bluuebunny/crossref_metadata_2025_split huggingface dataset:
3D Simulation of acoustic waves propagating through porous domain using PUFEM tetrahedral elements
Authors: Yang Mingming , Breard Cyrille , Cen Yipeng , Chazot Jean-Daniel 
Published: August 2020

Abstract
Partition of Unity Finite Element Method is one of the new deterministic prediction techniques developed for tackling medium and high frequency wave problems, because it has the overwhelming advantage over traditional Finite Element Method due to its high efficiency and low computational cost properties. In this paper, PUFEM is further developed to simulate the 3D sound pressure field where porous material is included and modeled as an equivalent homogeneous fluid. Lagrange multipliers are applied at the air and porous material interface. The performance and efficiency of the established numerical model using 3D PUFEM elements are analyzed, it is shown that PUFEM technique can effectively reduce the computational burden while still maintaining the sufficient accuracy for the simulation results of 3D acoustic problems.
A Fault Diagnosis Model Based On Full Vector Spectrum And Feature Engineering
Authors: Cui Huanting , Chen Hong , Xiao Sa 
Published: August 2020

Abstract
Aiming at the problem of how to quickly and accurately diagnose different types of rotating machinery faults, this paper starts with the combination of full-vector spectrum theory and feature engineering. A model of rotor imbalance faults diagnosis and identifying is constructed in the process of dealing with the data sets of multiple rotor imbalance fault. The result shows that this fault diagnosis model combined with the full vector spectrum theory and feature engineering can be used to correctly distinguish the faults of the equipment and accurately identify the types of the unbalanced faults.
Research on New Automotive Electronic Hydraulic Brake System
Authors: Chen Liang , Chi Hua , Feng Yue , Zhang ChuanMin 
Published: August 2020

Abstract
The new structure of EHB replaces part of the mechanical transmission by electronic control, brake pedal is not connected with brake wheel cylinder directly. While braking, ECU collect the sensor signal of brake pedal as the driver’s intention. It solves the problems caused by traditional hydraulic braking system, and also makes up for deficiencies caused by the traditional braking system design and principle. The EHB system can make brake control gets the maximum control margin, which can improve the efficiency and braking safety.
Target Detection and Correction of Micro-motor Rotor Based on HALCON
Authors: jian Wang , lai Wei , xiao-ning Chen 
Published: August 2020

Abstract
In order to realize the high-speed and accurate inspection and correction of the micro-motor rotor during its soldering process, an identification and measurement system based on HALCON was designed. It realizes such functions as collecting, identifying and filtering images, analyzing target deviations and correcting them. Firstly, the industrial camera is used to obtain the target image. Then the image is preprocessed, after NCC template matching, ROI extraction and feature segmentation, the accurate target features are obtained. Finally, the center coordinates of the feature area are obtained to calculate the feature position deviation, and then the upper computer controls device to correct the deviation. The results show that the system can replace the manual detection to complete features recognition and correction of the target rotor and it also improves its efficiency and accuracy of the recognition and correction, providing a new method for the recognition and correction of motors in actual production.
Control Method Based On Long Time-delay System
Authors: Huang Ling , Tang Rui , Xia Pei , Tan Cheng 
Published: August 2020

Abstract
In today’s industrial control field, the control system often has long time-delay property, which makes the sensor unable to acquire real-time information and the control system difficult to control. A control method is proposed here, on the one hand, which uses Fuzzy-PID control to adjust control parameters in real time, improves control accuracy and strengthen the robustness of the control system; On the other hand, this method uses particle swarm algorithm to calculate the optimal fuzzy control parameters to make the system in the optimal control state, and at the same time, uses Smith algorithm to overcome the system delay. Finally, through the simulation, This control strategy has higher precision than traditional PID control, and has a shorter reflection time, which achieves precise control of systems for long time-delay system.
Research on Error Analysis and Online Recognition Method of Contour in 3D Printing
Authors: Lianghua Zeng 
Published: August 2020

Abstract
The accuracy of 3D printing is related to the software and hardware structure, such as modeling software, slicing software and the kinematic characteristics of nozzle components. In order to explore methods to improve printing accuracy, this paper conducts research based on fused deposition modeling (FDM). On the basis of the experiments, the constituent elements of the cross-sectional profile and the mechanism of its error are analyzed, and the insight software is used to verify. Finally, based on the idea of digital twins, this paper initially explores the online recognition method of contour.
The remote control research based on the Android platform
Authors: Meihui Xu , Yaqi Wang , Xiye Feng , Ling Zhang , Longxi Xu , Guixian Shi 
Published: August 2020

Abstract
With the rapid development of mobile terminals and wireless networks, the relationships between computers and mobile phones are more and more closely. Now, the mobile phones and computer become indispensable to modern society in the daily life. The information transmission and exchange between them has become increasingly frequent. The purpose of this research is to find a safe way of connection with low cost, low power consumption, convenient and flexible, so that we can finish the information exchange quickly and accurately between mobile phone and computer. Because of using a socket connection mode, the physical line media is not needed.
A Monitoring and Reseeding Device for Potato Sower
Authors: Shufeng Liu , Zhaoqin Lv , Guangling Zhang , Hanxiang Wang 
Published: August 2020

Abstract
To solve the problem of artificial detection and replanting in a potato planter, we provide laser sensor-based seeding detection method. In addition, this paper adopts a method for the detection of seeding by designing a monitoring and reseeding device for a potato sower. We also test the performance of the seeding detection and the automatic filling performance of the device. The device adopts the two pairs of laser correlation sensor and contact-travel switch sensor to detect the leak air scoop seeding location. To achieve precise seeding, the proposed device relies on the step motor to drive the seeding device. The experimental result shows that when the working speed is 2–5 km/h, the original average seeding rate of the seeding machine is 91.35%, the average successful replanting rate of the replanting device is 82.17%, and the comprehensive seeding rate is less than 1.5%. In addition, the total seeding rate is 98.5%. The seeding rate and the seepage rate obviously decreased when the line speed is less than 0.5 m/s. The method for seeding detection proved to be accurate, and the effect of the automatic seeding device is highly apparent. The method not only adapts to different sowing speeds and potato sizes, but also provides a theoretical basis for the intelligent design of a potato planter.
Application of Fuzzy Analytic Hierarchy Process in Intelligent Manufacturing Resources Allocation Evaluation System of Alliance Enterprises
Authors: Wang Yunxia , Li Guangrong , Chen Jian , Zhang Zihao 
Published: August 2020

Abstract
With the increasing global competition, more and more enterprises form the industrial alliance. In order to solve the problem of resource allocation and scheduling optimization of industrial alliance enterprises in intelligent manufacturing environment, an efficient resource allocation method and evaluation index of industrial alliance service platform are established. A set of systematic intelligent manufacturing resources evaluation scheme is established by using FAHP, which can be used to evaluate and analyze several manufacturing resources conveniently. According to different needs of customers, the weight assignment is also changing, and the most suitable manufacturing resources can be obtained.
Research on Evaluation System of Alliance Enterprises in Intelligent Manufacturing Environment Based on BP Neural Network
Authors: Xiao Guiping , Wang Yunxia , Ni Ping , Chen Di , Zhang Zihao 
Published: August 2020

Abstract
In an intelligent manufacturing environment, fierce global market competition has made more and more companies form industrial alliances to gain an advantage. The basic goal of enterprise alliance is achieving high efficiency and a win-win situation. This paper mainly studies the necessity of partner selection, determines the principle of partner selection, and establishes an evaluation index system for dynamic alliance enterprise cooperation. At the same time, multi-attribute decision analysis and BP neural network are used to identify the ultimate partner. Finally, an example is analyzed with MATLAB to verify its feasibility.
Serial and parallel reliability models for robot arm reliability analysis
Authors: Li Songhao , Xu Chen , Wang Yawen , Xie Liyang 
Published: August 2020

Abstract
For reliability evaluation of a robot arm designed for tunnel boring machine, a serial system reliability model for arm strength and a summation (cumulative deformation) system reliability model for the fingers of the robot arm are developed. To reflect the effect of load uncertainty, total probability theorem is applied to develop mult-layer, multi-variate reliability models. With the total probability theorem and the multi-layer configuration of the reliability models, such models reflect the effect of load intensity uncertainty, load action number uncertainty, load peak distribution uncertainty, and component strength uncertainty hierarchically.
Design of AGV Automatic Navigation System Based on Baidu Static Map
Authors: Jiang Ling-yun 
Published: August 2020

Abstract
In order to solve the problem of “the last kilometer” of heavy load logistics, an AGV automatic navigation system based on Baidu static map for path planning was developed. The upper computer program was designed to collect Baidu static map images as the base map of the electronic map. Path planning was conducted on the base map to generate trajectory data in byte form, which was sent to the data register area of PLC through Modbus RTU protocol. According to the data transmitted by the upper computer and sensor fusion technology, the PLC program realizes AGV positioning and automatic cruise. Replacing hardware with software to expand AGV functions is a low-cost and highly reliable alternative to current unmanned driving technology, which has certain innovation and practicability.
Research on jet impingement cooling based on serial wedge-shaped wettability patterned surface
Authors: Zhang Heng , Liu Ziai , Song Jinlong 
Published: August 2020

Abstract
Jet impingement cooling technology has been widely used in many engineering fields. However, the flow direction of the water jet on uniform surface at high temperature is uncertain, thus the cooling efficiency using this technology is limited. Here, a serial wedge-shaped wettability patterned surface is fabricated on the aluminum sample to guide the water flow direction. During the water transportation on the patterned surface, the Laplace force is the main driving force. In this study, the cooling characteristics of water jet with different flow rates and initial temperatures are studied by the temperature data obtained according to thermocouples and multiplex temperature meter. Results show that both the center and edge positions of the sample possess excellent cooling efficiency. Additionally, we find that a better cooling effect can be observed when a larger flow rate of water jet was injected on the surface with a higher initial temperature.
Experimental study on cutting speed and surface roughness of pure copper in WEDM
Authors: Li W M 
Published: August 2020

Abstract
Wire electrical discharge machining (WEDM) is an important way to manufacture copper electrode. In order to quickly manufacture copper electrode with good surface quality, the influence of electrical parameters on cutting speed and surface roughness of pure copper in wire electrical discharge machining was investigated. An analytical method was proposed to analyze the influence law from the aspects including discharge energy, the formation of adhesive substance on cutting surface and the discharge of electric erosion products. The results show that the pulse width has the greatest influence on the surface roughness and the peak current has the greatest influence on the cutting speed. Using the proposed analytical method, the influence relationship between the electrical parameters and the process objectives could be accurately analyzed, and then the actual production could be guided to select the appropriate electrical parameters according to the optimal process objectives pursued.
Study on testing vehicle’s driving wheel output power
Authors: Wang Fan 
Published: August 2020

Abstract
This paper describes the principle, test methods and test procedures of vehicle wheel power based on the chassis dynamometer, as well as analyzes the test methods and factors that affected the test results of the driving wheel rolling resistance. At the same time, through the analysis of the test data of several groups of real vehicles, some attempts have been made to explore practical and feasible methods for automobile power performance test under the current conditions in our country. The relevant conclusions can provide a reference for improving the level of automobile power performance test.
Mechanical scribing test analysis of lateral ridges law on aluminum
Authors: Ji Lu , Wang Xin , Shan Yan , Bai Xiaotao 
Published: August 2020

Abstract
In order to study the rule of lateral uplift of pure aluminum (purity is 99.999%) during mechanical scribing, based on the mechanical scribing test device, the tool tip angles are 80 °, 85 °, 90 °, 95 °, 100 ° The diamond cone cutter is used to perform mechanical scoring test on pure aluminum with a depth range of 5μm-25μm. Through the bump height detection analysis, lateral ridge height and groove depth - mathematical statistical relationship knife sharp corners, through the known parameters such as groove depth, groove on the bump height is pre-sentence, thereby pre-Groove play an important role in the control.
A local-optimizing surface reconstruction method based on point cloud data
Authors: Ma Jianwei , Liu Zhao , Li Jiawei , Du Wenhao , Qu Ziwen , Li Guanlin 
Published: August 2020

Abstract
Surface reconstruction based on discrete point cloud data is a frequently encountered problem in the field of CAD/CAGD and computer graphics. In this paper, a local-optimizing surface reconstruction method based on discrete point cloud data is proposed. Firstly, the moving least square method is used to fit the discrete point cloud data to generate a gridded point clouds. Then the global interpolation method is used to generate the initial NURBS surface based on the gridded point clouds. Additionally, the knots are inserted into the regions with excessive errors. Ultimately, a multi-objective optimization function is established to optimize the regions with excessive errors and their neighbourhoods simultaneously. Compared with the existing methods, the proposed method can improve the fitting accuracy of the reconstructed surface locally and has higher efficiency.
Analysis of Vibration Fatigue of A Subway Shunting Train
Authors: Fan Weipeng , Li Ronghua , Zhang Xiujuan , Tian Maopeng , Zhao Deyu 
Published: August 2020

Abstract
In order to research the fatigue life of a subway shunting train, the power spectrum density (PSD) is used to calculate the vibration fatigue based on frequency domain analysis. Through pre-stressed modal analysis in finite element simulation, the natural frequency and vibration mode are obtained. Then harmonic response is used to get the frequency response function (FRF) based on the modal superposition method. Then the solution is imported into Ncode Designlife. After using the Lalanne method to process PSD curve and the Goodman method to correct the mean stress of the estimated S-N curve, the vibration fatigue damage of the shunting train is obtained, so as to evaluate its vibration fatigue. The result will provide a certain theoretical basis for the fatigue study of shunting train.
Optimization analysis of parallel reed damper for optical sight
Authors: Guobiao Fei , Xingmei Cheng , Fenggang Liu 
Published: August 2020

Abstract
The parallel reed damper is very important for the optical sight to bear high-intensity impact, and its damping effect directly affects the firing accuracy of the weapon system. In this paper, based on the response surface methodology, the parametric modeling and finite element analysis of the parallel reed damper of the optical sight are carried out in the ANSYS Workbench. The response surface curve of the maximum displacement response to the structural parameters is obtained, and the influence rule of the structural parameters on the maximum displacement response is analyzed. The results show that the sensitive parameters of the parallel reed damper are the width of the reed, the height of the reed hollow layer, the thickness of the reed and the symmetrical distance of the reed. The results of the optimization analysis can be used to guide the structural design of the parallel reed damper of the optical sight and provide a favorable guarantee for improving the shooting accuracy of light weapons.
Effect of Connecting Link Deformation on Stability of Balance Hoist Based on Multi-body Dynamic
Authors: Hao Jie , Zhang Xuewei , Liu Yu , Sha Zhihua , Zhang Shengfang 
Published: August 2020

Abstract
Aiming at the instability problem of balance hoist in the loading process, this paper is to establish a dynamic simulation model of balance hoist by using ADAMS. Based on rigid-flexible coupling dynamics, flexible connecting link was modeled as Euler–Bernoulli beams. The stability and dynamic characteristics of two extreme working states were analyzed. The results showed that the vibration and elastic deformation of connecting link after loading have a great influence on the constraint force of each hinge and out-of-balance force, and caused slippage and instability of balance hoist, especially when the lifting weight of the balance hoist moved to the region around workspace. It can reduce the out-of-balance force and improve the stability of balance hoist to increase the stiffness of the connecting link properly, which will provide a better reference for the structure optimization and operational performance of balance hoist.
Development and Experiment Research on Multi-function Wire Rope for Manned Rescue Lifting Equipment
Authors: Qingxiu Liu 
Published: August 2020

Abstract
Starting from the introduction of the method of manned rescue lifting for deep hole with large diameter, a multi-function requirement was proposed for loading and communication transmission to develop a special wire rope for ZMK5200QJY40 rescue and lifting vehicle, and a built-in four-strand 4V × 39S non-rotating wire rope structure was established with the coal mines safety requirements. Through the combination of numerical calculation and experimental research, the specific parameters of the wire rope were calculated, the wire and the central cable material, the workshop production process were optimized, and a multi-function wire rope was trial-produced. Based on the failure tensile test, the wedge-shaped ring combination was preferred as the connection method between the wire rope and the lifting cabin, after a series of fatigue and insulation tests, actual working condition simulation tests, etc., a kind of wire rope with functions of manned lifting and communication has been successfully developed, the structure was reliable enough to ensure the safety of the manned rescue process, and it has a reference significance for the series of multi-functional wire ropes development.
The kinematic and dynamic characteristics and system optimization design of optical cable based on backtracking method
Authors: Lin Yongchi , Li Jie , Zheng Shouqiang , Shen Zhenzhu , Huang Weicheng , Song Jinling , Liang Fengshun , Gu Lizhi 
Published: August 2020

Abstract
Optical cable in modern communications is an important facility, and the laying of the optical cable is the key link in the installation. On the basis of analyzing the technological process and ensuring the requirements of optical cable laying, the kinematic parameters the tractor was first optimized and determined by the simplex method. analyzing the motion state and stress state of optical cable laying. E exponential function was selected as the movement mode of the cable to start and stop the cable. The kinematic characteristics of optical cable were programmed with the simplex method, and the optimal acceleration, uniform speed and deceleration distance were obtained corresponding to the three stages. Then the ideal parameters of cable cable’s velocity and acceleration were determined. According to this, the angular acceleration as well as other kinematic and dynamic characteristics of the roller slip roller was obtained ensuring these parameters being in coalescence with those of the tractor. The application study has shown that the system works well and meets the design expectation.
Structural Design and CFD Analysis of Engine Plastic Intake Manifold
Authors: Li Zhixiang , Li Xiaoyan 
Published: August 2020

Abstract
The quality of the intake manifold has a direct impact on the performance of the engine. Based on the characteristics of the cavity structure of the intake manifold, this paper designs a new three-dimensional cavity model of the intake manifolds. Then the author analyses the flow field of intake manifold, the flow velocity and pressure distribution and local pressure loss in the airway by using CFD fluid analysis software. The results show that the flow field inside the intake manifold is stable without obvious pressure loss area and no airflow wall separation phenomenon. Hence the resulting design could meet initial design requirements with improvement of power and economy of the engine.