Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)最新文献

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Research on Configuration Strategy of Optical Storage Charging Station 光存储充电站配置策略研究
Lu Haiqiang, Lu Shuijin, Mo Yujie
{"title":"Research on Configuration Strategy of Optical Storage Charging Station","authors":"Lu Haiqiang, Lu Shuijin, Mo Yujie","doi":"10.2991/pntim-19.2019.91","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.91","url":null,"abstract":"Energy storage charging pile participating in the joint operation of power grid can not only reduce the cost of power grid expansion, but also obtain the benefit of participating in the auxiliary management service of power grid demand side response, so as to reduce operation cost. In this paper, energy storage charging pile is used to participate in the joint operation optimization of grid demand side response, and a model of optimal allocation of container energy storage in distribution network is proposed. Based on operation strategy of Optical storage charging station vehicle, the model aims to maximize investor's income in investment cycle, considering the income of participating in the voltage regulation, the subsidy income of delaying upgrading of distribution network, its investment and operation cost, and considering the constraints of voltage regulation of distribution network, the conversion of access nodes, energy conservation, etc., so as to optimize the number and rated capacity of Optical storage charging station vehicle. Finally, the case study of ieee33 node system is carried out. The results show that optimal configuration model can make investors of optical storage charging station gain profits and improve the economy of optical storage charging station. Keywords-Distribution Network; Container Energy Storage; Optimal Configuration; Voltage Control","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"117 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":"131985457","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}
引用次数: 0
Research on Minimum Length Calculation of Skid-Mounted Small-Diameter Pipe Weight Bar 撬装小直径管重杆最小长度计算研究
X. Jijun
{"title":"Research on Minimum Length Calculation of Skid-Mounted Small-Diameter Pipe Weight Bar","authors":"X. Jijun","doi":"10.2991/pntim-19.2019.2","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.2","url":null,"abstract":"The drainage gas recovery operation with small-diameter continuous pipes is applicable to the one in natural gas well with low pressure, low production and low water content. Its advantages exhibit as the following: 1) high efficiency on continuous running of pipe string under pressure; 2) production while operation; 3) correct monitoring the position of ejection head; and 4) précised control of ejection quantity. Due to the small diameter, thin wall thickness and relative low rigidity of pipe string, it is easy to cause bending and deformation during down-hole process and affect the capability of small diameter pipe operation. Aiming at shutting and opening of the well, this thesis analyzes the force of the small-diameter pipe during down process, establishes the corresponding digital model and proposes the calculating method required to run the small-diameter pipes under different status. Taking G25-5 well as example, the appropriate minimum length of weight bar under different working status is given to verify the validness of the method to determine the minimum length of weight bar. Keywords-Skid-Mounted Small-Diameter Pipe; Drainage Gas Recovery & Weight Bar","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"5 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":"132067136","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}
引用次数: 0
Research on the Development Trend of Broadcasting Network Technology Based on K-Means Algorithm 基于k -均值算法的广播网络技术发展趋势研究
L. Yufei, Y. Li
{"title":"Research on the Development Trend of Broadcasting Network Technology Based on K-Means Algorithm","authors":"L. Yufei, Y. Li","doi":"10.2991/pntim-19.2019.34","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.34","url":null,"abstract":"With the coming of the \"5 g era\", intelligence, digital transformation is a major problem faced by radio, film and television networks. This paper uses the k-means algorithm to analyze its market demand data. According to the clustering analysis, the key attributes of broadcasting network products in the future are extracted. The clustering results can be divided into three categories, and then infer the trend of its technology development: First, the promotion of digital technology, which is from video, audio, text compression coding and modulation transmission, so that the content storage capacity is more abundant, data transmission more rapid. Second, the continuous upgrading of operation platform technology, middleware and system integration technology, including standardization technology, full-service support technology and platform establishment. Third, the improvement of basic network technology, which is from network access technology to network transmission technology, the formation of advanced technology entry point and transmission fluency. Fourth, the optimization of network technology, which is from the network architecture, to form an integrated, mature network system. Keywords-Intelligent Products; K-Means Algorithm; Clustering Analysis","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"15 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":"132138031","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}
引用次数: 0
Research on Laval Nozzle and Overall Simulation Analysis Based on High Speed Precision Air Bearing Spindle Pneumatic Turbine System 基于高速精密气轴承主轴气动涡轮系统的拉瓦尔喷嘴研究及整体仿真分析
Du Xi, Fang-Ming Zhou, L. Bo, Zhang Jun-an
{"title":"Research on Laval Nozzle and Overall Simulation Analysis Based on High Speed Precision Air Bearing Spindle Pneumatic Turbine System","authors":"Du Xi, Fang-Ming Zhou, L. Bo, Zhang Jun-an","doi":"10.2991/pntim-19.2019.43","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.43","url":null,"abstract":"Laval nozzles for important component in highspeed precision air-floating spindle gas drive systems, to establish a cross-sectional ratio is calculated by analysis of their simplified model of the two stages. Use of computational fluid dynamics (CFD) to simulate the Structural parameters of Laval nozzle-pneumatic turbine and analyzed the gas flow and flow rate. The simulation results show that the airflow impinges on the turbine blades and then flows out to the surroundings. The gas flow is accelerated in the Laval nozzle, reaching a maximum at the outlet, and the dynamic pressure in the Laval nozzle is high, reaching a maximum at the nozzle outlet. The simplified Laval nozzle model meets the design requirements. Then the article analyzes the problems in the model simplification and lays the foundation for the subsequent engineering experiments Keywords-Laval Nozzle; Cross Section Ratio; CFD","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"227 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":"122422075","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}
引用次数: 0
Research on Five-Axis Numerical Control Programming and Machining Technology of Micro Integral Impeller 微型整体式叶轮五轴数控编程及加工技术研究
Wang Zhijie, Cao Yan, Yao Hui
{"title":"Research on Five-Axis Numerical Control Programming and Machining Technology of Micro Integral Impeller","authors":"Wang Zhijie, Cao Yan, Yao Hui","doi":"10.2991/pntim-19.2019.32","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.32","url":null,"abstract":"Micro integral impeller is the key component of micro aero-engine, and its machining quality will directly affect the performance of micro-engine. Aiming at the narrow flow path of the tiny integral blade, the large distortion of the blade and the large ratio of free-form surface and divided into main and double blades, the five-axis NC machining method of the micro-integral impeller is studied in this paper. The research on the five-axis NC machining method of the microintegrated impeller is carried out. Firstly, according to the structural characteristics of the micro integral impeller, the NC programming is carried out in Siemens NX software, and the obtained tool path is verified by 2D dynamic simulation and 3D dynamic simulation. Finally, the micro integral impeller is obtained through the milling test. There are no interference, overcutting, undercutting and other problems in the machining process. Thus, the correctness of the machining technology and machining method is verified. Keywords-Micro Integral Impeller; NC Programming; FiveAxis Machining; Virtual Simulation","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"98 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":"123047462","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}
引用次数: 0
Design and Simulation of Adjustable Jig for Shaft Hole Parts 轴孔零件可调夹具的设计与仿真
Liu Yan, Yi Huahui, Zhang Ruijie
{"title":"Design and Simulation of Adjustable Jig for Shaft Hole Parts","authors":"Liu Yan, Yi Huahui, Zhang Ruijie","doi":"10.2991/pntim-19.2019.41","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.41","url":null,"abstract":"","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"20 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":"129491281","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}
引用次数: 0
Research on Personalized Recommendation of Magnetic Material Retrieval Based on Knowledge Mapping 基于知识图谱的磁性资料检索个性化推荐研究
Li Lei, Bai Yu
{"title":"Research on Personalized Recommendation of Magnetic Material Retrieval Based on Knowledge Mapping","authors":"Li Lei, Bai Yu","doi":"10.2991/pntim-19.2019.6","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.6","url":null,"abstract":"Since the concept of knowledge map was introduced, the internet has gradually changed from hyperlink between web pages to describing the association between entities.Knowledge map is mainly used in personalized recommendation and other fields. It can provide users with knowledge nodes and links between nodes.In order to make personalized recommendation for each user's interests and hobbies, based on magnetic material knowledge map and collaborative filtering algorithm, this paper uses python language to mine the interests and hobbies of potential customers. through mining, summarizing, sorting and indepth analysis of user data, combining the weight of time data and the weight of information similarity, this paper constructs the knowledge map architecture of magnetic material products, realizes the application of process and recommendation algorithm, and proposes the personalized recommendation system architecture of magnetic material retrieval based on knowledge map, which provides a technical scheme for the establishment of personalized learning resource recommendation system. Keywords-Magnetic Material; Knowledge Map; Personalized","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"244 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":"133684308","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}
引用次数: 0
Redistribution of DC Power in Multi-terminal Flexible DC Transmission Systems 多端柔性直流输电系统中直流功率的再分配
Li Hongke, Wang Ke, Lai Xiaowen
{"title":"Redistribution of DC Power in Multi-terminal Flexible DC Transmission Systems","authors":"Li Hongke, Wang Ke, Lai Xiaowen","doi":"10.2991/pntim-19.2019.96","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.96","url":null,"abstract":"When there are faults in AC grid, one of the concerns is power distribution as well as system stable operation while AC grid in fixed DC voltage side goes wrong. The second point of concern is power distribution of other converter stations while certain converter station fails. Moreover, based on VSC-MTDC system balance control strategy with additional active power signal, power distribution and DC voltage control which are performed when DC voltage station fails are realized through introducing additional active power signal based on adjustable active capacity margin at fixed active power converter station so that stable operation in VSC-MTDC system can be enhanced during faults. Keywords-Multi-Terminal Flexibility; DC Transmission; Power Redistribution","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"37 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":"133407606","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}
引用次数: 0
Research on Foreign Object Detection Technology in Wireless Charging System for Electric Vehicles 电动汽车无线充电系统中异物检测技术研究
Liu Changke, Shang Yaceng, Lai Hao, Sun Kaidong
{"title":"Research on Foreign Object Detection Technology in Wireless Charging System for Electric Vehicles","authors":"Liu Changke, Shang Yaceng, Lai Hao, Sun Kaidong","doi":"10.2991/pntim-19.2019.50","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.50","url":null,"abstract":"Foreign object detection is an important issue that restricts the development of wireless charging for electric vehicles. When foreign matter enters the charging area during charging, the impedance of the charging coil changes. According to this principle, the result shows that the higher the coil excitation frequency, the more obvious the coil impedance changes. In order to carry out accurate foreign object detection while charging, this paper proposes a dual-frequency inductive charging method. The high frequency is used for foreign object detection, the low frequency is used for wireless charging, the power supply topology and design method are given, and the simulation is verified. Keywords-Wireless Charging; Dual-Frequency; Foreign Object Detection","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"15 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":"122090567","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}
引用次数: 0
Research on Compensation of Solar Bracket Tracking Based on Error Model 基于误差模型的太阳能支架跟踪补偿研究
Z. Fan
{"title":"Research on Compensation of Solar Bracket Tracking Based on Error Model","authors":"Z. Fan","doi":"10.2991/pntim-19.2019.74","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.74","url":null,"abstract":"In recent years, photo voltaic industry has achieved rapid development, and the investment in large-scale photo voltaic power plants has eased the supply of electricity in more information-poor regions. There are intelligent control methods in high-power solar power systems where solar position tracking technology and plays an vital role. Based on the sun position tracking technology, the tracking error model in the sun positioning is established to analyze the error precision of the tracking algorithm, and the algorithm compensation factor is optimized to obtain the best positioning tracking effect in this paper. Moreover, the research on the compensation analysis of the photo voltaic tracking bracket error provides a guarantee for the power generation efficiency of the photo voltaic power station. Keywords-Solar Bracket; Error Model; Tracking Compensation","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"421 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":"127727433","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}
引用次数: 0
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