2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)最新文献_第5页

Study on heat generation and dissipation characteristics of connecting rod small-end bearing in diesel engine 柴油机连杆小端轴承热生成与散热特性研究

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00054

Jiaming Guo, J. Xiang, Hongwei Chen

{"title":"Study on heat generation and dissipation characteristics of connecting rod small-end bearing in diesel engine","authors":"Jiaming Guo, J. Xiang, Hongwei Chen","doi":"10.1109/WCEEA56458.2022.00054","DOIUrl":"https://doi.org/10.1109/WCEEA56458.2022.00054","url":null,"abstract":"Based on thermal-elastohydrodynamic lubrication and micro-convex peak contact theory, the calculation model of thermal-elastic fluid for connecting rod small-end bearing was established. The lubrication and friction characteristics of the small-end bearing were analyzed. The heat generation and dissipation mechanism and heat distribution rule of small-end bearing were obtained. The effect of cylinder pressure, rotation speed and roughness of small-end bearing surface on heat generation and heat transfer was discussed. The results show that the connecting rod small-end bearing is mostly in the state of mixed lubrication during the movement, and the heat is generated mainly through the friction on the bearing surface; the bearing mainly dissipates heat by means of heat conduction through small-end and piston pin. Piston pin and bushing accounted for 99.8% of heat dissipation, while the heat dissipation through lubricating oil out of bearing is relatively small. Cylinder pressure, rotation speed and roughness have great influence on the heat generation of the bearing. The increase of cylinder pressure will cause the total friction power loss of bearing increases. With the increase of rotation speed, the total friction power loss always increases after reduces. The increase of roughness also increases the friction power loss of bearing. The change of total friction power loss of the bearing mainly ranges from crankshaft angle 270°CA to 630°CA. Cylinder pressure, rotation speed and roughness have little influence on heat distribution rule of bearing. The increase of cylinder pressure and rotation speed is beneficial to the heat dissipation of lubricating oil, while the increase of roughness is not conducive to the heat dissipation of lubricating oil.","PeriodicalId":143024,"journal":{"name":"2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126882491","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

The Hover Anti-Wind Parallel Algorithm Running in Airborne Computer Which on Rotorcraft Drone 在旋翼无人机机载计算机上运行的悬停抗风并行算法

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00066

Zan Yang, Jiabin Chen, Weicheng Wang, Lifang Shi

{"title":"The Hover Anti-Wind Parallel Algorithm Running in Airborne Computer Which on Rotorcraft Drone","authors":"Zan Yang, Jiabin Chen, Weicheng Wang, Lifang Shi","doi":"10.1109/WCEEA56458.2022.00066","DOIUrl":"https://doi.org/10.1109/WCEEA56458.2022.00066","url":null,"abstract":"Research and implementation of a parallel algorithm that simultaneously executes other business tasks while high-precision fixed-point hovering indoors and outdoors, which run in the multi-core airborne pilot computer on rotorcraft UA V, and supported by GNSS-RTK or UWB and other positioning technologies. It is mainly used for the situation that business tasks have higher requirements for the positioning point, in this case, if the strong air flow affects the positioning effect, and the flight controller itself cannot correct the position in time, it will affect the business task execution effect or even make the task unable to perform correctly. The algorithm was tested several times in the actual project scenario, and compared with the situation that the algorithm was not used, the average completion rate of business tasks increased from about 84 % to more than 98%, exceeding the lower design limit requirements of this project (96.4%), and in the case of sufficient computing power of the airborne computer, it did not have a significant impact on the original execution rate of the service. The code implemented according to this algorithm currently runs on the multi-core computing equipment outside the flight controller, and does not affect the flight controller to control the attitude of UA V. After large number of actual measurements, no accident such as crashes and collisions caused by this algorithm, its safety is assured.","PeriodicalId":143024,"journal":{"name":"2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131162097","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

Improvement in the Design of Separating Roller for PROTOS 90 Cigarette Making & Packaging Machine Based on the TRIZ Theory 基于TRIZ理论的PROTOS 90制烟包装机分离辊设计改进

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00040

Peigang Xu, Jing Zeng, Gang He, Tingting Xie, Lin Yu, Lei Xu

引用次数: 0

High voltage isolating switch testing bench for “HeXie” electric locomotives “和谐”型电力机车高压隔离开关试验台

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00021

Jun Liu, Rui Zhao

引用次数: 0

A Study on the Hybrid System of Intelligent Lithium Iron Phosphate Battery Based on Economic Communication Power Model 基于经济通信功率模型的智能磷酸铁锂电池混合系统研究

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00011

Tan-En Wang, Hao Wang, Gang Wu, Bolong Chen, Xuyi Liang

{"title":"A Study on the Hybrid System of Intelligent Lithium Iron Phosphate Battery Based on Economic Communication Power Model","authors":"Tan-En Wang, Hao Wang, Gang Wu, Bolong Chen, Xuyi Liang","doi":"10.1109/WCEEA56458.2022.00011","DOIUrl":"https://doi.org/10.1109/WCEEA56458.2022.00011","url":null,"abstract":"Aiming at the problem of high replacement and maintenance cost of communication power battery, this paper studies the intelligent lithium iron phosphate battery hybrid system. The economic requirements of communication power supply are fully considered. For the problems of battery aging and insufficient charge and discharge in the use of communication power supply batteries, the battery management system of lead-acid battery and lithium iron phosphate battery is studied. Through system optimization and software and hardware design, the service life of the battery can be effectively increased by about 33%. The test results show that the hybrid system can effectively improve the service efficiency of the battery, make its charge and discharge more fully, and avoid the aging problem caused by system isolation. The experiments of voltage test, state of charge estimation and equalization test show that the system has good effect. In terms of economy, the intelligent lithium iron phosphate battery hybrid system can effectively save about 43.3 % of the construction cost of the network base station, which has a good application prospect.","PeriodicalId":143024,"journal":{"name":"2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130651520","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

Organizing Committee: WCEEA 2022 组委会:WCEEA 2022

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/wceea56458.2022.00007

引用次数: 0

Evaluation method of harmonic emission level under the influence of multivariate nonlinear customer interaction 多元非线性顾客交互影响下的谐波发射水平评价方法

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00059

Ling Pan, Yingjie Tian, Qian Feng, Xiaofeng Zou

{"title":"Evaluation method of harmonic emission level under the influence of multivariate nonlinear customer interaction","authors":"Ling Pan, Yingjie Tian, Qian Feng, Xiaofeng Zou","doi":"10.1109/WCEEA56458.2022.00059","DOIUrl":"https://doi.org/10.1109/WCEEA56458.2022.00059","url":null,"abstract":"Under the background of high power electronic rate in city grid, power system presents the characteristics of multiple nonlinear customers interaction, which aggravates the harmonic pollution. Besides, the fluctuation of background harmonics becomes more severe, and certain correlations exist among the harmonic emission properties of different harmonic sources. As a result, there will be new challenges in the quantification of harmonic responsibility. In this paper, a sparse component analysis-based method is proposed to solve this problem. Through sparse transformation of the source signals, the measured harmonic voltage and current signals will be clustered linearly. The slope of the clustering line can be used to calculate the harmonic impedance, and then the harmonic responsibility can be quantified. The proposed method can ensure a high calculation accuracy even when background harmonics fluctuate greatly and each harmonic source is no longer independent. The feasibility of the proposed method is verified by simulation analysis.","PeriodicalId":143024,"journal":{"name":"2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131441060","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

A Technique of Topology Obfuscation Against Active Topology Inference 一种对抗主动拓扑推理的拓扑混淆技术

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00053

Zhicheng Zhu, Rongbao Kang, Wei Zhang, Kun Lan, Yuguang Zhang

引用次数: 0

A Study on the Fabrication Process of UNS S32760 Super Duplex Seamless Steel Tubes S32760超级双相无缝钢管制备工艺研究

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00049

Xuhuai Chen, Shengda Cong, Qi Shao, Hongjun Shi, Guoqiang Wu

引用次数: 0

Research on the Optimization Method of Power Network Maintenance Plan Based on Equipment Importance 基于设备重要性的电网维护计划优化方法研究

2022 International Conference on Wireless Communications, Electrical Engineering and Automation (WCEEA) Pub Date : 2022-10-01 DOI: 10.1109/WCEEA56458.2022.00033

Fang Yuan, Dong Li, Wencui Li, Xiao Feng, Yao Zhao

引用次数: 0