bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Dynamic Scheduling Arrangement of RGV in Intelligent Machining System
Authors: Zhang Qinhong 
Published: October 2019

Abstract
The intelligent machining system scheduling arrangement is through the RGV that can receive intelligent control of the system, so as to install raw materials and unload clinker for each CNC and coordinate the production of CNC in the whole system. This paper analyzes the order in which work orders are issued to RGV, comprehensively uses C++ and Matlab software to explore the scheduling scheme of intelligent machining system, combines time series and genetic algorithm to research and optimize the scheme, and continuously improves after mutation, and finally gives the optimal RGV scheduling strategy.
Investigation of residual stress relaxation on Cr12MoV steel under high-frequency cyclic loading
Authors: Wang Ping , Gu Bangping , Hu Xiong , Xu Guanhua , Lai Jintao 
Published: October 2019

Abstract
High frequency vibratory stress relief (VSR) is a procedure to reduce the residual stresses by means of high frequency cyclic dynamic stress. Cyclic loading, or cyclic dynamic stress, imposed on the workpieces during the high frequency VSR affects the reduction of the residual stresses. In this study, the high frequency VSR was carried out on the Cr12MoV steel quenched specimens. And the residual stresses on the Cr12MoV steel surface before and after the high frequency VSR were studied by the hole-drilling method. The results show that the residual stresses can be effectively reduced by the high frequency VSR. Moreover, increasing the high frequency vibration frequency and the high frequency vibration amplitude can improve the effect of the high frequency VSR.
Torsional Vibration and Bifurcation Characteristics of Automotive Main Reducer Based on Nonlinear Hybrid Model
Authors: Zou Lin , Jia Bing , Du Mingya , Lie Yujun , Xu Jinli 
Published: October 2019

Abstract
In the view of integrating dynamics of systems with dynamics of structures, the pinion shaft of automobile main reducer is divided into several torsion rod elements to establish its dynamic model, while the torsional vibration dynamic model of hypoid gears is still built with lumped mass method, thus the hybrid dynamic model of automotive main reducer is obtained by the combination of two kinds of dynamic models. Considering the nonlinear factors such as time-varying mesh stiffness, backlash and static transmission error of gear pairs, Runge-Kutta method is applied to obtain the time domain spectrum, spectrum graph, phase-plane diagram, Poincaré maps, and bifurcation diagrams of the system. The dynamic response characteristics of system with different parameters such as input rotational speed and mesh stiffness are systematically investigated by numerical simulations.
Multi-Sensor Network Cable Tunnel Monitoring System Based on GIS
Authors: Jing Zhongzhao , Li Chuyang , Ren Guangwei , Chi Yuanhong , Tian Fenglan 
Published: October 2019

Abstract
In this paper, the main factors affect the normal operation of power cables and cable tunnel are introduced. In view of these factors, a multi-sensor network cable tunnel monitoring system based on GIS. In the system, cable temperature monitoring system, tunnel environment monitoring system, tunnel security system and tunnel video monitoring system are embedded in the GIS platform, and the high voltage cable, cable tunnel environment and auxiliary facilities are monitored and controlled, which is of great significance to ensure the stable and safe operation of the cable.
A New Fatigue Analysis Method for Rotating Parts Based on Fatigue Cumulative Damage Criterion
Authors: Duan Chenghong , Han Xiangxiang , Luo Xiangpeng 
Published: October 2019

Abstract
The camshaft is one of the most important rotating parts in diesel engine. As a continuous rotating part, the high-cycle fatigue problem of camshafts has always been a hotspot in engineering. Generally speaking, nominal stress method is used to analyse high-cycle fatigue problems, but the continuous operation of camshafts determines that nominal stress method can not be used directly. Based on this, a load-discretization method based on the fatigue cumulative damage criterion and nominal stress method is proposed to solve the fatigue calculation problem of continuous rotating parts.
Research on the Relationship between Energy Consumption and Economic Growth in Jilin Province Based on Error Correction Model
Authors: Huang Yimiao , Qu Yongjun , Chen Yanyu 
Published: October 2019

Abstract
Under the call of the green economy, the analysis of the relationship between energy consumption and economic growth can cater to the current policy agenda to achieve a resource-saving and environment-friendly society. Based on this, the thesis applies the error correction theory model to apply the variable stability, causality and cointegration test to the relationship between energy consumption and economic growth in Jilin Province, and obtains energy consumption and economic growth in Jilin Province in the past ten years. The cointegration relationship and causality between the two countries show that urban economic growth can drive energy consumption, and the economic development of Jilin Province is not entirely dependent on energy consumption, but has a two-way causal relationship with the four variables. To this end, in the future industrial development and economic promotion, it is necessary to accelerate the development and promotion of low-energy, high-efficiency industries, promote the diversified development of the energy structure, actively play the role of government agencies in policy regulation, and increase investment in technological innovation. And adopting taxes or funds to promote industrial capital to reform in a technology-intensive manner.
Research on rolling fatigue testing for manhole covers
Authors: Su Zhonghua , Yu Xiang , Yang Zhangcheng , Nie Hongbin , Ou Jian 
Published: October 2019

Abstract
Some manhole cover accidents have been listed. The direct cause and root cause of manhole cover accident have been analyzed. Anti-rolling fatigue testing for manhole covers has been put forward and studied. Test parameters and decision methods have been determined.An equipment for manhole covers anti-rolling fatigue testing, which including equipment structure, equipment parameters, manhole cover installation structure and equipment operation, has been studied and designed.
Microstructure of resistance spot weld ultra high strength steel Q&P980
Authors: Liu Tao , Wang Hua , Yang Haifeng , Ke Chongjian , Zhou Li , Zhao Hongyun 
Published: October 2019

Abstract
1mm thick Q&P980 steel plate was resistance spot welded and the appearance and microstructure of welded joint were investigated. The results show that Q&P980 steel achieves a better connection, When welding current is 12.5 kA, welding time is 10cycle, and electrode pressure is 2.4 kN. The joint can be divided into Fusion Zone (FZ), Coarse Grained (CG) HAZ, Fine Grained (FG) HAZ, and Inter Critical (IC) HAZ, Base Material (BM). The FZ undergoes recrystallization, and the HAZ undergoes a phase change due to thermal cycling and plastic deformation. FZ, CGHAZ and FGHAZ are completely austenitized and lath martensite is formed. ICHAZ generates tempered martensite.
Contact fatigue analysis of gear transmission system of drive axle final drive of truck
Authors: Wang Zhiqi , Liu Wenzhi , Liu Qingchao , Tao Jian , Wang Tianxiang , Chen Ye 
Published: October 2019

Abstract
The function of the final drive of a truck axle is to reduce the speed and increase the torque. The main transmission system is composed of a spiral bevel gear mechanism and a helical gear mechanism. After fully considering powertrain mass, moment of inertia and dedendum transition fillet, the dynamic calculation model of the meshing collision of the gear teeth was established. The speed of the gear and the contact force of the tooth surface in a moving cycle are calculated and analysed. Based on the results of the dynamic calculation as the load data, the finite element computation model of frictional contact between spiral bevel gear mechanism and helical gear mechanism is established. Using the augmented Lagrange multiplier method, the contact stress distribution of the tooth surface under the transient impact load is calculated and analysis in a motion cycle when the teeth are engagement-in and engagement-out. In order to avoid the damage of gear tooth contact fatigue, the more realistic surface contact fatigue strength of the gears was obtained and compared with the theoretical calculation according to the finite element calculation results.
Point Cloud Registration Method for Pipeline Workpieces Based on PCA and Improved ICP Algorithms
Authors: Xue Shan , Zhang Zhen , Lv Qiongying , Meng Xianyu , Tu Xin 
Published: October 2019

Abstract
Aiming at the registration problem of point cloud data obtained by laser scanning workpiece, a new automatic registration algorithm of point cloud based on PCA algorithm and improved ICP algorithm is proposed. Firstly, the feature points are selected according to the change rule of normal vectors in the original point cloud data, and the initial matching point set is obtained by establishing the histogram of feature points (FPFH); then the principal component analysis (PCA) is used to match the initial data; Finally using the k-d tree to accelerate the improved iterative method is closest point (ICP) precise matching, and using quaternion method of registration parameters are obtained. Experiments are carried out on the proposed new algorithm and PCA+ICP algorithm, and the experimental results are compared. The results show that the new algorithm can achieve registration, and improve the speed and accuracy of registration, which provide a reference for similar problems.
Point Cloud Registration Method for Pipeline Workpieces Based on RANSAC and Improved ICP Algorithms
Authors: Xue Shan , Zhang Zhen , Meng Xianyu , Lv Qiongying , Tu Xin 
Published: October 2019

Abstract
Aiming at the registration problem of laser-scanned workpiece point cloud data, a point cloud registration method based on RANSAC algorithm and improved ICP algorithm is proposed. Firstly, feature points are selected according to the variation law of the normal vector in the original point cloud data, and the initial matching point set is obtained by establishing the histogram (FPFH) of feature points. Then a random sampling consensus (RANSAC) algorithm is applied to the initial data matching. At last, the nearest point iterative algorithm (ICP) accelerated by k-d tree is used for accurate matching, and the quaternion method is used to obtain the registration parameters. The new algorithm and PCA+ICP algorithm are tested and the experimental results are compared. The results show that the new algorithm can achieve registration, and improve the speed and accuracy of registration, which provide a reference for similar problems.
Welding Groove Detection Based on Hough Transform and Gray-Level Co-Occurrence Matrix
Authors: Li Changwu , Xia Huiwen 
Published: October 2019

Abstract
With the development of the intelligent robot industry and the increasing labor costs of production, the demand for the quality identification of welding products using robots is increasing. Position identification and shape judgment of the welding groove are important conditions for measuring welding precision and welding quality. Based on a variety of welding groove images, the mathematical model of groove size and texture is constructed. Hough transform and gray-level co-occurrence matrix are used to identify and extract the welding groove position and shape characteristics in order to judge the quality of welding products. According to the identification and extraction of welding groove position and topography, through the simulation of the welding groove location and terrain identification and extraction of the model were analyzed from various angles and the accuracy of the algorithm.
Binary Fuzz Testing Method Based on LSTM
Authors: Yuan Xiaoxiao , Pan Limin , Luo Senlin 
Published: October 2019

Abstract
Fuzzing is an effective software testing technique to find bugs. In the binary fuzzing, the attempt of generating test data mainly focuses on the improvement of the mutation algorithm, which lacks further screening of the test data. This paper proposes a binary fuzz testing method based on long short-term memory. This method record the executed path information by QEMU. Then we assign values to different code branches according to the frequency of executed path. The path weights can be calculated. The LSTM model will be trained by test data and the path weights. Finally, we can take the test data as input and filter the data by referring to the path weights. This method can improve the time efficiency of fuzz testing. Experiments on a variety of different types of binary programs show that compared to the state-of-the-art fuzzer American fuzzy lop, this method achieves higher code coverage and time efficiency in the same time.
Research on Link Prediction Based on Similarity Index Algorithm
Authors: Xu Zhaodi 
Published: October 2019

Abstract
For social network with no rights and no directions, link prediction has lower computational complexity and higher link prediction accuracy by using similarity metrics. The existing local information-based similarity metrics are mostly calculated by the common neighbors of the pair of nodes to be predicted when performing link prediction, but these methods do not consider the influence of the relationship between the common neighbors. Aiming at this problem, this paper proposes a new link prediction algorithm based on the existing local information-based similarity measurement method, which not only considers the number and degree of common neighbors between the pairs of nodes to be predicted, but also considers the relationship between common neighbors. In order to verify the effectiveness of the algorithm, the proposed algorithm is compared with the original algorithm and other methods based on the similarity measure of local information in this paper. The experimental results demonstrate the effectiveness of the algorithm.
Power-split transmission performance research with the method of lever analogy
Authors: Zou Naiwei , Han Ping , Wu Wangjiang , Lu Jinlong , Wang Songlin 
Published: October 2019

Abstract
Power-split transmission system was very complex in structure; the continuously variable transmitting performance of this system is difficult to analysis, which impeded the further research of this kind of transmission. In this research, universal series mathematical models of power-split transmission system were set up firstly. Then, the lever analogy analysis method was introduced into the power-split transmission performance analysis process, and the multi-range continuously variable transmitting performance of power-split transmission was described comprehensive. Finally, the method was used to analysis one real power-split transmission systems, ZF Friedrichshafen power, and the accuracy, validity and convenience of this method were verified. The result show that the method of mathematical model combine with lever analogy could analysis the power-split transmission system continuously variable transmitting performance more correctly, easily and rapidly, it could provide a more intuitive and efficiently analysis method for the further research of power-split transmission system.
Optimization of metal belt continuously variable transmission pulley based on multi-island genetic algorithm
Authors: Cheng Jianfei , Li Hangyang , Fu Bing , Zhang Feitie , Zhou Yunshan 
Published: October 2019

Abstract
The efficiency of metal belt CVT is an important index to evaluate its transmission performance, and the greater the axial deformation of the pulley, the greater the efficiency loss. In this paper, the deformation of pulley under different passive pressures is measured by experiment, and the reliability of the optimized 3D CAD model is verified by comparing with the data of the simulation model. And based on multi Island genetic algorithm (MIGA), using ISIGHT to integrate CATIA and ABAQUS, and the maximum stress is used as the constraint condition, penalty function integrate pulley deformation, mass and moment of inertia of the smallest to construct single objective function to optimize a CAD model, finally the test sample analysis verify the reliability of the optimization results. Research results show that, the optimized pulley mass was reduced by 16.96% and the inertia was reduced by 11.7%. Comparing the axial deformation of different speed ratios of the pulley, the deformation is smaller than that before the optimization, laid the foundation for the study of pulley transmission efficiency.
Labyrinth structure sealing performance on grounding device of railway passenger vehicles
Authors: Li Gang , Lin Xiangli , Liu Yingying , Li Lun , Liu Qingshan , Guo Jishun , Zhao Zilian 
Published: October 2019

Abstract
In this paper, the function of isolating carbon powder and water in the labyrinth structure on Grounding Device of Railway Passenger Vehicles is studied. The possibility of carbon powder and water entering the bearing through the labyrinth structure under the condition of seal failure of the grounding device is analyzed.
Design and application of carbon fiber composite material in end box of rail transit vehicles
Authors: Liu Yingying , Lin Xiangli , Li Zuoxin , Dai Pingren , Zan Haibin , Cai Daotao , Du Chenglong 
Published: October 2019

Abstract
Carbon fiber composites have great application prospects in the field of rail transit. In order to study the application of carbon fiber composite materials in rail car end boxes. Firstly, the carbon fiber paving structure was designed, and then the product performance of carbon fiber car end box was studied by finite element analysis calculation and sample test verification method. The research results show that the weight of the car end box of carbon fiber composite is about 45% of the weight of carbon steel and stainless steel box, about 72% of the weight of aluminum alloy box, and the weight reduction effect is remarkable. The static strength and fatigue life of the box are the test results of insulation withstand voltage and protection grade all meet the standard requirements and have passed the test verification. The carbon fiber composite car end box can be used and promoted on rail transit.
Construction of the Remote Welding System based on Power Line Communication
Authors: Yin Ziqiang , Zhang Hongtao , Liu Wei , Wang Hougao , Yin Cong 
Published: October 2019

Abstract
Remote welding technology plays an important role in the construction of national key projects. Instead of manual welding and full-autonomous welding, it is the best way to apply remote welding technology to practical engineering by employing a special robot. This study uses the remote welding power supply cables as the carrier to construct the power line communication network. The key technical problems of the power line communication for complicated electromagnetic environment are proposed in this paper. On this basis, the welding parameters and the environment parameters are transferred to the local control unit, by the power line communication network. The influence rule on weld formation, microstructure, mechanical properties, and welding defects can be revealed by analyzing the above factors. This study explores a feasible way for the robot remote welding by the way of integration innovation. It will lay a foundation for the application of the robot remote welding technology in the construction of national key engineering.
The Research on Minimum System Construction Management Based on Water Temperature Detector
Authors: Huang Yuan , Li Mingze , Wu Fujun 
Published: October 2019

Abstract
The operation of the system greatly affects our work efficiency. We need to improve our system construction management. Therefore, we will use the eight-way detection method to study how to manage the minimum system with the water temperature detector. The research results show that the design and construction of the minimum system has passed the temperature detection of DS18B20 in eight, the system is stable, and the effect of the minimum system of process management is achieved.
Mutual Inductance Measurement and Analysis of Near-Field Magnetic Coupling
Authors: Lee Chin-Hsiung , Hu Qinjun 
Published: October 2019

Abstract
Magnetic element is an important component of power converter. It includes inductors, common mode inductors and transformers. Configuration and wiring of their components will affect the ability to suppress electromagnetic interference noise. Due to the miniaturization and increasingly higher power density, the composition of the power converters become more and more compact, which leads to the near field coupling effects among the components. In this study, the mechanism of near-field magnetic coupling between magnetic elements is analyzed, and the accuracy of the parameters of near-field magnetic coupling is further verified the simulation through experiments.
Evaluating Comprehensive Development Quality of a Regional Power Grid by Using an Integrated Multi-criteria Decision-Making Methodology
Authors: Zhang Xiaodong , Qin Kaiming , Si Ruihua , Ge Xianjun 
Published: October 2019

Abstract
Due to the economic situation changes and the continuous expansion of new energy power in China, a new evaluation methodology based on multi-criteria decision making (MCDM) should be proposed to promote the comprehensive development of the new regional power grid. Some criteria were selected to constitute an indicator system from the perspectives of the safety reliability, network structure and economic benefit. Then, an integrated evaluation model was proposed based on fuzzy AHP method and VIKOR method was applied to calculate a series of comprehensive evaluation indexes. A regional power grid was chosen as an empirical analysis to demonstrate the feasibility of the evaluation system.
Impact of wind power grid connection and interline short circuit faults on power grid
Authors: Luo Jiasong , Xu Tong , Wang Xinlei , Zhang Chao , Li Nan 
Published: October 2019

Abstract
With the gradual increase of electricity demand in China, wind power and other power generation has developed rapidly, which makes the structure of power grid more complex. The complex structure increases the risk of short-circuit fault of power grid. The rapid development of wind power intensifies the randomness of power grid operation. This paper uses MATLAB/Simulink to model power system, construct simulation, and analyse the influence of grid-connected wind power and short-circuit faults on grid stability. The results show that the fluctuation and impact of the active power on the user side are significantly weakened compared with those of the single wind power grid when the high-power stable power supply is connected to the wind power grid. The single-phase short-circuit fault has no disturbance to the user of the grid, and the two-phase short-circuit and three-phase short-circuit have greater impact on the voltage, current and speed of the user end.