Pub Date : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00397
Li Liu
With the development of science and technology, especially the application of big data technology, the role of computer networks has become more and more significant. Computer network has a profound impact on people's life and work, and has even become a part of life and work. However, computer network technology has also exposed some problems while providing convenience to people's lives. For example, the resulting information security issues pose a threat to people's personal privacy, corporate security, national security, etc., thereby affecting the sustainable development of computer network technology. Based on this, we must strengthen the research on computer network security. In particular, it is necessary to strengthen the research on the phenomenon of computer network information leakage and its causes, and strengthen the computer network security management. At the same time, we should also take necessary preventive measures from both technical and management aspects to ensure the safety of computer network information and reduce computer network threats. In view of this, this article will analyze and explore the current factors affecting computer network security on the basis of related concepts of computer network information security. The author analyzes how we should strengthen defenses from the perspective of technology and management to ensure the security of network information.
{"title":"Discussion and Practice of Computer Network Information and Network Security Protection Strategy","authors":"Li Liu","doi":"10.1109/ICMCCE51767.2020.00397","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00397","url":null,"abstract":"With the development of science and technology, especially the application of big data technology, the role of computer networks has become more and more significant. Computer network has a profound impact on people's life and work, and has even become a part of life and work. However, computer network technology has also exposed some problems while providing convenience to people's lives. For example, the resulting information security issues pose a threat to people's personal privacy, corporate security, national security, etc., thereby affecting the sustainable development of computer network technology. Based on this, we must strengthen the research on computer network security. In particular, it is necessary to strengthen the research on the phenomenon of computer network information leakage and its causes, and strengthen the computer network security management. At the same time, we should also take necessary preventive measures from both technical and management aspects to ensure the safety of computer network information and reduce computer network threats. In view of this, this article will analyze and explore the current factors affecting computer network security on the basis of related concepts of computer network information security. The author analyzes how we should strengthen defenses from the perspective of technology and management to ensure the security of network information.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"17 1","pages":"1810-1813"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74423405","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00067
Jianwen He
In early 2020, novel coronavirus pneumonia broke out. In order to prevent the spread of the disease, governments around the world asked the masses to wear masks. However, there are still many people who do not wear masks in public places. To solve this problem, this paper proposes a mask detection device based on yolo3 framework. The device uses the yolov3 algorithm to extract the face prediction area, and uses the gray image to calculate the skin exposure rate of the mouth and nose of the face, so as to judge whether the recognized person is wearing a mask or not and whether the mask is wearing correctly. The model is deployed on the hardware to facilitate the staff to carry the detection. The experimental results show that the recognition rate is 86.6%.
{"title":"Mask detection device based on YOLOv3 framework","authors":"Jianwen He","doi":"10.1109/ICMCCE51767.2020.00067","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00067","url":null,"abstract":"In early 2020, novel coronavirus pneumonia broke out. In order to prevent the spread of the disease, governments around the world asked the masses to wear masks. However, there are still many people who do not wear masks in public places. To solve this problem, this paper proposes a mask detection device based on yolo3 framework. The device uses the yolov3 algorithm to extract the face prediction area, and uses the gray image to calculate the skin exposure rate of the mouth and nose of the face, so as to judge whether the recognized person is wearing a mask or not and whether the mask is wearing correctly. The model is deployed on the hardware to facilitate the staff to carry the detection. The experimental results show that the recognition rate is 86.6%.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"19 1","pages":"268-271"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74451419","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00470
Xiaowei Ding, Aoyu He, Mingxing Fu, Yan Han
In this paper, a transmit digital multi-beam forming method based on hyperbolic fractional delay filter is presented, which provides effective time delay compensation and can reduce the consumption of hardware resources. In the proposed method,firstly, the hyperbolic function is expanded in the way of infinite product, and only two sub-filters are included in the expansion. Then, the hyperbolic fractional delay filter is obtained by using the solved sub-filter, so as to realize the clock fractional delay compensation. Then, the transmit digital multibeam forming is realized by using the designed fractional delay filter based on hyperbolic structure. Finally, the feasibility and effectiveness of the proposed design method are verified by experimental simulation.
{"title":"Transmit digital multi-beam forming based on hyperbolic fractional delay filter","authors":"Xiaowei Ding, Aoyu He, Mingxing Fu, Yan Han","doi":"10.1109/ICMCCE51767.2020.00470","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00470","url":null,"abstract":"In this paper, a transmit digital multi-beam forming method based on hyperbolic fractional delay filter is presented, which provides effective time delay compensation and can reduce the consumption of hardware resources. In the proposed method,firstly, the hyperbolic function is expanded in the way of infinite product, and only two sub-filters are included in the expansion. Then, the hyperbolic fractional delay filter is obtained by using the solved sub-filter, so as to realize the clock fractional delay compensation. Then, the transmit digital multibeam forming is realized by using the designed fractional delay filter based on hyperbolic structure. Finally, the feasibility and effectiveness of the proposed design method are verified by experimental simulation.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"1 1","pages":"2164-2168"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72837885","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00175
Xiang Yongsheng, Wu Dongsheng, Ping Lanlan
In view of the yaw problem of a flat tire vehicle, a front wheel steering controller based on MPC is proposed to correct the vehicle's yaw and ensure that the vehicle runs on the safe path. Based on the model predictive control, the simplified double track vehicle model is selected, and the vehicle motion state is described by differential equation. The prediction equation is derived by linear discretization. Considering the vehicle stability factor, it is added as a constraint condition and transformed into the standard quadratic form to calculate the optimal solution. The closed-loop system is constructed for simulation. The results show that: the front wheel active steering controller based on MPC can keep the vehicle running stably and effectively control the running track of the flat tire vehicle. The sideslip angle of the center of mass, the sideslip angle of the tire and the yaw rate are all within the stability requirements, so that the vehicle can drive in the safe path and achieve the trajectory control effect of the tire burst vehicle.
{"title":"Simulation Analysis of Trajectory Control of Tire Bursting Vehicles Based on MPC","authors":"Xiang Yongsheng, Wu Dongsheng, Ping Lanlan","doi":"10.1109/ICMCCE51767.2020.00175","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00175","url":null,"abstract":"In view of the yaw problem of a flat tire vehicle, a front wheel steering controller based on MPC is proposed to correct the vehicle's yaw and ensure that the vehicle runs on the safe path. Based on the model predictive control, the simplified double track vehicle model is selected, and the vehicle motion state is described by differential equation. The prediction equation is derived by linear discretization. Considering the vehicle stability factor, it is added as a constraint condition and transformed into the standard quadratic form to calculate the optimal solution. The closed-loop system is constructed for simulation. The results show that: the front wheel active steering controller based on MPC can keep the vehicle running stably and effectively control the running track of the flat tire vehicle. The sideslip angle of the center of mass, the sideslip angle of the tire and the yaw rate are all within the stability requirements, so that the vehicle can drive in the safe path and achieve the trajectory control effect of the tire burst vehicle.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"46 4","pages":"796-801"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72598031","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00242
Xiaoling Xia, Le Li
Recently, deep learning has been widely used in the field of recommendation systems. Sequence recommendation is an important direction of the current recommendation system, which uses the user's behavior sequence information to calculate the possibility of the user interacting with the target item. Recent work embeds the original features into low-dimensional vectors, then uses RNN or Transformer to extract behavior sequence information, and finally inputs to the MLP layer to get the recommended results. These methods do not consider that the items of different positions have different effects on the next item, and the recent item in the real world often have a greater impact on the target item than the previous ones. So we propose MAUPRec models to solve such problems. Each user's historical behavior learns its corresponding weight through attention mechanism, which better reflects the interest of users at different times. In addition, we find that feedback information means user's preference to some extent, so we also introduce feedback information as user's preference representation in the model. We conducted detailed comparison experiments with the very popular models in the industry on different public data sets, and the results showed that our model MAUPRec has good performance.
{"title":"Based on Multiple Attention and User Preferences for Recommendation","authors":"Xiaoling Xia, Le Li","doi":"10.1109/ICMCCE51767.2020.00242","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00242","url":null,"abstract":"Recently, deep learning has been widely used in the field of recommendation systems. Sequence recommendation is an important direction of the current recommendation system, which uses the user's behavior sequence information to calculate the possibility of the user interacting with the target item. Recent work embeds the original features into low-dimensional vectors, then uses RNN or Transformer to extract behavior sequence information, and finally inputs to the MLP layer to get the recommended results. These methods do not consider that the items of different positions have different effects on the next item, and the recent item in the real world often have a greater impact on the target item than the previous ones. So we propose MAUPRec models to solve such problems. Each user's historical behavior learns its corresponding weight through attention mechanism, which better reflects the interest of users at different times. In addition, we find that feedback information means user's preference to some extent, so we also introduce feedback information as user's preference representation in the model. We conducted detailed comparison experiments with the very popular models in the industry on different public data sets, and the results showed that our model MAUPRec has good performance.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"21 1","pages":"1102-1106"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73765113","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 : 2020-12-01DOI: 10.1109/icmcce51767.2020.00081
Song Bin, L. Yan, Luo Lei, Liang Yingtang
This paper analyzes in detail the failure of MCL1204 air compressor, an important equipment in a refinery. Based on the mathematical modeling of the gas leakage of the bulkhead, the influence of the factor on the leakage is analyzed theoretically. With the help of laser alignment, the key parts of the unit were measured, the main cause of the fault was found and the fault was successfully repaired.
{"title":"Fault analysis and treatment of large centrifugal air compressor with insufficient discharge capacity","authors":"Song Bin, L. Yan, Luo Lei, Liang Yingtang","doi":"10.1109/icmcce51767.2020.00081","DOIUrl":"https://doi.org/10.1109/icmcce51767.2020.00081","url":null,"abstract":"This paper analyzes in detail the failure of MCL1204 air compressor, an important equipment in a refinery. Based on the mathematical modeling of the gas leakage of the bulkhead, the influence of the factor on the leakage is analyzed theoretically. With the help of laser alignment, the key parts of the unit were measured, the main cause of the fault was found and the fault was successfully repaired.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"15 1","pages":"335-339"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73920893","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00148
Lei Qi, Jin H. Huang, Shuyun Zhan, Weici Liu, Hongjie Zhu, Yuwang Liu
In this paper, a laser thermal lens measuring device which is based on equal inclination interference fringes produced by Michelson interferometer is realized. In this experiment, the thermal effect of low power laser can be observed as the ink sample after dilution has good endothermic properties. The experimental results show that the number of bright and dark rings is 6 in the absence of medium. With the increase of the concentration of the ink sample, the number of dark rings is also changing, and the spacing is relatively larger. Therefore, the thermal lens effect of laser can be observed by adjusting device. The focal length of the thermal lens is also calculated. The device has high application value in the study of laser thermal lens effect and medium absorption.
{"title":"Laser thermal lens measurement based on Michelson interferometer","authors":"Lei Qi, Jin H. Huang, Shuyun Zhan, Weici Liu, Hongjie Zhu, Yuwang Liu","doi":"10.1109/ICMCCE51767.2020.00148","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00148","url":null,"abstract":"In this paper, a laser thermal lens measuring device which is based on equal inclination interference fringes produced by Michelson interferometer is realized. In this experiment, the thermal effect of low power laser can be observed as the ink sample after dilution has good endothermic properties. The experimental results show that the number of bright and dark rings is 6 in the absence of medium. With the increase of the concentration of the ink sample, the number of dark rings is also changing, and the spacing is relatively larger. Therefore, the thermal lens effect of laser can be observed by adjusting device. The focal length of the thermal lens is also calculated. The device has high application value in the study of laser thermal lens effect and medium absorption.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"7 1","pages":"673-676"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74127814","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00200
Minchuan Huang, Hsianglin Huang, I-Chien Chen, Aiguo Wang
In order to avoid the spread of new coronavirus, it is necessary to keep a distance, wear masks and wash hands, not close contact. When the academic research or market survey needs to fill in the questionnaire, it is a safe and necessary choice to use the network electronic form. In order to prevent the spread of virus, it is necessary to keep a safe distance between people. The demand for electronic forms is more diverse and vigorous. To prevent the spread of virus through interviews and questionnaires, we can change the way of filling in electronic forms to achieve the purpose of maintaining a safe distance. As a result, the demand for electronic forms has increased, and the electronic forms can be more convenient. At the same time, the anti-counterfeiting function of electronic signature is used. The undeniable characteristics of personal signature can be customized and diversified. At present, the system development and technology of web forms are various and mature. In order to increase the employability of college students, the implementation course of online spreadsheet is added to the professional courses of University, which has gradually become a popular option of software engineering for students' graduation design. From the system analysis and system design, JavaScript, HTML5, CSS3 and other technologies are selected. Through the programming framework on the server, through the browser, it is convenient to use the web spreadsheet. The system functions are successfully implemented, and the graduation design of university professional courses is completed, which is a reference for successful cases of course practice. This model is a successful example of system development. Combined with the theory of university courses and the practice of project design, the system development, design and system testing are completed successfully within the effective time limit. From the system analysis and system design, JavaScript, HTML5, CSS3 and other technologies are selected. Through the programming framework on the server, through the browser, it is convenient to use the web spreadsheet. The system functions are successfully implemented, and the graduation design of university professional courses is completed, which is a reference for successful cases of course practice. This model is a successful example of system development. Combined with the theory of university courses and the practice of project design, the system development, design and system testing are completed successfully within the effective time limit.
{"title":"Design of Web table system","authors":"Minchuan Huang, Hsianglin Huang, I-Chien Chen, Aiguo Wang","doi":"10.1109/ICMCCE51767.2020.00200","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00200","url":null,"abstract":"In order to avoid the spread of new coronavirus, it is necessary to keep a distance, wear masks and wash hands, not close contact. When the academic research or market survey needs to fill in the questionnaire, it is a safe and necessary choice to use the network electronic form. In order to prevent the spread of virus, it is necessary to keep a safe distance between people. The demand for electronic forms is more diverse and vigorous. To prevent the spread of virus through interviews and questionnaires, we can change the way of filling in electronic forms to achieve the purpose of maintaining a safe distance. As a result, the demand for electronic forms has increased, and the electronic forms can be more convenient. At the same time, the anti-counterfeiting function of electronic signature is used. The undeniable characteristics of personal signature can be customized and diversified. At present, the system development and technology of web forms are various and mature. In order to increase the employability of college students, the implementation course of online spreadsheet is added to the professional courses of University, which has gradually become a popular option of software engineering for students' graduation design. From the system analysis and system design, JavaScript, HTML5, CSS3 and other technologies are selected. Through the programming framework on the server, through the browser, it is convenient to use the web spreadsheet. The system functions are successfully implemented, and the graduation design of university professional courses is completed, which is a reference for successful cases of course practice. This model is a successful example of system development. Combined with the theory of university courses and the practice of project design, the system development, design and system testing are completed successfully within the effective time limit. From the system analysis and system design, JavaScript, HTML5, CSS3 and other technologies are selected. Through the programming framework on the server, through the browser, it is convenient to use the web spreadsheet. The system functions are successfully implemented, and the graduation design of university professional courses is completed, which is a reference for successful cases of course practice. This model is a successful example of system development. Combined with the theory of university courses and the practice of project design, the system development, design and system testing are completed successfully within the effective time limit.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"55 1","pages":"910-915"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84872124","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 : 2020-12-01DOI: 10.1109/ICMCCE51767.2020.00391
Jun Zhang, Meina Zhang
To improve flight economy and environmental friendliness, a vertical flight profile optimization method considering the cost of pollutant emissions (SO2, CO, NOx, CO2 and HC) cost is studied. Firstly, in this paper, a pollutant emission price weight, emission factor and a comprehensive cost index are proposed to establish a direct operating costs calculation model considering the pollutant emissions cost based on the ICAO baseline emission data. Secondly, based on the energy state method and the mass-point dynamics, a mass-point dynamic model of the vertical flight profile is established. Thirdly, the objective function and constraint conditions of trajectory optimization in each flight phase are derived based on the minimum principle of Pontryagin. Finally, taking B737-800 as an example, the Particle Swarm Optimization (PSO) algorithm is used to optimize the objective functions as well as fight parameters under a proper comprehensive cost index, and through simulation to realize the trajectory optimization with the optimal cost as the goal. Under the same conditions, compared the optimization result with the traditional cost index of 30, the fuel cost is reduced by 4.2%, total emissions of pollutants decreased by 4.3%, flight time increased by 7.9%, but the total cost of flight decreased by 2.1%. The simulation results show that the vertical profile trajectory optimization method proposed in this paper can effectively reduce the emissions of SO2, HC, CO, NOx, CO2 and the direct operating costs, improving the flight economic efficiency for airlines.
{"title":"Trajectory Optimization of Aircraft Vertical Flight Profile Based on Particle Swarm Optimization Algorithm Considering Pollutant Emission Cost","authors":"Jun Zhang, Meina Zhang","doi":"10.1109/ICMCCE51767.2020.00391","DOIUrl":"https://doi.org/10.1109/ICMCCE51767.2020.00391","url":null,"abstract":"To improve flight economy and environmental friendliness, a vertical flight profile optimization method considering the cost of pollutant emissions (SO2, CO, NOx, CO2 and HC) cost is studied. Firstly, in this paper, a pollutant emission price weight, emission factor and a comprehensive cost index are proposed to establish a direct operating costs calculation model considering the pollutant emissions cost based on the ICAO baseline emission data. Secondly, based on the energy state method and the mass-point dynamics, a mass-point dynamic model of the vertical flight profile is established. Thirdly, the objective function and constraint conditions of trajectory optimization in each flight phase are derived based on the minimum principle of Pontryagin. Finally, taking B737-800 as an example, the Particle Swarm Optimization (PSO) algorithm is used to optimize the objective functions as well as fight parameters under a proper comprehensive cost index, and through simulation to realize the trajectory optimization with the optimal cost as the goal. Under the same conditions, compared the optimization result with the traditional cost index of 30, the fuel cost is reduced by 4.2%, total emissions of pollutants decreased by 4.3%, flight time increased by 7.9%, but the total cost of flight decreased by 2.1%. The simulation results show that the vertical profile trajectory optimization method proposed in this paper can effectively reduce the emissions of SO2, HC, CO, NOx, CO2 and the direct operating costs, improving the flight economic efficiency for airlines.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"8 1","pages":"1784-1790"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85008185","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 : 2020-12-01DOI: 10.1109/icmcce51767.2020.00086
Wang Hui, Zang Yiming, Li Ze, Qian Yong, G. Sheng
High-voltage large-capacity capacitors, as an indispensable important electrical equipment in the power grid system, have important applications in many scenarios such as transmission lines, substations, and the end of distribution lines. In the course of use, if problems such as insulation aging occur, it may threaten the personal safety of the people and staff and cause huge economic losses. The purpose of partial discharge detection of high-voltage large-capacity capacitors is to detect the internal defects of the capacitor before the capacitor fails, to understand the insulation state of the equipment in time, to better monitor the deterioration process of the equipment, and to effectively understand the current reality of the equipment health status. At present, capacitor partial discharge detection methods include power frequency withstand voltage method, DC partial discharge detection method and ultrasonic detection method. Each method has some unavoidable defects. The research in this paper intends to use the partial discharge detection technology based on oscillating wave to carry out the insulation fault detection of highvoltage large-capacity capacitors. The monitoring and early warning of early capacitor failures have been realized, and the hidden faults and defects of the capacitors can be found in advance, and the safety and reliability of the equipment can be improved.
{"title":"Research on Detection Technology of Large-capacity Capacitor Based on PD of Oscillatory Wave","authors":"Wang Hui, Zang Yiming, Li Ze, Qian Yong, G. Sheng","doi":"10.1109/icmcce51767.2020.00086","DOIUrl":"https://doi.org/10.1109/icmcce51767.2020.00086","url":null,"abstract":"High-voltage large-capacity capacitors, as an indispensable important electrical equipment in the power grid system, have important applications in many scenarios such as transmission lines, substations, and the end of distribution lines. In the course of use, if problems such as insulation aging occur, it may threaten the personal safety of the people and staff and cause huge economic losses. The purpose of partial discharge detection of high-voltage large-capacity capacitors is to detect the internal defects of the capacitor before the capacitor fails, to understand the insulation state of the equipment in time, to better monitor the deterioration process of the equipment, and to effectively understand the current reality of the equipment health status. At present, capacitor partial discharge detection methods include power frequency withstand voltage method, DC partial discharge detection method and ultrasonic detection method. Each method has some unavoidable defects. The research in this paper intends to use the partial discharge detection technology based on oscillating wave to carry out the insulation fault detection of highvoltage large-capacity capacitors. The monitoring and early warning of early capacitor failures have been realized, and the hidden faults and defects of the capacitors can be found in advance, and the safety and reliability of the equipment can be improved.","PeriodicalId":6712,"journal":{"name":"2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)","volume":"16 1","pages":"356-359"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85335944","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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