"Ti-fan Yan, Jianrun Zhang","doi":"10.1109/SPAWDA48812.2019.9019328","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019328","url":null,"abstract":"Aiming at the optimization of vehicle noise environment, a statistical energy method model for real vehicle is established. Unlike the existing studies, using vibration and noise test system, engine vibration acceleration and transmitted sound data are obtained. According to the ergonomics, the acoustic cavity in the car is reasonably divided, the coupling loss factor between subsystems is determined, and the test data is inputted to carry out the mid-high frequency simulation analysis of the acoustic cavity in the SUV. The simulated result of sound pressure level in the head of co-pilot cab is 65.59 dB(A) after being A-Weighted. Simulation results are compared with the actual sound pressure level measured by actual measurement, the simulation accuracy is within 5dB(A). By optimizing the vehicle insulation cotton, the sound pressure has reduced to 64.77 dB(A), sound insulation performance has been greatly improved.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134575649","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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