bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and implementation of laser marking machine control system
Authors: Sheng Minghua , Zhou Min , Yang Yongjie 
Published: January 2021

Abstract
The laser marking control system based on STM32 microprocessor is designed. Combined with the advantages of high efficiency and low cost of embedded control system, the overall scheme design is described and the peripheral hardware and the underlying driver are analyzed and designed. The microprocessor controls the switch of the laser by receiving the marking data sent by the upper computer via USB, and at the same time, the simulated galvanometer control protocol (XY2-100) controls the scanning of the galvanometer. SDRAM is used to enhance the data storage and processing capacity of the microprocessor. In order to improve the security and reliability of data, symmetric encryption algorithm is designed. After testing, the designed system meets the requirement of actual marking precision and has good practical value.
Adversarial examples with transferred camouflage style for object detection
Authors: Deng Xiaotong , Fang Zheng , Zheng Yunfei , Wang Yang , Huang Junming , Wang Xiaobing , Cao Tieyong 
Published: January 2021

Abstract
Most of existing adversarial examples attacking methods for object detection models aim at generating subtle perturbation which is invisible to human vision. However, some perturbations with stronger intensity are equally effective and can even make the objects in adversarial examples more invisible. In this paper, an attack model based on the Generative Adversarial Network and style transfer method is designed to craft and add perturbation with camouflage style to the object area in the image. Experiments on PASCAL VOC 2012 dataset demonstrated that Adversarial examples generated from our model can attack both proposal-based detectors and regression-based object detection models effectively, and reduce the visual saliency of the objects.
Application of AR Technology in Aircraft Maintenance Manual
Authors: Hongli Sun , Qingmiao Wang , Weixuan Yu , Yuan Liu , Yihui Cui , Hongchao Wang 
Published: January 2021

Abstract
The readability, interactivity and generality of aircraft maintenance manual directly affect maintenance cycle and cost. This paper presents the application of augmented reality technology in the development process of aircraft maintenance manual. The overall framework and functional requirements of the development of augmented reality intelligent maintenance system are given. Taking the leakage inspection procedure of AMM manual as an example, the process of augmented reality technical manual aircraft maintenance publication is explored.
Analysis on the Development Status of Automobile Lightweight Welding Technology
Authors: Zhang Yue 
Published: January 2021

Abstract
The lightweight production technology of automobiles is the mainstream technology of automobile production in the world today. As a far-sighted world power, domestic automobile manufacturers will attach great importance to the combination of lightweight production technology of automobiles with their own automobile production. The lightweight production of automobiles can not only complete the efficient operation of automobile engines and reduce automobile exhaust emissions, but also achieve the goal of energy saving, emission reduction, green and sustainable development. This article will analyze the core content of the lightweight production technology of automobiles, and make appropriate adjustments based on the functional requirements of the production vehicles. The author hopes that while ensuring that the structural design and material usage of the car meet market standards, it also reasonably controls costs and increases revenue. This article will focus on the analysis of the development status of automotive lightweight production and welding production technology, and put forward reasonable suggestions.
Effect of Rolling Mode on Grain Growth of Electrodeposited Nanocrystalline Nickel
Authors: Ni Haitao , Zhu Jiang , Yang Heshan , Wang Lixia 
Published: January 2021

Abstract
The electrodeposited nanocrystalline nickel samples were deformed by conventional unidirectional rolling, cross rolling and pack rolling, respectively. The effect of rolling mode on grain growth behavior was investigated by x-ray line profile analysis, transmission electron microscopy observation and microhardness measurement. Quantitative analysis indicated that rolling deformation induced grain growth is associated with grain rotation as well as dislocation activity, no matter what the rolling mode we use. Based on grain rotation induced grain growth, cross rolling induced grain growth is the most obvious, followed by conventional unidirectional rolling and pack rolling.
Design and simulation of DC regulated circuit for current source input type based on Tina-TI
Authors: Xue Tao , Hu Xiangnan , Fang Chun’en , Fu Xuhui , Li Wei , Zhang Ning , Chen Junping 
Published: January 2021

Abstract
In the multi-output high-voltage isolated power supply for solid-state switches, LCL resonant network is used to obtain the constant current source on the bus, and the bus current is independent of the load. Therefore, the secondary side of the toroidal transformer needs to use the current input voltage regulator circuit. When the input is a current source instead of a voltage source, the traditional voltage regulator circuit is no longer applicable. Therefore, this paper focuses on the study of dc voltage regulated circuit with current source input. Compared with the traditional linear regulated power supply, switching power supply has the advantages of high efficiency, large output power, small size, light weight and low cost. In this paper, pulse width modulation (PWM) technology is used to control the switching on and off, and UC3843 is used to design a switch type regulated power supply with small size, simple circuit, adjustable output and over voltage protection function. Tina-TI software was used for simulation analysis, and the main circuit and control circuit were built. The current source of 1.25A and 40kHz output by the secondary side of the toroidal transformer is converted into a stable 10V DC voltage source, which verified the correctness of the design. Tina-TI software can be used to analyze and design power supply with different requirements, improve power efficiency, reduce design complexity, and thus shorten development cycles.
Research on multi-parameter correction of vibration system based on genetic Algorithm
Authors: He Shihao , Zhou Cheng , Yu Cungui 
Published: January 2021

Abstract
In order to solve the problem of fast solving the vibration system under complex excitation, a co-simulation method based on the mathematical simulation model and the multi-parameter correction of the vibration system is proposed. According to the dynamics theory of multi-body systems, the dynamic equations of the system are derived. Runge-Kutta method and MATLAB software are used to solve the dynamic equations. Compared with ADAMS multi-body simulation, the accuracy and efficiency of the dynamic equations are proved. The vibration test is carried out to obtain the acceleration data required to construct the multi-objective function. Optimal solution of modified parameters is obtained by multi-objective genetic algorithm. Finally, the vibration test bench system was used to verify the feasibility of the multi-parameter correction method. The results show that the error of the modified objective function of the constructed vibration test bench system is greatly reduced, which verifies the effectiveness of the multi-parameter correction method.
Creep failure analysis of heterogeneous steel welded steam pipeline T91-TP347H
Authors: Yi-Lu Fan , Cao Yu , Liu Chuan-huai , Ji Dong-Mei 
Published: January 2021

Abstract
Finite element analysis was carried out on the actual service process of dissimilar steel welded pipes of T91-TP347H, and numerical analysis was carried out on the internal and external surface of the joint and the weld interface on both sides from three aspects of maximum principal stress, equivalent stress and stress triaxiality. The results show that the steam side T91-weld area is weakened seriously, the holes are more nucleated, the stress is more concentrated, the holes are easy to expand, it belongs to the high stress triaxial area, the hole density is high, is a dangerous area. Stress relaxation occurs on T91 side with the increase of service time, so the reason for failure is not the increase of stress level in the stress concentration area, but the deterioration of material performance is caused by long service time.
Analysis and Strategy on Reliability and Security of Intelligent Electric Meter Software
Authors: Wang Rui , Gong Qiujing , Zhen Ke , Hou Xing Zhe , He Min , Wang Ling Yu 
Published: January 2021

Abstract
In recent years, with the rapid development of smart grid, Intelligent Electric Meter is becoming more and more popular. As an important terminal of Intelligent Electric Meter development, its reliability and security play an important role in the development of Intelligent Electric Meter. However, in practical application, Intelligent Electric Meter users and power grid have more testing methods and requirements for Intelligent Electric Meter functionality. The reliability and security of smart meter software have the following problems: the software architecture is not uniform, the software testing involves less penetration testing, and the loopholes in the software testing are not easy to find. In this paper, by analyzing the embedded software architecture of Intelligent Electric Meter, combined with penetration testing method, a set of Intelligent Electric Meter software reliability and security system is established to ensure that the reliability and security test of Intelligent Electric Meter software can be carried out more scientifically.
Design of Structure and Control System of Intelligent Parking Equipment Based on TRIZ and Cloud Platform
Authors: Pingping LIU , Konglei ZHU 
Published: January 2021

Abstract
With the rapid growth of the number of cars in our country, parking difficulty, especially the phenomenon of parking difficulty and parking annoyance in residential areas has become the focus of people’s attention. To solve this problem, an intelligent parking device is designed. The influencing factors of parking time-consuming and laborious are analyzed. The TRIZ theory is used to convert the engineering technical parameters, and the technical contradiction matrix is established. The improvement scheme of parking equipment structure is designed through 40 invention principles, and the architecture of parking equipment management and control system is built by using cloud platform. Through the innovative design of parking equipment, it can reduce the space area of parking space, realize the automatic retrieval of empty parking spaces and the automatic parking and taking of cars, which provides a feasible solution for the industrialization of parking equipment in residential areas.
Electric Power Intelligent Inspection Robot: a Review
Authors: Zhang Tianzhe , Dai Jun 
Published: January 2021

Abstract
The electric power intelligent inspection robot is equipped with high-definition visible light camera, infrared thermal imager, sound-collecting equipment and other intelligent detection devices and intelligent analysis algorithm software to complete the control loop from rapid acquisition of all-weather data, real-time information transmission, intelligent analysis and early warning to fast decision feedback. Therefore, instead of manual inspection, the automatic detection and intelligent analysis of the state of the power equipment are realized, and the reliability of the operation of the power grid and the power equipment is improved. The use of electric power intelligent inspection robots is an important means to realize the intelligentization of power grids, and is an important direction for the future development of smart grids. Given the current research status and deficiencies at home and abroad, this paper discusses the electric power intelligent inspection robots from aspects of main technologies, cutting-edge technology, functional positioning and standard system, and discusses the research status of electric intelligent inspection robots. On this basis, future research and development direction are put forward. This paper has a guiding role and reference value for the research of electric power intelligent inspection robot.
Research on Wireless Water Quality Monitoring Method Based on STM32
Authors: Wang Hao , Wang Shudong , Liu Shen , Chen Yong , Li Runqing 
Published: January 2021

Abstract
Since the 21st century, people’s production and life have caused water pollution to varying degrees, so real-time monitoring of water quality has become crucial. Based on STM32, this paper proposes a water quality monitoring method that can continuously monitor three water quality parameters: water temperature, PH value, and turbidity. The water quality monitoring method is mainly based on the extended circuit of the STM32 series single-chip microcomputer, including PH sensor control circuit module, temperature sensor circuit module, wireless network communication circuit module, turbidity sensor circuit module, etc. Then based on the C language to write the MCU data acquisition program and the PC program developed on the virtual instrument design language platform, the PC program is mainly composed of the main PC and the MCU communication, data analysis and processing, process monitoring and other subroutines. The water quality monitoring method proposed in this paper can detect different water quality in real time through wireless transmission. This new method is not only suitable for the future development of the current water quality monitoring market, but also has a very promising application prospect.
Study on Parametric Resonance of Support Parameters to Flow Pipeline
Authors: Renzhi WU , Ang WANG , Lei QIN , Jiapan WANG 
Published: January 2021

Abstract
The influence of support parameters on the parametric resonance of fluid conveying pipeline under pulsating flow excitation is studied. Firstly, the mathematical model of fluid conveying pipeline and support system is established, Then the Galerkin method is used for discretization, and the incremental harmonic balance method is used to solve the problem. The effects of support stiffness, support damping, support position, support number and support spacing on the boundary of parametric resonance region and the parametric resonance response are discussed. The results show that under the fixed pulsating amplitude, the pulsating frequency range of system instability becomes smaller with the increase of support stiffness, support damping and the number of support, while the support position and support spacing have less influence on it. The change of support stiffness and support position has little influence on the pulsation frequency that the parametric resonance lasts to the end, but the increase of brace damping makes its value decrease obviously. The research results can provide a theoretical basis for the design and installation of pipeline support system.
Rolling bearing fault diagnosis based on GMCP sparse enhanced signal decomposition and TFM
Authors: Xiao Lingjun , Fu Guozi 
Published: January 2021

Abstract
This paper presents a rolling bearing fault diagnosis method based on GMCP sparse enhancement signal decomposition and TFM. First, algorithm use the non-convex penalty function that not only increases the sparsity but also maintains the convexity of the cost function, that is, the characteristics of the generalized maximum minimum concave penalty (GMCP) to obtain a more accurate estimate. Then the time-frequency manifold (TFM) is used to process the signal. The advantage of TFM is its powerful noise reduction performance to reduce the noise of the signal. Finally, the fault frequency is extracted to realize the fault diagnosis of the rolling bearing. Through the analysis of experimental data, the excellent performance and application value of the proposed method in the diagnosis of rolling bearings are confirmed.
Cyclic characteristic analysis of 9-12%Cr steel at high temperature: experiment and model
Authors: Cao Yu , Cui Xin , Liu Chuan-huai , Pan Wei-guo , Ji Dong-Mei 
Published: January 2021

Abstract
Strain controlled creep-fatigue experiments of P92 steel with various strain amplitudes and holding time were conducted under 600 °C. The effect of strain amplitude on cyclic softening and stress relaxation behavior is negligible. However, the holding time has a greater impact on both. A new constitutive model within the framework of Chaboche model was developed by improving the nonlinear isotropic hardening law and kinematic hardening law with cyclic characteristic parameters. According to the experimental data, the constitutive model deduced above was applied on P92 steel, and the reliability of the model was also verified, in which the cycle characteristics of P92 steel under creep-fatigue was finely described.
Dynamic characteristic analysis of micro-hole gun drill based on ANSYS
Authors: zhibing Zhang , zhen Dong , xiao Zhang , dong Zhang 
Published: January 2021

Abstract
This paper takes different material properties of gun drill as the research object. ANSYS software is used in the dynamic characteristic analysis of gun drills of different materials. According to modal analysis theory and experiment, the natural frequency and vibration mode of the drill are obtained. The analysis results show that the cemented carbide gun drill after the cubic boron nitride treatment can better withstand bending vibration and torsion during the working process. It is found that the natural frequency of the treated cemented carbide gun drill is very different from that of other materials. The performance micro-hole gun drill provides a certain theoretical basis, and at the same time provides a reference for reducing the vibration and deformation of the gun drill.
Study on Movement & Occupant Injury Based On The New FAR SIDE Test
Authors: Yang Jialin , Zhang Bin , Zhu Haitao 
Published: January 2021

Abstract
The occupant movement and injury of the new Euro NCAP FAR SIDE test are taken as the research object, with the theoretical analysis, sled test and CAE model. The mathematical model of the far side dummy movement is established, and the main factors affecting the dummy’s displacement are analysed. The injury characteristics of the far side dummy under the sled test are obtained, and the main causes are studied. And finally, the optimization scheme of the FAR SIDE test is proposed.
Fault prevention and application of electrical automation equipment based on maintenance methods
Authors: Chen Pengfei 
Published: January 2021

Abstract
Electrical automation equipment can perform unified processing, research and development control of relevant information with the support of computers, effectively improving the safety and stability of equipment operation. However, electrical machinery equipment systems are susceptible to interference from a variety of factors during operation, and are prone to failures, which will seriously affect normal production. Based on this, this article conducts in-depth research on electrical automation equipment faults, and puts forward the main strategies of electrical automation equipment fault prevention and the maintenance methods of common faults. Aiming at the problem that the number of correct detection fault parameters in the traditional electrical automation equipment detection method is small and the accuracy of the detection result is affected, research on the field fault detection method of electrical automation equipment is carried out. The on-site fault information collection of electrical automation equipment, fault information fusion combined with information link technology, and on-site fault diagnosis methods of electrical automation equipment ensure the accuracy requirements of industrial production enterprises for fault detection results.
The Development of active capacitive voltage divider based on current transformer with compensation circuit
Authors: Shuai GAO , Shuo ZHANG , Zhanhe XU , Lin ZHAO , Xiaokun YANG 
Published: January 2021

Abstract
In order to solve the test of the frequency response characteristics of the DC voltage divider, this paper proposed an active voltage divider based on an electronically compensated current transformer. By setting different current transformer primary and secondary turns ratios, the voltage divider ratio could be changed. Through the three-winding design on a single iron core, the active compensation of the current transformer is realized and the linearity of the current transformer is improved obviously. The notch circuit is used to improve the measurement accuracy of the secondary current sampling circuit of the current transformer. Tests indicates that the voltage divider ratio varies with frequency not more than 20ppm, and phase shift is not more than 200μrad within 2500Hz.
Research on Wheelchair Design for the Disabled Elderly Based on QFD/TRIZ
Authors: Xi Zeng , Meng-di Yi 
Published: January 2021

Abstract

Objective This research proposes a wheelchair design method for the elderly with disabilities based on the combination of QFD theory and TRIZ theory to improve the satisfaction of the needs of elderly users and the feasibility of implementing related product technologies. Methods Starting from the needs of disabled elderly people, this research analyzes the shortcomings of QFD theory and TRIZ theory, and builds a framework model that combines TRIZ and QFD theory. Conclusion Through the redesign of the wheelchair, the various problems encountered by the disabled elderly in the process of using the wheelchair are solved, and their needs in the wheelchair are met. At the same time, through the analysis of the design process and results, the QFD/TRIZ integrated model is proposed and verified The feasibility of functional product design that can be applied to disabled elderly people.
Research on fault warning of marine diesel engine cooling system based on Deep Belief Network
Authors: Yao Qian , Liu Yunsheng , Guo Chaoyou , Ao Chenyang , Guan Tao , Xu Zhe 
Published: January 2021

Abstract
With the development of artificial intelligence and big data technology, deep learning has been applied to fault warning and diagnosis. In this paper, the typical failure modes of marine diesel engine cooling system are analyzed, and the characteristic parameters are selected. The fault warning model is established based on the deep belief neural network (DBN). The training and testing of the model are carried out by using the experiment data of a marine diesel engine. The results show that the deep belief neural network can effectively realize the fault warning of marine diesel engine cooling system.
Transformer fault diagnosis based on Improved Particle Swarm Optimization to support Vector Machine
Authors: Wu Yuhan , Sun Xianbo , Yang Pengfei , Wang Zhihao 
Published: January 2021

Abstract
Power transformer fault diagnosis exerts a vital part in the safe operation of power system. The PSO-SVM based on transformer fault diagnosis still has some shortcomings, such as slow convergence speed and easy to fall into local optimization. This dissertation proposes a transformer diagnosis method based on Improve Particle Swarm Optimization to support Vector Machine (MPSO-SVM). Adding disturbance to Particle swarm optimization (PSO) to disturb the position of such precocious particles, so as to get rid of local optimum. The case analysis represents that the diagnostic accuracy of MPSO-SVM is higher than that of PSO-SVM and Generalized Regression Neural Network (GRNN), and MPSO-SVM can effectively promote the fault diagnosis performance of transformer.