Pub Date : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00152
Jing Sun
According to disadvantages of low convergence rate, big steady-state and local convergence error of traditional equalization constant modulus algorithm(CMA), combined with the orthogonal wavelet transform and the chicken swarm optimization algorithm(CSO), an orthogonal wavelet transform blind equalization algorithm based on chicken swarm optimization algorithm (CSO-WT-CMA) is proposed. Based on the CMA, the proposed algorithm improved the convergence rate by using the orthogonal wavelet transform to normalize the transmission signal (WT-CMA). Meanwhile, in order to avoid premature convergence, local optimization and can’t achieve global optimization, inertia weight factor is introduced into the location update formula of hens and chicks, improving the global search and local search ability. Computer simulations in underwater acoustic channels indicate that the proposed algorithm outperforms the WT-CMA in mean square error and convergence rate.
{"title":"Orthogonal Wavelet Transform Blind Equalization Algorithm based on Chicken Swarm Optimization Algorithm","authors":"Jing Sun","doi":"10.1109/ICEDME50972.2020.00152","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00152","url":null,"abstract":"According to disadvantages of low convergence rate, big steady-state and local convergence error of traditional equalization constant modulus algorithm(CMA), combined with the orthogonal wavelet transform and the chicken swarm optimization algorithm(CSO), an orthogonal wavelet transform blind equalization algorithm based on chicken swarm optimization algorithm (CSO-WT-CMA) is proposed. Based on the CMA, the proposed algorithm improved the convergence rate by using the orthogonal wavelet transform to normalize the transmission signal (WT-CMA). Meanwhile, in order to avoid premature convergence, local optimization and can’t achieve global optimization, inertia weight factor is introduced into the location update formula of hens and chicks, improving the global search and local search ability. Computer simulations in underwater acoustic channels indicate that the proposed algorithm outperforms the WT-CMA in mean square error and convergence rate.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115616001","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00058
Penghui Niu, Yitian Zhu, Zhen Wang, Yu Tang
At helicopter fault diagnosis, the phase difference estimation of fault signal is often used. Due to the impact of the actual working environment, the fault signals collected for analysis are greatly affected by noise, and the signal-to-noise ratio is high, which is not conducive to the phase difference estimation. In this paper, considering the property that bi-spectrum can effectively suppress Gaussian noise, the phase difference of fault signal is obtained by signal reconstruction, bi-spectrum solution and initial phase estimation based on bi-spectrum theory. The simulation results show its effectiveness.
{"title":"Phase Difference Estimation of Helicopter Fault Signal Based on Bi-Spectrum","authors":"Penghui Niu, Yitian Zhu, Zhen Wang, Yu Tang","doi":"10.1109/ICEDME50972.2020.00058","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00058","url":null,"abstract":"At helicopter fault diagnosis, the phase difference estimation of fault signal is often used. Due to the impact of the actual working environment, the fault signals collected for analysis are greatly affected by noise, and the signal-to-noise ratio is high, which is not conducive to the phase difference estimation. In this paper, considering the property that bi-spectrum can effectively suppress Gaussian noise, the phase difference of fault signal is obtained by signal reconstruction, bi-spectrum solution and initial phase estimation based on bi-spectrum theory. The simulation results show its effectiveness.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128749310","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00125
Wx Zhang, Yg Chen
With the rapid development of science and technology, many new materials, such as various types of polymer, have been widely used in modern industry. These materials not only have the characteristics of elastic solid, but also have the characteristics of viscous fluid, namely viscoelastic materials. On the basis of the Laplace transform, the governing equations in the state space are established, and the symplectic solution method is constructed to solve the viscoelastic polymer problem..
{"title":"Fundamental Solutions for 2D Polymer Materials","authors":"Wx Zhang, Yg Chen","doi":"10.1109/ICEDME50972.2020.00125","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00125","url":null,"abstract":"With the rapid development of science and technology, many new materials, such as various types of polymer, have been widely used in modern industry. These materials not only have the characteristics of elastic solid, but also have the characteristics of viscous fluid, namely viscoelastic materials. On the basis of the Laplace transform, the governing equations in the state space are established, and the symplectic solution method is constructed to solve the viscoelastic polymer problem..","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130335591","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00046
Li Siyu, Huang Shaoluo, Wang Handong, Liu Min
With the help of mature Internet technology, cloud computing can be applied to mechanical equipment maintenance and operation to change the traditional mode, save costs and ensure safety. This paper builds mechanical equipment simulation training mode with the help of cloud computing "IAAs", analyzes the characteristics of "center cloud terminal" task demand, resource allocation, etc. A resource scheduling method based on reinforcement learning is proposed. By improving the scheduling algorithm and introducing supervised learning, self iterative updating is carried out, and finally the optimal allocation strategy of resources is found.
{"title":"IAAs based resource scheduling for mechanical equipment","authors":"Li Siyu, Huang Shaoluo, Wang Handong, Liu Min","doi":"10.1109/ICEDME50972.2020.00046","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00046","url":null,"abstract":"With the help of mature Internet technology, cloud computing can be applied to mechanical equipment maintenance and operation to change the traditional mode, save costs and ensure safety. This paper builds mechanical equipment simulation training mode with the help of cloud computing \"IAAs\", analyzes the characteristics of \"center cloud terminal\" task demand, resource allocation, etc. A resource scheduling method based on reinforcement learning is proposed. By improving the scheduling algorithm and introducing supervised learning, self iterative updating is carried out, and finally the optimal allocation strategy of resources is found.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127985357","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}
Vertical-cavity surface-emitting lasers (VCSELs) with 894.6nm as the ideal light source for cesium (Cs) atomic clock is analyzed. The VCSEL with central wavelength of 894.6nm is designed and fabricated for Cs atomic clock using the control mode of two-dimensional triangular-hole structure oxidation type VCSEL. The output power is 0.86mw, with the single mode suppression ratio (SMSR) of more than 20dB and the threshold current of 1mA. The observation of laser spectrum and far-field pattern shows that the single-mode VCSEL can be used in atomic clock successfully.
{"title":"894.6nm VCSEL for Cs-Based Atomic Clocks with triangular holey structure","authors":"W. Pang, Guanzhong Pan, Qiuhua Wang, Liangchen Hu, Zhuangzhuang Zhao, Yiyang Xie","doi":"10.1109/ICEDME50972.2020.00136","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00136","url":null,"abstract":"Vertical-cavity surface-emitting lasers (VCSELs) with 894.6nm as the ideal light source for cesium (Cs) atomic clock is analyzed. The VCSEL with central wavelength of 894.6nm is designed and fabricated for Cs atomic clock using the control mode of two-dimensional triangular-hole structure oxidation type VCSEL. The output power is 0.86mw, with the single mode suppression ratio (SMSR) of more than 20dB and the threshold current of 1mA. The observation of laser spectrum and far-field pattern shows that the single-mode VCSEL can be used in atomic clock successfully.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128928992","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00043
Liu Yan-shu, Wang Yu
There are many deep hole processing methods for TC4 titanium alloy, but it is a blank to drill with a mahine-clamped deep hole drill, so we have carried out some experi--mental studies. Using different spindle speed and feed in the test process of chip morphology and chip removal condition respectively and drill bit, the abrasion of guide block is analyzed using single factor method is suitable for the machine clamp type TC4 titanium alloy drilling deep hole drill in the best condition, get the best speed, the best feeding, for deep hole drill machine clamp type provides effective of TC4 titanium alloy drilling processing parameters.
{"title":"Experimental Study of TC4 Titanium Alloy Deep Hole Drilling Based on Machine-Clamped Deep Hole Drill","authors":"Liu Yan-shu, Wang Yu","doi":"10.1109/ICEDME50972.2020.00043","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00043","url":null,"abstract":"There are many deep hole processing methods for TC4 titanium alloy, but it is a blank to drill with a mahine-clamped deep hole drill, so we have carried out some experi--mental studies. Using different spindle speed and feed in the test process of chip morphology and chip removal condition respectively and drill bit, the abrasion of guide block is analyzed using single factor method is suitable for the machine clamp type TC4 titanium alloy drilling deep hole drill in the best condition, get the best speed, the best feeding, for deep hole drill machine clamp type provides effective of TC4 titanium alloy drilling processing parameters.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122974580","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00146
Wx Zhang
Based on the Hamiltonian system, a numerical method of boundary integral is proposed for solving the problems of mechanical boundary conditions, especially those with complex geometric boundary. This method is based on the eigensolution of analytic form and realizes the solution of the problem through twice integration. On the one hand, the eigenvalue equation is established by directly integrating the eigenvalues of analytic form on the boundary, and the eigenvalues corresponding to the eigenvalues can meet the boundary conditions in an average sense; on the other hand, taking the eigenvalues of each order as the weight function, through the weighted integration on the boundary, the algebraic equations on the expansion of the eigenvalues are established to realize the Effective handling.
{"title":"Study on Complex Geometric Boundary Problems in Hamiltonian system","authors":"Wx Zhang","doi":"10.1109/ICEDME50972.2020.00146","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00146","url":null,"abstract":"Based on the Hamiltonian system, a numerical method of boundary integral is proposed for solving the problems of mechanical boundary conditions, especially those with complex geometric boundary. This method is based on the eigensolution of analytic form and realizes the solution of the problem through twice integration. On the one hand, the eigenvalue equation is established by directly integrating the eigenvalues of analytic form on the boundary, and the eigenvalues corresponding to the eigenvalues can meet the boundary conditions in an average sense; on the other hand, taking the eigenvalues of each order as the weight function, through the weighted integration on the boundary, the algebraic equations on the expansion of the eigenvalues are established to realize the Effective handling.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134055437","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00071
Weiyi Wu, Lu Gao, Yangyang Zhang, Siyu Li
Wear is the main cause of failure of gear transmission system. In order to solve the problem that it is difficult to extract fault features from complex environmental noise for condition recognition, this paper proposes a method based on EEMD and INPP for gearbox wear condition recognition. Firstly, EEMD method is used to decompose the original vibration signal of gearbox, and then the decomposition results are sorted by kurtosis criterion, and the components with large kurtosis index are selected for time-frequency domain analysis to get the time-frequency domain high dimensional feature set; then the improved Neighborhood Preserving Project (INPP) algorithm is used to reduce the dimension of high-dimensional features, and then the reduced dimension features are obtained for state recognition. Finally, the algorithm is verified by the vibration response data of gearbox and compare with several algorithms, and the results show that the proposed algorithm has stable dimensionality reduction effect, good classification effect, and shows the effectiveness of the method.
{"title":"A recognition method for gearbox wear state based on EEMD and INPP","authors":"Weiyi Wu, Lu Gao, Yangyang Zhang, Siyu Li","doi":"10.1109/ICEDME50972.2020.00071","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00071","url":null,"abstract":"Wear is the main cause of failure of gear transmission system. In order to solve the problem that it is difficult to extract fault features from complex environmental noise for condition recognition, this paper proposes a method based on EEMD and INPP for gearbox wear condition recognition. Firstly, EEMD method is used to decompose the original vibration signal of gearbox, and then the decomposition results are sorted by kurtosis criterion, and the components with large kurtosis index are selected for time-frequency domain analysis to get the time-frequency domain high dimensional feature set; then the improved Neighborhood Preserving Project (INPP) algorithm is used to reduce the dimension of high-dimensional features, and then the reduced dimension features are obtained for state recognition. Finally, the algorithm is verified by the vibration response data of gearbox and compare with several algorithms, and the results show that the proposed algorithm has stable dimensionality reduction effect, good classification effect, and shows the effectiveness of the method.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129074685","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00102
L. Yan, X. An
In this paper, the hot diaphragm performing process for the pre-forms of composite hat-stiffened stringers was studied. The effects of molding temperature, deformation rate and diaphragm on hot diaphragm performing process were analyzed. The results showed that the pre-forms of composites hat-shaped stringers were manufactured successfully through hot diaphragm performing process and then they were cured by the autoclave. The pre-forming temperature was 75°C and the cured stringers met the requirement of the nondestructive testing. The molding temperature and vacuum rate were optimized simultaneously to ensure that prepreg had best ability to slip. Increasing thickness and stiffness of the diaphragm could significantly improve the molding quality of hot diaphragm performing process. Finally, the hot-shaped stringers and the skin of the composite hat-stiffened composite panels were assembled and then they were successfully prepared by the co-bonding process, which effectively reduced the manufacturing cost of the composites.
{"title":"Study on molding Process for hat-stiffened composite panels","authors":"L. Yan, X. An","doi":"10.1109/ICEDME50972.2020.00102","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00102","url":null,"abstract":"In this paper, the hot diaphragm performing process for the pre-forms of composite hat-stiffened stringers was studied. The effects of molding temperature, deformation rate and diaphragm on hot diaphragm performing process were analyzed. The results showed that the pre-forms of composites hat-shaped stringers were manufactured successfully through hot diaphragm performing process and then they were cured by the autoclave. The pre-forming temperature was 75°C and the cured stringers met the requirement of the nondestructive testing. The molding temperature and vacuum rate were optimized simultaneously to ensure that prepreg had best ability to slip. Increasing thickness and stiffness of the diaphragm could significantly improve the molding quality of hot diaphragm performing process. Finally, the hot-shaped stringers and the skin of the composite hat-stiffened composite panels were assembled and then they were successfully prepared by the co-bonding process, which effectively reduced the manufacturing cost of the composites.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116047545","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00165
Chen Wang, Shukun Cao, Zijian Cao, Yong Zhang, Lin Zhao
Problems in car rides often lead to more serious consequences, and cause social stability adverse effects. The safety of amusement facilities has always been the most important part in the design, construction and operation of amusement facilities. Therefore, starting from the safety issues of the amusement facilities, the HAZOP analysis method was used to analyze the human factors of the car amusement facilities in the amusement facilities, and the deviations of humans factors during the design and operation of the equipment were concluded, so that the deviations were eliminated or reduced in summary.
{"title":"Application of HAZOP Analysis Method in Vehicle Amusement Facilities","authors":"Chen Wang, Shukun Cao, Zijian Cao, Yong Zhang, Lin Zhao","doi":"10.1109/ICEDME50972.2020.00165","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00165","url":null,"abstract":"Problems in car rides often lead to more serious consequences, and cause social stability adverse effects. The safety of amusement facilities has always been the most important part in the design, construction and operation of amusement facilities. Therefore, starting from the safety issues of the amusement facilities, the HAZOP analysis method was used to analyze the human factors of the car amusement facilities in the amusement facilities, and the deviations of humans factors during the design and operation of the equipment were concluded, so that the deviations were eliminated or reduced in summary.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116743860","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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