bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of Machine Vision Technology in Garlic Planter
Authors: Chunlei Li , YueYang Li , ZhiCheng Tu , Zixiu Han , Huihui Wang 
Published: June 2021

Abstract
Mechanized garlic planting is a very necessary trend. At present, most garlic planters do not have the function of correcting garlic posture during the seeding process, which will greatly affect the growth of garlic seedlings [1]. This paper mainly describes how to recognize garlic orientation before garlic planting based on machine vision using Python language and LBP feature algorithm, and then correct it. This machine can accurately achieve the purpose of garlic clove scale buds facing upwards and increase the rate of positive buds.
Corossion failure analysis on cotter pins used for fittings of 500kV transmission tower
Authors: Hao Chen , Xin Du , Wei Sun , Xin Qiao , Xinai Guo 
Published: June 2021

Abstract
Transmission line is an important part of power system and plays a key role in the process of power transmission and distribution. As the skeleton of the transmission line, the reliability of the transmission tower is an important guarantee for the safe and stable operation of the power grid. In this paper, the corroded cotter pins of fittings used for 500kV transmission tower was investigated by means of macro-morphology inspection, chemical composition analysis, scanning electron micrograph analysis, microstructure analysis and energy spectrum analysis. The result showed that the misuse of material for cotter pins and sulfide discharged from industrial production were the main causes of corrosion of the cotter pins.
Corrosion analysis of guyed rod used for 500 kV transmission tower
Authors: Feng Tian , Hao Chen , Tao Zhang , Xinai Guo , Shi Xianda 
Published: June 2021

Abstract
As an important part of the guyed device of cable stayed tower, guyed rod plays a key role of preventing transmission tower from tilting and toppling. In this paper, the corroded guyed rod of 500kV transmission tower was investigated by means of macro-morphology inspection, chemical composition analysis, scanning electron micrograph analysis, microstructure analysis and energy spectrum analysis. The result showed that high content of corrosive sulfate in the soil near the leg of transmission tower was the main cause of corrosion of the guyed rod.
Error Analysis Method and Sensitivity Analysis for Linkage Transmission Mechanism
Authors: Lu Liu , Guocai MA , Xiaodong Jiang , Zhihong Cao , Wei Zhang , Ke Shang , Xin Jin 
Published: June 2021

Abstract
Given the linkage transmission mechanism with mutual restraint, coupling, and multi constraint conditions, due to the existence of machining errors of parts, the error accumulation in the assembly process leads to the uncertainty of position and posture. At present, there is no quantitative analysis. In this study, the small displacement torsor (SDT)method was used to describe the error variation of geometric elements, and the error transmission attribute of the joint surface was proposed by using a homogeneous transformation matrix. The error accumulation value of each assembly joint surface for the linkage transmission mechanism was analyzed by using MATLAB numerical algorithm, to predict the actual position change value of the frame caused by machining error and the sensitivity of factors affecting the assembly accuracy. The sensitivity can guide for improving assembly accuracy and optimizing technology.
Finite element analysis of the chassis in telescopic crawler crane
Authors: Bing Li , Xidong He , Jianguo Liao , Yulan Wei , Xing Luo , Siqi Li , Yongli Wang 
Published: June 2021

Abstract
In modern industry, crawler crane is an essential equipment. Chassis is an important component for crawler crane stability. In this paper, the finite element software ANSYS is used to establish the research model of SCC250TB crawler crane chassis. According to the stress characteristics of crawler crane, six typical working conditions are selected, and the corresponding stress nephogram is obtained through calculation. The model provides the basis for the strength and lightweight design of the crane’s chassis. It plays an important role in practical engineering projects.
Hydrodynamic and Circuit Simulation and Analysis of an Integrated Wind-wave Generator by AQWA® and SIMULINK®
Authors: Xin Yuankang , Liu Yuxuan , Zhu Guorui 
Published: June 2021

Abstract
The wind and the wave on the ocean are often in sync with each other. Under some extreme sea conditions, individual fans on generators will bear higher stress due to the impulse of the wave. The paper discusses the numerical stress simulation of the vertical column of the intermediate fan with and without the pendulum plate component individually and performs circuit voltage simulations of the generating parts on SIMULINK®. By analyzing the force on the fan column, we conclude that the generator may eliminate wave impulse to a certain degree through the combination of fan and pendulum structures. The generator could protect itself from the scour of the wave with the mutual protection of both the fan and the pendulum parts. The electric simulation also indicated that to receive a stable output of voltage, rectification and filtering processing on the circuit should be applied.
Investigation on Absorption and Diffusion of the Oxygen in the Asymmetric Face of the β-Silicon Carbide through the Born-Oppenheimer Molecular Dynamics
Authors: Yang Xiaocui , Zhu Nannan , Zhao Rongxing 
Published: June 2021

Abstract
Many methods had been proposed to process the β-silicon carbide, and the thermal oxidation-assisted polishing was considered as an efficient technique. The critical procedure in the thermal oxidation was absorption and diffusion process of the oxygen in the β-silicon carbide, especially in the asymmetric face. Therefore, the absorption and diffusion of the oxygen in the asymmetric face of the β-silicon carbide by born-oppenheimer molecular dynamics were studied. It could be observed from absorption and dissociation process of the O atom with the cell size that absorption of the oxygen in upper Si surface was fast, which was realized when the distance was smaller than 3Å. It could be observed from absorption and dissociation process of O atom with supercell size that absorption and oxidation for the Si surface was quickly, and steady oxide layer with silica was formed. On the contrary, absorption range of the C surface was smaller than that of the Si surface, and the surface recombination was more significant for the C surface. It could be calculated that the bond length of Si-O in the oxide layer was in the 1.65-1.77Å. The research products obtained in this study were propitious to reveal the mechanism in the thermal oxidation of asymmetric face of the β-silicon carbide with oxygen under ultra-high temperature.
Microstructure and mechanical properties of selective laser melted AlSi7Mg
Authors: Liang Liye , Pan Xuexin , Wang Guilan , Zhang Haiou , Zhang Hao 
Published: June 2021

Abstract
This paper focuses on researching the formation mechanism of mesh eutectic textures of AlSi7Mg manufactured by selective laser melting (SLM) and the relationship between the evolution of the eutectic Si structure and mechanical properties with ageing temperature. The microstructure of AlSi7Mg could be analyzed with the help of the scanning electron microscope (SEM), different thermal analysis (DTA), x-ray diffraction analysis (XRD). After a suitable heat treatment process, the strength of AlSi7Mg manufactured by SLM can surpass 440MPa. The article describes the relationship between microstructures and mechanical properties, which provides a basis for heat treatments for other researchers. The major outcome of this paper, it could help to formulate a heat treatment with high elongation or high strength for SLM AlSi7Mg. This article describes the reason for the formation of the mesh eutectic Si texture. It is believed that the fine mesh eutectic Si texture is the unique advantage of SLM technology over casting or forging technology.
Numerical Analysis Based on Oil Film Characteristics of Sliding Bearing
Authors: Congying Deng , Kai Yang , Sheng Lu , Xiang Chen , Yang Zhao , Ying Ma 
Published: June 2021

Abstract
Taking the finite-length sliding bearing as the research object, the Reynolds equation is solved by the finite difference method and the successive over-relaxation iteration method to obtain the oil film pressure. It is concluded that the dimensionless oil film characteristics are related to bearing eccentricity and length diameter ratio. In order to study the oil film characteristics of sliding bearing, the bearing eccentricity and length diameter ratio are taken as the research objects, and the oil film thickness, load component, attitude angle and end discharge flow are solved by numerical analysis. It is concluded that with the increase of eccentricity, the bearing capacity of oil film increases, the attitude angle decreases and the end discharge flow increases with the case of a certain length diameter ratio.
Numerical study of microplastic impact hydroforming process
Authors: Cai Sheng , Zhou Xuan , Zhu Yuzhen , Yang Shichong 
Published: June 2021

Abstract
Microplastic forming is a promising micro production technology with great advantages due to its excellent mechanical property, definite thermal stability and low manufacture cost. Impact hydroforming technology is a high strain rate forming method that can improve the limit of metal microplastic forming. In this study, FE-simulation is carried out to reveal the influence of different process parameters on the forming behaviors of micro impact hydroforming process. The forming depth is improved with the increase of the velocity. In addition, different areas of the formed parts are affected by the liquid pressure, bottom fillet, blank holder and friction condition. The strain distribution is inhomogeneous, and the ball head portion has the largest strain. The simulation result also shows the thinning effect is greatest at the center point and decreases from the center to the radius. Through the analysis of the process feasibility, the simulation results of microplastic impact hydroforming can provide references to the design and manufacture of actual impact hydroforming parts.
Research on piezoelectric stacked generator and its application
Authors: Duan Yuhan , Xu Jinxiang , Sui Li 
Published: June 2021

Abstract
In response to the energy density and fast activation requirements of small caliber ammunition fuzes for power supplies, this paper designs a piezoelectric stacked physical power supply that can generate electrical energy using the setback acceleration generated at the moment of ammunition firing as a power source. The paper designs the structure of the power supply according to the performance parameters of the selected piezoelectric materials and tests the power generation performance of the power supply using a simulated experimental setup. The experimental results demonstrate that the output voltage of the piezoelectric power supply has a linear relationship with the load. When the piezoelectric power supply charges the capacitor, the voltage across the energy storage capacitor also increases approximately with the increase of load, and the piezoelectric stacked power supply designed in this paper can meet the requirements of small caliber ammunition.
Structure design of small road snow remover
Authors: Xingzhihui  , Lijunling  
Published: June 2021

Abstract
According to the characteristics and degree of snowfall in Northeast China and the compaction characteristics of ice and snow on urban traffic roads, the equipment is designed according to local conditions, which can be widely used in various small area snow removal operations. The cleaning power of the machine is mainly provided by the gasoline engine. The power is transmitted to the actual rotating cleaning parts through the reducer, transmission shaft and chain transmission to complete the task. This paper briefly introduces the scheme design, structure design and parameter design of the small road snow remover.
Summary of the Prediction Methods of Tool Remaining Life Based on Data Collection
Authors: Chen Xi , Wu Jun , Zhou Tingting , Li Yunxia 
Published: June 2021

Abstract
According to different starting principles, this article has advanced the prediction methods of tool remaining life in FMS. It focuses on the physical model method and the method of collecting data based on specific signals and using it as the tool life prediction feature quantity. Then they showed their research status and summarized the corresponding advantages and disadvantages.
Technological Process Design for Disassembling the Joint Frame of A Certain Type of Surface-to-air Missile Co-launcher
Authors: Liu Hanchao , Wang Xuezhi , Li Shangwen , Guo Anxin 
Published: June 2021

Abstract
In order to better standardize the process of disassembly and assembly of a certain type of surface-to-air missile co-launcher assembly frame, improve the efficiency of bomb replacement, and shorten the preparation time for combat, this paper uses Pro/E three-dimensional modeling software to perform three-dimensional modeling of the main structure of this type of co-frame launcher, and carry out the analysis of mechanical interface adaptability.
The influence of temperature on the engagement process of the wet clutches
Authors: Yang Zhe 
Published: June 2021

Abstract
The wet clutch is an important component in the vehicle transmission system, which has an important influence on the smoothness and rapidity of the vehicle starting and shifting processes. As a friction element, wet clutches are usually troubled by the wear and breakage problems, caused by high temperature. To solve this problem and reveal the operating mechanism, a dynamic model, along the circumferential and axial direction is proposed to describe the engagement process. In addition, a lumped thermal resistance model is established to predict the changing trend of the temperature during the engagement process. Then, with these two models, an integrated model is proposed. From the simulation results, the initial temperature has little effect on the temperature rise of the wet clutch. While, it has an obvious influence on the viscous torque, the higher the temperature is, the smaller the viscous torque is. While, for the asperity torque, it is opposite.
Intelligent warehouse task information flow scheduling under fog computing environment
Authors: Lei Chen , Minzhi Jia 
Published: June 2021

Abstract
Traditional cloud computing systems used in intelligent warehouses are managed in a centralized manner. Faced with more and more intelligent terminal devices in the warehouse, the resources of the intelligent warehouse cannot be fully utilized. Therefore, a distributed approach is adopted to deploy fog computing nodes near smart terminal devices to provide real-time computing response. The network architecture of intelligent warehouse based on fog computing is designed, and a real-time task scheduling model is established considering the time delay problem. In this model, an improved artificial bee colony algorithm is used to schedule the task information flow and allocate a reasonable amount of computing data to the fog nodes. The simulation results show that the error between the calculated delay and the calibrated delay on the fog node is within the specified range and can meet the requirements of different task types for the time delay.
Online detection of part size based on laser contour scanner
Authors: Dingjie Hou , Shujun Li , Yingguang Sun , Yuan Li , Linxin Wang , Wei Zhao 
Published: June 2021

Abstract
In aerospace die manufacturing, the processing quality of the processed workpiece is an important guarantee for the quality of the final product. Traditional detection methods have high labor intensity and low efficiency. Visual detection can only detect width, not depth information. Based on this, this paper proposes a non-contact laser scanning point cloud processing quality online detection method, through the laser contour scanner to obtain the actual machining parts of the surface point cloud information, and then in the Geomagic Control environment of the actual manufacturing parts point cloud information and Solid Works theoretical design model comparison analysis. Thus, the manufacturing error of the actual manufacturing parts can be obtained, which provides a fast and accurate judgment method for the quality control of the product manufacturing.
The design of an improved intelligent guide stick for the blind
Authors: Yunan Ren , Junzhe Huang , Yixuan Wang , Haohan Zhu , Zhiyu Li , Jin He 
Published: June 2021

Abstract
There are about 17 million blind people in China, which means that one out of every 80 people is blind. However, due to the lack of facilities and policies to help the blind, many blind people can’t enter some normal places, which brings lots of inconveniences to the blind. In order to make blind people travel more conveniently and safely, this paper designs an improved intelligent guide stick to provide security guide for the blind’s daily travel and their precise location for their guardians. The location data and the images of surroundings were sent to the guardian’s smart phone to help them find the blind especially in a multistory building. In this paper, 10 blind people walked with the help of the improved guide stick in a 3-story building that was divided into 12 different areas. The guardians received text messages and real-time images sent by the guide stick to determine where the blinds were. Finally, 300 groups of data were obtained, among which 282 groups were got when the blind people were successfully located and found, with the successful finding rate of 94%. The experimental results show that with the help of the improved guide stick, the blind can be located more precisely and effectively.
Development of a Test Bench for Transmission Efficiency of Small Modulus Worm Helical Gears
Authors: Jie Feng , Dong Xin , Binkui Chen , Yonghong Chen 
Published: June 2021

Abstract
Worm helical gear transmission falls between lever transmission and inclined transmission in principle. There is large relative sliding speed between the conjugate tooth surfaces, and the transmission efficiency is low. To accurately grasp the changing law of worm helical gear transmission efficiency and propose an effective efficiency improvement method, this paper designed and built a transmission efficiency test bench for small modulus worm helical gear transmission pair.
A method of workpiece location based on improved generalized Hough transform
Authors: Yongfei Zhang , Tong Zhang 
Published: June 2021

Abstract
In order to solve the problem that the workpiece is not easy to identify in the complex environment in the industrial processing, sorting and other automatic production links, a workpiece positioning method based on Improved Generalized Hough transform, also known as eif-ght, is proposed. In order to solve the problem of large time consumption and high memory consumption of traditional generalized Hough transform in target detection, this paper uses the rotation invariant feature angle formed by any two edge points in the image as the R table index under the condition of image preprocessing to realize the representation of target shape, and uses particle swarm intelligent evolutionary algorithm to speed up the search The final target is determined by similarity measurement. The experimental results show that when the workpiece rotates and shifts, and in the complex environment with noise, local occlusion, nonlinear illumination and so on, it can achieve stable and efficient positioning.
Application of Numerical GPC for Temperature Control
Authors: Ding Sizhe 
Published: June 2021

Abstract
We design a controller based on generalized predictive control (GPC), which is mainly used to intelligently regulate the temperature in a constant temperature warehouse with uncertain parameters. We model it in a generalized control system and use the properties of GPC to make this controller adaptive to different parameters and resistant to random disturbances. Since the warehouse has high requirements for temperature control, we extend the GPC method appropriately numerically and use its numerical equivalent proposition to construct a fast solution algorithm, which is applied in specific simulation experiments. The simulation results prove that the controller we constructed is effective with high adaptability to different parameters and random disturbances and can resist destructive disturbances to a certain extent.
Identification of Biomass Powder Fuel Based on Image Processing and Feature Engineering
Authors: En Lan Jing 
Published: June 2021

Abstract
Biomass fuels have a wide application prospect in thermal power generation. Different fuels have different physical and chemical properties and are reflected in the complex combustion and pollution emission properties during application. It is necessary to determine the type of biomass fuel. This paper proposes an image-based method to identify the type of biomass fuel and some related work derived from it. A feature selection rule that can explain the physical meaning of the fuel was designed. Through an ensemble learning method named Stacking and an image partition recognition strategy, the recognition task is integrated from the perspective of algorithms and data. The 10-fold cross-check on the training set has an accuracy of more than 98%, and the effectiveness of the image partition recognition strategy was proved mathematically.
Optimization of Assembly Sequence Planning of Turbine Low-pressure Rotor Blades Based on the Improved Simulated Annealing Algorithm
Authors: Jun-kong Liu , Li-li LI 
Published: June 2021

Abstract
In view of the NP-hard characteristics of assembly sequence planning problem and the low efficiency of solving the relatively optimal assembly sequence, this paper adopts meta-heuristic algorithms to solve the rotor blades assembly sequence optimization problem, Taking solution accuracy, solution efficiency, and solution robustness as assessment criteria, the effectiveness of solving the rotor blades assembly sequence with several meta-heuristic algorithms is compared and analyzed, the comparison results show that the simulated annealing algorithm has the best solution accuracy, efficiency and robustness for the assembly sequence optimization problem of rotor blades. In order to solve some problems during the solving process of simulated annealing, one improvement is added into it, by adding the reheating process to the SA, the probability that the SA algorithm accepts inferior solutions is increased, and the ability of SA jumping out of the local optimal solution is increased, and the global search capability of the SA algorithm is further enhanced. Finally, the effectiveness of the improved simulated annealing algorithm is verified in this paper by the assembly of steam turbine rotor blades.