bluuebunny/crossref_metadata_2025_split huggingface dataset:
An on-line detection technology based on machine vision for micro parts assembly
Authors: An Zeru , Liu Bingguo , Liu Guodong , Lu Binghui , Zhuang Zhitao , Yang Yongmeng 
Published: October 2020

AbstractTarget preparation technology is one of the core technologies in ICF research. There are many micro parts on the target, the gap between parts is only a few microns, so it is difficult to assemble and realize automatic detection in the assembly process. In this paper, a three-way orthogonal micro vision system is proposed to detect the real-time position and posture of the through-hole and fill-tube of the parts on the target capsule, so to realize the real-time detection in the assembly process. The optical design of the hollow 45-degree reflector is proposed to solve the contradiction between the positive imaging of the through-hole and the positive insertion of the fill-tube. The scheme design of the detection system and the calculation of the system parameters are completed. The precise calibration of the three-dimensional micro vision system and the unified method of the coordinate relationship are proposed. Finally, the experimental test of the online detection system of the target assembly is carried out. The test results show that the system has the following functions. The accuracy of alignment is better than 1μm, and the accuracy of angle alignment is better than 0.2°. It realizes the automation and high-precision detection of the assembly process of small parts, which provides a reliable basis for the automatic assembly of targets for ICF experiments.
Design and Kinematics Analysis for a Cable-driven Underwater Snake Arm Robot
Authors: Xue Fufeng , Fan Yu , Fan Zhimin 
Published: October 2020

Abstract
Aiming at the problem that underwater manipulators are mostly rigid structures and cannot meet the requirements of flexible operations, this paper designs and studies a cable-driven underwater snake arm robot. The snake arm is composed of multiple rigid links connected in series, and the joint rotation is realized by controlling the change of the length of the driving cable, which can effectively solve the problem that the traditional underwater manipulator has poor flexibility and cannot work in a narrow space. In this paper, the 3-D model of the cable-driven underwater snake arm is carried out, the mapping relations among driving space, joint space and operation space are analyzed.
Digital AGC Circuit Design based on FPGA
Authors: Li Yuekai , Yang Lei , Yu Lefu , Liao Boyang , Xu Pengfei 
Published: October 2020

Abstract
Users' demand for broadband wireless and mobile is increasing, making wireless broadband access technology WiMAX, arise at the historic moment, rapid development, has become the focus of attention in the industry these two years. In this paper, based on the WiMAX transmission standard 802.16D, the AGC of channel demodulation in WiMAX receiver is described in detail. Firstly, the basic components and main characteristic indexes of the AUTOMATIC gain control system are introduced, and the output formula of AGC model is obtained through the analysis of a step-type AGC. Then the adc and AGC circuits in THE AGC system in the WiMAX receiver are introduced and analyzed theoretically. In this paper, SPW model is used to analyze the algorithm of the basic structure of AGC circuit. Combined with the simulation results, AGC circuit is explained in detail and parameters are explained. Finally, the verification results based on SPW and FPGA are given. The individual performance test of AGC is carried out through SPW, and combined with the performance test of the simulation system, it shows that AGC can work in cooperation with other modules of the system. In FPGA test, it can be proved that AGC can also work well with Verilog.
Statics analysis for automotive rope-wheel glass regulator
Authors: Chen Mingzhang , Xiong Xiaoshuang , Zhuang Wuhao , Chen Zhongbao 
Published: October 2020

Abstract
Analyzing strength, stiffness, fatigue and wear of automotive rope-wheel glass regulator (glass regulator for short) and optimizing structure of glass regulator benefit improving working stability. Before analyzing strength, stiffness, fatigue and wear, statics analysis is necessary to be taken for investigating stress and displacement of key parts. Statics theoretical and finite element analysis of glass regulator in three kinds of working conditions (locked-rotor on the top dead center, locked-rotor on the bottom dead center, normal working) are taken. Results suggest that concentrated stress and large displacement mainly exist on guide rail. The concentrated stress also exists on slider, guide pulley and motor plate, but maximum stress value and large displacement risk on them are small. Statics analysis provides analysis of strength, stiffness, fatigue and wear with support on data and offers driving data for optimizing structure of glass regulator.
A Computer Vision System Applied to The Recognition of Different Capacitors
Authors: Zhu Shengye 
Published: October 2020

Abstract
In this paper, we establish an automation system based on computer vision for the identification of capacitors with different capacitances. The images of capacitors on the industrial assembly line are obtained in real time by using a CCD industrial camera. Then, the obtained images based on RGB model are transformed into HSI color format to avoid the effect of environmental brightness. According to the calculated characteristic hue and saturation values, the established automation system could accurately and effectively identify the capacitances of the capacitors by colors. The identification results would provide accurate information for subsequent robot arm recognition, location, collection, and other operations. By applying to the industrial assembly line, this computer vision system could greatly improve the automation level and product quality of industrial production.
Study on the Stability of an Electronically Controlled Hydraulic Drive Vehicle Based on Sliding-mode Control and Fuzzy Control Algorithm
Authors: Zhu Xiaoji , Wang Qiang , He Xiaohui , Du Maoqiang , Sha Yigang 
Published: October 2020

Abstract
In order to improve the stability of an electronically controlled hydraulic drive four-wheel drive vehicle, a two-degree-of-freedom and seven-degree-of-freedom vehicle mathematical model was established and analyzed. The entire vehicle was obtained through the combination of sliding-mode control control and fuzzy algorithm Control, according to the dynamic force of the wheels, the torque distribution between the different wheels of the vehicle is adjusted. The stability control strategy of the electronically controlled hydraulic drive vehicle is verified through the joint simulation of MATLAB/simulink and Carsim. Analysis of working conditions shows the effectiveness of the proposed stability.
A Reliability based Multidisciplinary Design Optimization Method with Multi-Source Uncertainties
Authors: Fu Chao , Liu Jihong , Xu WenTing , Yu HongYan 
Published: October 2020

Abstract
The complexity of engineering systems is increasing greatly, and more coupled disciplines and multi-source uncertainties are involved in the design and development of complex engineered systems (CESs). Actually, uncertainties are ubiquitous in design of CESs, which can be mainly classified into alteatory uncertainty (AU) and epistemic uncertainty (EU). To gain high reliability and safety of CESs, the Reliability-based MDO (RBMDO) which considers uncertainties of design variables and parameters has become a hot research topic. In this paper, the quantification of aleatory and epistemic uncertainties based on the probability theory and convex set-theory, multidisciplinary comprehensive reliability evaluation index, adaptive collaborative optimization strategy based on the intelligent optimization algorithm, sequential multidisciplinary reliability analysis method based on the concurrent subspace optimization (CSSO) and performance measure approach (PMA), and hierarchical and hybrid sequential optimization and reliability assessment (HSORA) RBMDO strategy under multi-source uncertainties have been researched. All of the researches can expand and improve the RBMDO theoretical system, and also provide the effective method for the design and optimization of CESs under multi-source uncertainties.
Dynamic Simulation Optimization of Vacuum Circuit Breaker Based on Virtual Prototype
Authors: Zhao Fangshuai , Wang Yuhao , Zhang Yang , Li Dongheng 
Published: October 2020

Abstract
In order to study the mechanical characteristics of the vacuum circuit breaker, virtual prototype technology is used to establish a dynamic simulation model of the operating mechanism of the VS1 vacuum circuit breaker, and the dynamic characteristics of the opening and closing process of the circuit breaker are obtained. Then on this basis, in order to reduce the closing bounce of the circuit breaker, the various parameters of the mechanism that affect the closing bounce are selected as design variables for optimization and improvement. The simulation results prove that appropriately increasing the preload of the contact spring can effectively reduce the closing bounce.
Equivalence Analysis of Mass-matching of Simulated Space Manipulator Based on Certain Quality
Authors: Feng W , Li CH X , Wang CH X , Ying W M , Guo X 
Published: October 2020

Abstract
Space manipulator is a high level of integrated space of mechanical and electrical systems in mechanical, electrical, thermal and control fields. Before the experiments, it’s necessary to use a simulated manipulator to verify the reliability of a zero-gravity test system. To assure the consistency between a simulated manipulator and a space manipulator, the mass and barycenter of a simulated manipulator need to be matched. In this paper, an equivalent method based on constant mass is proposed, which can quickly adjust the position of the center of mass of the simulated Space Manipulator joint and achieve the desired objective. Firstly, the fan-shaped and notched counterweights are designed to meet the adjustment requirements of radial and axial barycenter. Then, the joint barycenter models of different types of counterweights are established, and a barycenter equivalence optimization scheme based on constant mass is proposed. Through the design scheme of this paper, the quality and center of mass meet the requirements, and the experimental verification of the simulation manipulator is realized.
The development of self-optimizing and pre-diagnosis about intelligent feeder based on digital technology
Authors: Huan Yang , Bin Huliang , Rong Wangshang 
Published: October 2020

Abstract
Cigarette factory barn feeder elevator belt starts and stops frequently cause feed flow unstable, and increased the equipment failure rate. Overhead materials lead to cut off flow and other problems will have a serious impact on the inherent quality of cigarette products. Transmission based digital technology; we developed an intelligent feeder for self-optimized pre-diagnosis. Byimproving the control mode of feeding bin bottom belt and lifting belt, it can realize the frequency conversion control of anti-overhead and lifting belt motor, with the help of Smart Sensor motor intelligent sensor and Ethernet IO module monitors the transmission of the feeder, realize that self-diagnostics and the whole monitoring of the running state.it achieves the purpose of intelligent early warning and prevention of equipment. The improved control system operates reliably and the material supply flow is stable, the frequency of cutoff is obviously reduced, disconnection associated with the feeder is completely eliminated, guarantee the technological quality of cigarette products.
Machining process rules for connecting rod parts and special fixture design
Authors: Yi He 
Published: October 2020

Abstract
for the current development of our country, the development of industry is going hand in hand with the economic development of our country, with the development of industry, the overall maturity of machinery manufacturing industry is gradually increasing. In the mechanical manufacturing industry, connecting rod parts are one of the important components of piston engine and compressor, so for these two kinds of machinery, the importance of connecting rod parts is self-evident. This paper will take the machining technology of connecting rod and the corresponding furniture design in the processing process as the starting point to analyze the problems that need attention in the design and processing process.
Health status prediction of airborne systems based on transfer learning
Authors: Sun Qinhao , Song Dong , Lin Bin 
Published: October 2020

Abstract
In this paper, based on the prediction of the decay mode of the system health state, a health pattern recognition and prediction method based on transfer learning is proposed. In the context of big data, the system's healthy decline mode is summarized from the massive historical flight data, and then the research on the health status of the airborne system based on the recognition results is carried out. Firstly, this paper demonstrates the feasibility of transfer learning applied to the prediction of the health status of airborne systems. Then, a HMM-based parameter migration health state prediction method is proposed. Finally, the model is verified by the hydraulic system of a certain type of aircraft. The results show that the model can predict the time when the health state changes.
Precision design of differential combination torque measuring device for butt lock with in situ calibration
Authors: Jiejun Lin , Tao Bo , Weijie Jiang 
Published: October 2020

Abstract
In order to solve the problem that the current docking mechanism of the docking lock differential combination test cannot be met, an in-situ calibrated docking lock differential combination torque measurement device is designed. The calibration device uses the torque transmission shaft to differentially lock the docking lock in high and low temperature environments. The combined torque value is transmitted to the normal temperature environment for measurement, and the in-situ calibration of the measured torque sensor is achieved through a clever design. Analyze the error sources of the device, and distribute the errors according to the device technical indicators. The calculation results show that the designed in-situ calibrated butt lock differential combination torque measuring device has a measuring system of 2.25%, and the maximum allowable error of the calibration system is 0.62%, which meets the technical specifications of the device.
Monte Carlo analysis for safety and reliability of rail transit signal system based on Cloud Computing
Authors: Ren Weihe , Ma Lianchuan , Wang Yiwei 
Published: October 2020

Abstract
Starting from the hot issue of introducing cloud computing into rail transit industry, this paper analyses the impact of cloud computing virtualization technology on the safety and reliability indexes of rail transit signal system, Monte Carlo method is used to model two out of 3,double two out of two and two out of two redundant structures from three main parameters of common cause failure,fault diagnosis coverage rate and dangerous failure rate, considering the uncertainty of relevant parameters. The reliability and safety indexes are calculated and simulated with MATLAB. The results show that the two out of three structure is more suitable for the rail transit signal system based on cloud computing.
Design of Sea Ice Monitoring UAV Platform Based on Machine Learning
Authors: Liu Jianlong , Dou Yinke , Zuo Guangyu 
Published: October 2020

Abstract
Machine learning, as one of the most currently remarkably intelligent techniques, has achieved great success in many applications. It makes mechanical instruments and equipment become more automated. In order to realize the intelligent monitoring of polar glacier movement and environmental data, this paper designs a buoy platform that can be equipped with a small environmental monitoring UAV (Unmanned Aerial Vehicle) based on automated ice station technology. On the basis of the original environmental monitoring capabilities of the platform, the target structure is designed according to the needs of the landing of the UAV. Based on the SVM (Support Vector Machine) algorithm, the conditions are predicted whether to start the UAV according to the environment parameters around the platform, which reduce the risk of damage to the UAV due to wind and snow. The superiority of the SVM algorithm in UAV environmental recognition has been verified through field experiments.
Style Transfer Using Whitening and Coloring to Realize Feature Transformation
Authors: Sijia Li , Wenbai Chen 
Published: October 2020

Abstract
This paper proposes a general image style transfer method based on VGG network. This method does not need to learn and pre-train any kind of style in advance. The algorithm mainly implements the style transfer task by reconstructing the automatic decoder. In the process of feature extraction, the algorithm matches the content features and style features through whitening and coloring. We conducted a series of experiments with different photographic images. The experimental results show that our method has a simple training process, low computational complexity and high computational speed and excellent generalization ability.
Development and Application of Lunar Sample Unsealing and Processing Equipment
Authors: Jin WANG , Chunyong WANG 
Published: October 2020

Abstract
The main goal of exploring outer space is to collect samples of extraterrestrial objects and return samples to Earth. Our country is going to launch the Chang'e-5 Lunar Probe Task to collect lunar samples and bring them back to Earth for sample analysis. Unsealing the vacuum lunar sample container and protecting the sample with high-purity nitrogen at the same time become problems urgently. This paper introduces one kind of equipment for unsealing and processing the vacuum lunar sample container in Chang'e-5 Lunar Probe Task. This equipment is divided into four parts: transfer chamber, operating chamber, unsealing chamber and purification unit, which can unseal samples with a vacuum of 10-3Pa and keep lunar samples in an environment protected by high-purity nitrogen with a water concentration less than 30ppm and an oxygen concentration less than 20ppm.
Design of diesel engine fault prediction system based on MATLAB
Authors: Liu Wei , Gan Yu , Chen Ning , Wang Zhimin 
Published: October 2020

Abstract
For the fault of main bearing wear of diesel engine, this paper puts forward the idea of combing artificial neural network and bearing wear warning system together. Selecting RBF neural network calculating fast as a research tool, diesel cross-head slide block working as the research object, we make the related systems. When the position of the slider changes due to wear, the sensor which monitors the position can immediately transmit the fault data to neural networks, after calculation, the neural network put the fault type out, to search the place of the failure. This method is of high accuracy, fast speed, and the results suggest clear.
Optimal Design of Information Elements in Virtual Reality System Based on TOPSIS
Authors: Fu Qianwen , Lv Jian 
Published: October 2020

Abstract
Aiming at the problems of heavy cognitive load of users and uncoordinated allocation of design resources in virtual environment, this paper comprehensively analyzes the explicit expression of information in user interaction activities, builds SMCR model, and proposes an optimization model of virtual reality interface interaction system based on TOPSIS. Through the computer sensing of user actions, behaviors, tasks and other information in the virtual environment, the mapping relationship between resources and information is determined according to the resource allocation scheme based on SMCR mode, and encoded in the form of information representation; Based on TOPSIS, the importance of design resource elements is sorted. Through further refining the information representation, the sorting results are used as precipitated knowledge for scheme design to realize the optimal layout of interactive interface visual elements. The results show that the virtual reality interface system based on this model mobilizes the enthusiasm of users to actively interact and improves the usability and timeliness of human-computer interaction.
Study on Multi-scale Time-frequency Analysis of Cutting Force Based on EMD Method
Authors: Wu Ying 
Published: October 2020

Abstract
A method for establishing the multi-scale cutting force spectrum under complex random load history is presented according to the non-stationary random characteristics of the cutting force-time history. The IMF components of different time scales are obtained by EMD decomposition of complex random cutting force-time history data. The probability density distribution of cutting force in certain frequency band is obtained as the load spectrum on this time scale. This method avoids the disadvantage of the conventional method that the load or stress is regarded as a constant or variable amplitude load under one frequency to establish the load spectrum. The method for establishing the multi-scale load spectrum can provide a basis for fatigue life calculation and fatigue reliability analysis of mechanical components.
Simulation Analysis of the Influence of Micro-texture Parameters on Tool Strength Based on ANSYS
Authors: Li Qinghua , Zeng Yu , Zhao Ming , Tian Ranran 
Published: October 2020

Abstract
In this paper, the influence of the micro-texture parameters of the tool surface on the tool strength is studied, and the texture parameters with less influence are selected.Firstly, the cutting force of the PCBN tool in the actual cutting process is measured by the dynamometer, and then the 3D model of the tool is imported through the finite element analysis software ANSYS. After the mesh is divided, certain constraints and the measured cutting force are applied, and finally get the deformation and equivalent stress of the tool for analysis.The results show that when designing the micro-texture, the width of the micro-texture should be between 90-110μm, the spacing of the micro-texture should be between 110-120μm, and the margin between the micro-texture and the cutting edge should be between 160-180μm. The depth of the micro-texture should be between 30-40μm, so that it can not only play the role of micro-texture on the cutting tool, but also reduce its impact on the strength of the tool.
Research and Design on the DMA Monitoring System Based on Low-power Consumption
Authors: Ren-xuan FU , Xue-Liang  
Published: October 2020

Abstract
Starting from the requirements of lower leakage rate of water supply pipeline network and using DMA (District Metered Area) method, a low-power consumption of flow monitoring system is designed in this paper. Real-time monitoring on the flow points in each DMA (independent measurement area) can help find the abnormal of water supply network, analyse the leakage situation of the area, locate the leakage point, and reduce the leakage rate of supply network and the difference rate between production and sale, connecting with other information systems of supply network to achieve fast trouble-shooting.
A new life prediction method of Intelligent meters based on adaptive weighting coefficients
Authors: Yihao Fu , Jun Wang , Shengjuan Xue , Zhipeng Li , Xu Fang , Jinlin Zou 
Published: October 2020

Abstract
In order to achieve the purpose of predicting the batch life index of intelligent meters in using, this paper analyzes the history failure data of the products, comprehensively considers the stresses such as temperature and humidity, then proposes an improved Weibull distribution statistical analysis method based on adaptive weighting coefficient, which is applied to the batch life prediction of intelligent meters. The prediction error of stage failure rate is less than 0.0002 fit.