Pub Date : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00131
X. Lei, Shanfeng Fu, Rui Yin, Haibo Pu, Wei Wang, Bing Hu, Jun Li
This paper introduces a wireless intelligent unlocking system based on STM32F103C8T6 single chip microcontroller. The single chip microcontroller is the main control system, Wi-Fi technology is used as the transmission actuator, and the webpage and mobile phone are used as the control part, and applying the steering engine power unit, power module, transmission actuator and other equipment to realize the functions of automatic unlocking according to the curriculum and forced unlocking by mobile phone or webpage. The system is security-emphasized and anti-theft, low in price, and easy to operate.
{"title":"Design of Intelligent Unlocking System in Computer Room Based on Embedded Technology","authors":"X. Lei, Shanfeng Fu, Rui Yin, Haibo Pu, Wei Wang, Bing Hu, Jun Li","doi":"10.1109/ICEDME50972.2020.00131","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00131","url":null,"abstract":"This paper introduces a wireless intelligent unlocking system based on STM32F103C8T6 single chip microcontroller. The single chip microcontroller is the main control system, Wi-Fi technology is used as the transmission actuator, and the webpage and mobile phone are used as the control part, and applying the steering engine power unit, power module, transmission actuator and other equipment to realize the functions of automatic unlocking according to the curriculum and forced unlocking by mobile phone or webpage. The system is security-emphasized and anti-theft, low in price, and easy to operate.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"7 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":"114147612","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/ICEDME50972.2020.00088
X. Liu, R. Xie, W. Xu, Y. Xing, X. Huang
An automatic and manual control system of cyclic pressure test was developed in consideration of request of water penetration test and structural wind pressure resistance test under cyclic pressure. The system is composed of a pressure chamber used for testing curtain wall, a blower, a pressure control drive equipment, an electric equipment of the pressure control, etc. It can make the chamber pressure fluctuate between high and low values and adjust the cyclic period. Also, the system can realize arbitrary switching between automatic control and manual control on fluctuating pressure of the chamber, and it has the advantages of high automation, simple operation, safety and reliability.
{"title":"Investigation on automatic control system of cyclic pressure test for curtain wall","authors":"X. Liu, R. Xie, W. Xu, Y. Xing, X. Huang","doi":"10.1109/ICEDME50972.2020.00088","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00088","url":null,"abstract":"An automatic and manual control system of cyclic pressure test was developed in consideration of request of water penetration test and structural wind pressure resistance test under cyclic pressure. The system is composed of a pressure chamber used for testing curtain wall, a blower, a pressure control drive equipment, an electric equipment of the pressure control, etc. It can make the chamber pressure fluctuate between high and low values and adjust the cyclic period. Also, the system can realize arbitrary switching between automatic control and manual control on fluctuating pressure of the chamber, and it has the advantages of high automation, simple operation, safety and reliability.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"15 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":"114162288","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}
In order to avoid the interference and lateral clearance between the non-circular synchronous pulley and synchronous belt, to improve the carrying capacity and transmission accuracy of the synchronous pulley, and to reduce the noise in the process of transmission. In this paper, the conjugate engagement theorem of generating method was applied to the calculation of the tooth profile of the non-circular synchronous pulley. The tooth profile of synchronous pulley was obtained by enveloping the pitch curve of non-circular synchronous pulley with a rack cutter and a local quadrant method was proposed to extract the complete tooth profile points based on the distribution characteristics of the data points of the envelope curve. The auxiliary design program was compiled by MATLAB, and through the calculation and comparison of examples, it was found that the method was simple, reliable, and highly accurate.
{"title":"Design of Tooth Profile of Non-circular Synchronous Belt Pulley Based on Conjugate Engagement and Local Quadrant Method","authors":"Xianbin Bian, Chennan Yu, Xiaojing He, Jianneng Chen","doi":"10.1109/ICEDME50972.2020.00093","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00093","url":null,"abstract":"In order to avoid the interference and lateral clearance between the non-circular synchronous pulley and synchronous belt, to improve the carrying capacity and transmission accuracy of the synchronous pulley, and to reduce the noise in the process of transmission. In this paper, the conjugate engagement theorem of generating method was applied to the calculation of the tooth profile of the non-circular synchronous pulley. The tooth profile of synchronous pulley was obtained by enveloping the pitch curve of non-circular synchronous pulley with a rack cutter and a local quadrant method was proposed to extract the complete tooth profile points based on the distribution characteristics of the data points of the envelope curve. The auxiliary design program was compiled by MATLAB, and through the calculation and comparison of examples, it was found that the method was simple, reliable, and highly accurate.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"10 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":"114932658","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/ICEDME50972.2020.00074
Xiaohui Song, Qiang Zhang, Lili Wei, Yi Lu, Tongchun Feng, Zhibin Liu, Zhe Liu, Pei Wang, Liangbin Guo, Lei Gu
Contact reed and contact subassembly are used in kinds of mechanical inertial apparatus, and they are is the media between electric signal and mechanical movement. In this paper, in accordance with the problem in the process of producing, through the experiment and analysis, the cause is found and processing technique to solving the problem is presented. The technique can be used in the producing process and can increase the passing rate of the gyroscope. The technique can play an important role in improving the overall assembly quality of the instrument and the ex-factory pass rate, effectively improving the reliability of spacecraft assembly.
{"title":"Study on the Influencing Factors of Assembly Precision about Rate Gyroscope","authors":"Xiaohui Song, Qiang Zhang, Lili Wei, Yi Lu, Tongchun Feng, Zhibin Liu, Zhe Liu, Pei Wang, Liangbin Guo, Lei Gu","doi":"10.1109/ICEDME50972.2020.00074","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00074","url":null,"abstract":"Contact reed and contact subassembly are used in kinds of mechanical inertial apparatus, and they are is the media between electric signal and mechanical movement. In this paper, in accordance with the problem in the process of producing, through the experiment and analysis, the cause is found and processing technique to solving the problem is presented. The technique can be used in the producing process and can increase the passing rate of the gyroscope. The technique can play an important role in improving the overall assembly quality of the instrument and the ex-factory pass rate, effectively improving the reliability of spacecraft assembly.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"91 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":"125395217","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/ICEDME50972.2020.00129
Feifei Tian, Siyuan Li
Moving mirror supporting mechanism is a key component of Fourier transform spectrometer(FTS), its motion precision and the maximum range of travel affect the performance of the instrument. Based on the double parallelogram structure, a symmetrical flexible moving mirror supporting mechanism is designed. Simulation results show the system permits ± 5 mm of mirror travel with the tilt value of less than ±4.8urad and the shear value of less than 3um. Excellent shear performance and tilt performance make it well suited for most FTS instruments.
{"title":"Design and Analysis of a Moving Mirror Supporting Mechanism for Fourier Transform Spectroscopy","authors":"Feifei Tian, Siyuan Li","doi":"10.1109/ICEDME50972.2020.00129","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00129","url":null,"abstract":"Moving mirror supporting mechanism is a key component of Fourier transform spectrometer(FTS), its motion precision and the maximum range of travel affect the performance of the instrument. Based on the double parallelogram structure, a symmetrical flexible moving mirror supporting mechanism is designed. Simulation results show the system permits ± 5 mm of mirror travel with the tilt value of less than ±4.8urad and the shear value of less than 3um. Excellent shear performance and tilt performance make it well suited for most FTS instruments.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"11 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":"128120915","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/ICEDME50972.2020.00053
Wenlin Hu, C. Sun, Dongbing Li
By introducing failure information, an aggressive problem of directly using zero-failure datas to estimate the reliability and parameters of the equipment is solved. For one type of missile rolling bearing which is in accord with Weibull distribution, the paper proves the expected Bayesian estimation of the failure probability with zero-failure data. A modified method is carried out to determine the time of timing truncation test. With the failure information, it derives the weighted comprehensive estimation method of failure probability. On the other hand, it provides the weighted least square estimation method of the parameters in Weibull distribution. Based on the datas of the rolling bearing, it gives the weighted comprehensive estimations of the parameters and reliability. The difference with shape parameter is reduced by 9.85% and the difference with reliability is reduced by 33.3%. The results indicates that the modified method could be more reasonable and practical.
{"title":"Estimations of Reliability Parameters on One Type of Missile by Introducing Failure Information","authors":"Wenlin Hu, C. Sun, Dongbing Li","doi":"10.1109/ICEDME50972.2020.00053","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00053","url":null,"abstract":"By introducing failure information, an aggressive problem of directly using zero-failure datas to estimate the reliability and parameters of the equipment is solved. For one type of missile rolling bearing which is in accord with Weibull distribution, the paper proves the expected Bayesian estimation of the failure probability with zero-failure data. A modified method is carried out to determine the time of timing truncation test. With the failure information, it derives the weighted comprehensive estimation method of failure probability. On the other hand, it provides the weighted least square estimation method of the parameters in Weibull distribution. Based on the datas of the rolling bearing, it gives the weighted comprehensive estimations of the parameters and reliability. The difference with shape parameter is reduced by 9.85% and the difference with reliability is reduced by 33.3%. The results indicates that the modified method could be more reasonable and practical.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"2 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":"126527697","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/ICEDME50972.2020.00024
Y. Q. Huang, C. Liu
A waveguide-coaxial converter for Ka band is introduced. This converter uses the good wideband matching characteristics of the single-ridge waveguide and combines with a Chebyshev impedance converter to achieve impedance matching in the entire Ka band. HFSS full-wave simulation software was used for integrated design, RF simulation and structural optimization of the probe and impedance conversion. After processing and measurement, the converter has a back-to-back insertion loss of S21 ≤ 0.56 dB and a VSWR ≤ 1.24 in the frequency range of 26.5~40 GHz, the indicators are good.
{"title":"Waveguide-coaxial converter based on single-ridge waveguide impedance transformation in Ka band","authors":"Y. Q. Huang, C. Liu","doi":"10.1109/ICEDME50972.2020.00024","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00024","url":null,"abstract":"A waveguide-coaxial converter for Ka band is introduced. This converter uses the good wideband matching characteristics of the single-ridge waveguide and combines with a Chebyshev impedance converter to achieve impedance matching in the entire Ka band. HFSS full-wave simulation software was used for integrated design, RF simulation and structural optimization of the probe and impedance conversion. After processing and measurement, the converter has a back-to-back insertion loss of S21 ≤ 0.56 dB and a VSWR ≤ 1.24 in the frequency range of 26.5~40 GHz, the indicators are good.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"115 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":"124809012","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/ICEDME50972.2020.00111
Xiaoli Wang, Ruixin Mu, Caihong Wang
The self-piercing riveting process of 6016 aluminum alloy with 1 mm thickness and DC03 structural steel with 1.5 mm thickness was studied, the process of self-piercing riveting of dissimilar materials between 6016 aluminum alloy and DC03 steel plate is simulated based on DEFORM-2D, and the riveting experiments of plates at different placement sequence are carried out by using flat bottom die. The results show that when 6016 aluminum alloy sheet is placed in the upper layer, the forming quality of self-piercing riveting is better. The experimental values of undercut, head height and residual thickness are 0.585 mm, 0.069 mm and 0.212 mm respectively. The relative errors between experimental values and simulation values are 3.62%, 7.81% and 2.42% respectively, and the correctness of the finite element simulation is verified. In addition, the relationship between undercut and die parameters of self-piercing riveting for steel-aluminum dissimilar materials is analyzed, and it is found that undercut increases with the increase of die width, while it decreases with the increase of die depth.
{"title":"Numerical Simulation and Experimental Study on Self-piercing Riveting of DC03/6016 Dissimilar Sheets","authors":"Xiaoli Wang, Ruixin Mu, Caihong Wang","doi":"10.1109/ICEDME50972.2020.00111","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00111","url":null,"abstract":"The self-piercing riveting process of 6016 aluminum alloy with 1 mm thickness and DC03 structural steel with 1.5 mm thickness was studied, the process of self-piercing riveting of dissimilar materials between 6016 aluminum alloy and DC03 steel plate is simulated based on DEFORM-2D, and the riveting experiments of plates at different placement sequence are carried out by using flat bottom die. The results show that when 6016 aluminum alloy sheet is placed in the upper layer, the forming quality of self-piercing riveting is better. The experimental values of undercut, head height and residual thickness are 0.585 mm, 0.069 mm and 0.212 mm respectively. The relative errors between experimental values and simulation values are 3.62%, 7.81% and 2.42% respectively, and the correctness of the finite element simulation is verified. In addition, the relationship between undercut and die parameters of self-piercing riveting for steel-aluminum dissimilar materials is analyzed, and it is found that undercut increases with the increase of die width, while it decreases with the increase of die depth.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"98 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":"124894279","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/ICEDME50972.2020.00075
X. Liu, Hao Zhang
When a medium-sized crawler excavator works on a hard and concave road surface, a small number of rollers are stressed. Due to low working speed, Static analysis is still necessary. First of all, a three-point support model is established and the offset range of center-of-gravity is determined. The bearing capacity of the roller is analyzed in horizontal state and 10° inclined state. The forces on the three supporting rollers are calculated during rotation of the shovel arm at 30° intervals. Then, the three-dimensional mechanical model of the roller is established by ANSYS software. The stress and strain of two working states are simulated. The scheme of optimizing mass block design is put forward. The calculation results can also provide reference and basis for strength analysis and stability analysis of crawler excavator chassis.
{"title":"Finite element analysis of the forces on the roller of a medium-sized crawler excavator","authors":"X. Liu, Hao Zhang","doi":"10.1109/ICEDME50972.2020.00075","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00075","url":null,"abstract":"When a medium-sized crawler excavator works on a hard and concave road surface, a small number of rollers are stressed. Due to low working speed, Static analysis is still necessary. First of all, a three-point support model is established and the offset range of center-of-gravity is determined. The bearing capacity of the roller is analyzed in horizontal state and 10° inclined state. The forces on the three supporting rollers are calculated during rotation of the shovel arm at 30° intervals. Then, the three-dimensional mechanical model of the roller is established by ANSYS software. The stress and strain of two working states are simulated. The scheme of optimizing mass block design is put forward. The calculation results can also provide reference and basis for strength analysis and stability analysis of crawler excavator chassis.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"92 8 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":"123169111","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/ICEDME50972.2020.00107
Jianqiu Hou
Ti-based Sn-Sb-Pb oxide coating electrode was prepared by high temperature thermal oxidation method. The obtained electrode has high electrocatalytic activity and good stability. The surface morphology, oxygen evolution potential and service life of each electrode were examined by scanning electron microscope, oxygen evolution potential measurement and accelerated life test. Phenol was taken as the target organic matter. Under the conditions of applied voltage 8V and water temperature 30°C, the COD removal rate of 100mg/L phenol simulated wastewater was electrolyzed, and the COD removal rate of phenol solution could reach 71.1% in 60min.
{"title":"Study on Electrocatalytic Oxidation Degradation of Phenol by Ti-based Sn-Sb-Pb Oxide Coating Anode","authors":"Jianqiu Hou","doi":"10.1109/ICEDME50972.2020.00107","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00107","url":null,"abstract":"Ti-based Sn-Sb-Pb oxide coating electrode was prepared by high temperature thermal oxidation method. The obtained electrode has high electrocatalytic activity and good stability. The surface morphology, oxygen evolution potential and service life of each electrode were examined by scanning electron microscope, oxygen evolution potential measurement and accelerated life test. Phenol was taken as the target organic matter. Under the conditions of applied voltage 8V and water temperature 30°C, the COD removal rate of 100mg/L phenol simulated wastewater was electrolyzed, and the COD removal rate of phenol solution could reach 71.1% in 60min.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"77 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":"123226148","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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