bluuebunny/crossref_metadata_2025_split huggingface dataset:
Real Time Energy Efficiency Operational Indicator (EEOI): Simulation Research from the Perspective of Life Cycle Assessment
Authors: Sun Chao , Wang Haiyan , Liu Chao , Zhao Ye 
Published: November 2020

Abstract
In order to evaluate the effect of CO2 emissions during ship building, maintenance and scrapping on energy efficiency, a real time EEOI definition was put forward, a life cycle assessment calculation framework was established, and a ship propulsion model with main diesel engine was built. A bulker carrier YUMING was taken as the case ship. CO2 emissions during ship building, maintenance, and scrapping were calculated. Main engine revolution and real time EEOI value with other parameters were obtained by simulating in different ship draft. The results show that life cycle assessment result will explicitly increase the real time EEOI value especially in lower engine speed and lower ship draft. It means that slow steaming may bring less environmental benefit if the life cycle assessment result is involved.
Research on the Integrated Electronic Signature Service Platform of Energy and Power
Authors: Li Lili , Liao Huimin , Xuan Jiaxing , Wang Huinan 
Published: November 2020

Abstract
In view of the many problems faced by the electronic signature service in the power industry, such as the increase of the media and types of storing digital certificates, the diversity of service modes of electronic signature, and the comprehensive support of the national secret algorithm, this paper proposes a scheme of the integrated electronic signature service platform. The platform adopts SDK interface to call its signature and verify signature, middleware and certificate service provide the interaction between application and digital certificate, realize the coexistence of multiple signature modes, meet the diversified electronic signature services of power users, improve the security of signature, and better serve the development of power business.
Analyzing the Limit Loading of Transmission Tower by Means of Finite Element Model
Authors: Jiang Ruixuan 
Published: November 2020

Abstract
The truss structure has been widely used in the area of high-voltage electric power transmission due to its limited mass and great stiffness. The carrying capacity should be known in advance before the practical usage of transmission tower. As a result, analyzing the limit loading of transmission tower can be significantly useful. In this research, a model of transmission tower structure has been established by a software named Abaqus 6.14. By imposing different loading forces to the finite element model, the locations of limit stress and displacement were figured out. It has shown that the truss structure in this article can bear no more than 198 kN of loading. Stresses meanly distribute in the two side of the tower body, decreasing with the increasing height. The limit stress shows up at the bottom and is at same side of loading force. Stress and displacement responses fit Hooke’s law perfectly, in other words, the proposed finite element model can be used in the design of transmission tower in practice.
Research on 3D Location Method of Underground Cable
Authors: Li Zhe , Nie Yixiong , Lin Xiuyue 
Published: November 2020

Abstract
Power cable is one of the most widely used electrical equipment in distribution system. Due to some historical reasons, the accidents such as cut or damage cables during construction often occur. In this paper, the calculation model of power cable power frequency magnetic field under different laying conditions is established. Based on the analysis of magnetic flux density around power cable, a positioning method of underground cable based on electromagnetic method is proposed. Three horizontal magnetic field sensors are used to locate the path of the cable,two vertical magnetic field sensors are used to locate the depth of the cable, so as to realize the three-dimensional positioning of the power cable. The simulation results of MATLAB show that the average absolute error of the method is about 0.03 m when the sensor array is 0.35 m around the cable in path positioning, and it can accurately locate the location of underground cable in depth location.
Research of Non-contact Compensation AC Voltage Regulator Based on Fuzzy Strategy
Authors: Li Weibo , Li Qi , Gao Jiajun , Zhao Xueting , Pan Junfeng 
Published: November 2020

Abstract
The non-contact compensation type AC voltage regulator possesses the advantages of small size, high efficiency, low cost, etc. due to its simple structure and convenient control, and is widely used in the field of AC voltage regulation technology field. However, the non-contact compensation type AC voltage regulator belongs to the class of voltage regulation. And the characteristics of the discontinuous system has the disadvantages of low control precision and weak system reliability. Fuzzy control strategy, through fuzzification and approximate reasoning, can solve the problem of such discontinuous control systems. Some research work shows that using the fuzzy membership strategy to optimize the switching rules of the control system can greatly improve the control precision of the voltage regulation, that is, can improve the regulation accuracy of the AC voltage regulator. The experiment results verify that the regulation accuracy of the system after optimizing the switching rule is 5-10 times pre-set, which proves the effectiveness of the improvement.
Research on Fault Monitoring Technology of Distribution Network Based on Fuzzy Association Rules Mining
Authors: Zhang Wei , Liu Yumin , Liu Zhu , Wang Shilin , Zhen Zijing , Li Yixin 
Published: November 2020

Abstract
In order to monitor the operation status of distribution network in real time and ensure the security and stability of distribution internet of things, a fault monitoring method based on fuzzy association rule mining was proposed. Fuzzy association rules mining was used to build the normal state parameter model of distribution network. The degree of interest index replaced the traditional index, aiming to improve the association degree between the rule parameters and form an effective expert knowledge base. According to the rules in the expert knowledge base, the normal state data of distribution network were obtained by fuzzy reasoning. Further, the state similarity function between the monitoring states and the normal states was used as the state judgement index. When the similarity is lower than the threshold, the fault alert should be triggered. Taking the single-phase ground fault data of distribution network simulated by MATLAB Simulink as an example, it was verified that the proposed method can effectively monitor the single-phase ground fault.
Torque Control of DC Torque Motor Based on Expert PID
Authors: Xu Xinyu , Li Dazhai 
Published: November 2020

AbstractTorque motor is a kind of special motor with a large number of poles, which can continue to operate at low speed or even when the rotor cannot rotate (that is, the rotor cannot rotate) without causing damage to the motor. In most cases, in order to meet the needs of industrial production and life, we need to torque motor for high-precision torque control. In this paper, we applied the expert PID control method to torque control. MATLAB simulation and experimental results show that the expert PID control has achieved good results in torque control of torque motor.
Wireless Control System Design for Coal Transportation Plant Based on Two-part Tariff System
Authors: Xue Qing , Du Xinhui , Qiao Zuojiang , Wang Ze 
Published: November 2020

Abstract
Under the current tariff policy, large industrial users, such as coal transportation companies, are typically charged a two-part tariff. This tariff policy limits the maximum value of the average load every fifteen minutes for a month, with an additional charge for electricity consumption when the threshold is exceeded. The article proposes a wireless monitoring and control system for coal transportation plants in response to this policy. First of all, the backup power supply and control circuit were added to the electric equipment of the coal transportation plant. Then build a ZigBee wireless sensor network, terminal and relay connected, coordinator and PLC connected. Finally, when the sensor monitors the actual electricity consumption is about to reach the maximum value set in the PLC, PLC sends a command through the ZigBee to control the relay action and switch to the backup power supply. The experimental results show that the wireless control system has a clear structure and effective strategy, which can reduce the basic electricity cost of the coal transportation plant.
Research and Implementation of Constant Pressure Control with Electro-pneumatic Proportional Valve
Authors: Zhao Tangchun , Huang Dunhua 
Published: November 2020

Abstract
In this paper, the implementation method of “constant pressure control” in industrial production is proposed. Through experiments, the feasibility of using pneumatic proportional and open-loop control technology is proved. The control system has the characteristics of high precision, convenient debugging and good economy, and has high practicability.
A Backstepping Control of Plant Protection Boom System Considering Input Constraints
Authors: Li Shujiang , Wu Yue 
Published: November 2020

Abstract
Aiming at the plant protection machine boom system with input constraints, uncertain disturbances and various nonlinear factors, a backstepping controller considering input saturation uncertain interference is proposed. The method introduces an auxiliary system, realizes the compensation of control saturation by designing new error variables, and solves the amplitude constraint problem of the control input. By constructing the appropriate Lyapunov function, the stability of the planter boom system is guaranteed. The simulation results show that the designed controller has good tracking performance and robustness.
Application of Remote Control Technology in Gas Drainage Drilling Rig in Coal Mine
Authors: Wang Qingfeng , Xin Dezhong , Chen Hang 
Published: November 2020

Abstract
In view of the potential safety hazards such as gas-shot, gas-outburst and personal injury in the construction of gas drainage and drilling in coal mine, the technology and equipment of controlling drilling rig far away from the drilling field are studied to improve the automation level[1]. This technology can realize the “one-key” mode to control the drilling machine to automatically up and down the drill pipe, automatically drill and back out, reduce the number of field operators, and play a positive role in ensuring the safety of gas extraction drilling personnel and reducing personnel and increasing efficiency.
Modeling and Simulation of K2x8 Five Axis Machine Tool Based on VERICUT 8.0
Authors: Ye Xuanlin , Yin Jingjie , Cai Jin , Xu Lianjiang 
Published: November 2020

Abstract
Taking the VERICUT 8.0 software as the platform and k2x8 five axis machine as an example, this paper expounds the method and steps of constructing non orthogonal five axis machine simulation machine. The key technologies such as the modeling of machine tool, the construction of machine tool kinematic chain, collision detection and stroke setting, the configuration of control system and simulation are introduced in detail. And the impeller is used as a sample for numerical control simulation processing, which verifies the correctness and effectiveness of the simulation platform, and provides a useful reference for other five axis machine simulation platform configuration.
Automatic Detection of the Underwater Stationary Artificial Torpedo-shaped Target Based on SAS Image
Authors: Li Ke , Wang Xichen , Dai Yating , Zhou Jincong , tong Yishuo , Jiang Wei 
Published: November 2020

Abstract
Aiming at the problems of speckle noise, seafloor background scattering interference and lack of texture feature in SAS images, an underwater torpedo-shaped artificial target detection algorithm based on Meanshift filtering and Ostu algorithm was proposed. Firstly, based on the image characteristics, the Meanshift filtering algorithm is used to confirm a appropriate threshold to achieve a smoothing effect, and eliminate the strong background speckle noise. Secondly, Ostu algorithm is used to perform binarization according to the histogram statistical information after image gray-scale. Finally, the Region growth method is used to find and eliminate the large and unrelated white areas, meanwhile, fill the holes in the target to obtain a relatively complete target contour. The experimental results show that the algorithm is simple, has a strong ability to overcome the background noise. The automatic detection of the target is accurate. The algorithm is stable with a strong engineering value.
Study on a Fast and Accurate Control Loading Device
Authors: Di Jianhui , Xie Xianming , Zhou Yu , Zhou Jiangang 
Published: November 2020

Abstract
A fast accurate control loading device is studied, which is mainly used by the metrological department for calibration and verification of motor vehicle weighing instrument and overload system. By way of control algorithm and the servo motor that drives lifting mechanism, the device is employed to perform a fast and accurate calibration and verification of weighing equipments, such as motor vehicle axle (wheel) weighing instrument and curb weight tester, resulting in higher working efficiency and lesser labor intensity.
A Power De-coupling Control Strategy for MMC-HVDC System
Authors: Zhang Mingguang , Chang Jianhua , Yang Chengming , Liu Zilin 
Published: November 2020

Abstract
Modular multilevel converter (MMC) has a wide range of applications in the field of HVDC. However, some of the electricity in MMC is coupled, which makes the design of control system more difficult and have a negative impact on the stable operation of the system. This paper puts forward a strategy to eliminate the coupling control, this method compensates the current cross-coupling terms of the d-axis and the q-axis in the dq coordinate system, SOGI(Second Order Generalized Integrator) and Q-PR(Quasi-PR) controller are used to accurately control the double frequency circulation in the internal unbalanced current, the coupling caused by the internal unbalance current and the sub-capacitor module voltage is compensated in the three-phase coordinate system. Finally, the simulation verification is carried out in PSCAD, which is compared with the traditional control method to verify that the proposed method can achieve complete power decoupling.
Virtual Reality Combat Trainer
Authors: Zhuang Changkuan , Zhuang Yuxin , Yang Liu Sindy 
Published: November 2020

Abstract
This research reveals a system that can support combat training and games, in order to enable the combat enthusiasts who have not been trained professionally to carry out actual combat training and experience. On the basis of ensuring the safety, this study describes the virtual combat trainer from the perspective of enhancing the actual combat experience. It also describes the meaning, function, technical principle, technical characteristics and innovation of the product. This research is mainly used in martial arts fighting training, competition and other aspects.
Integrated Disturbance Observer Attitude Controller for a Satellite with Rotating Solar Array
Authors: Wang Haoguang , Wu Guoqiang , Bai Tao 
Published: November 2020

Abstract
In this paper, the response of on-orbit satellite attitude under the influence of flexible satellite’s solar array rotation is analysed, and a robust attitude control method based on disturbance observer is proposed. The disturbance torque is estimated and compensated feedforward. The simulation results show that the proposed control method can effectively estimate the external disturbance, and significantly improve the attitude control accuracy and stability.
Design Method of Local Control System Centred on IOT Technology
Authors: Liu Jianbao , Zhou Feng , Qin Xinxin 
Published: November 2020

Abstract
For realizing the comprehensive monitoring of the ships and warships, the internet of things (i.e., IOT) technology is adopted by the local control system, which consists of the sensing layer, the transmission layer and the whole ship monitoring layer. First, state data is collected by various high-precision sensors of the sensing layer, and then transmitted to the entire ship monitoring layer via the entire ship transport layer based on Modbus TCP/IP design. The local control system is based on the STM32 MCU. It integrates functions such as signal acquisition, Ethernet, CAN bus communication, interactive display, and fault diagnosis. The effectiveness, practicability and flexibility of the on-site control system were verified by a ship propulsion experimental system. The on-site results can provide and verify big data technical support for different regions, regulatory agencies and equipment maintenance of the whole ship.
Fixed-time Adaptive Control for A New Three-dimensional Nonlinear System with Circular Equilibrium
Authors: Wang Yaoyu , Liu Ling , Cai Xinshan , Liu Chongxin , Wang Yan 
Published: November 2020

Abstract
In this paper, we proposed a new nonlinear chaotic oscillator. The model of the system is given through a predefined form. Its unique property lies in the circle-shaped equilibrium. Both analysis and simulations are presented. In particular, the stability of the neighbourhood of the equilibrium point is analysed in terms of theoretical derivation and dynamic behaviour. Moreover than that, a robust control method of a category of three-dimensional chaotic systems is designed. And the final simulation results proved the effectiveness of the controllers.
A Classification Algorithm of Fish Feeding Behavior for Automatic Bait Feeding Control
Authors: Zhang Jialin , Cen Feng , Xu Lihong 
Published: November 2020

Abstract
In aquaculture, automatic feeding control of fish can effectively improve production efficiency. However, most automatic feeding devices are open-loop control because of lack of information on fish feeding behavior, which could lead to a large amount of bait waste. To address this problem a novel video classification algorithm based on an inter-frame relationship Bayesian estimation network(IRBEN) is proposed in this paper, which provided prior knowledge for automatic feeding control of fish. The IRBEN first employs a VAE encoder to convert the frames of a video clip into multivariate Gaussian distributions(MGDs). Then, two fully connected networks, one is trained on the MGDs associated with the fish eating video clips and the other on the MGDs associated with the fish noneating video clips, are employed to predict the MGDs of the frame after an interval from the MGD of the current frame. The classification is conducted by finding the fully connected network achieving smaller KL distance between the predicted MGD and the actual MGD. The experimental results show that the IRBEN achieves the classification accuracy of 97.5%.
Experimental Study on Braking Performance of an AT Integrated Hydraulic Retarder of HPT Series
Authors: Song Zhenchuan , Li Huiyuan , Xu Ming 
Published: November 2020

Abstract
In this paper, the hydraulic working principle of an AT integrated hydraulic retarder of HPT series is introduced, and the braking performance is tested on a bench. The braking characteristics under different solenoid valve currents and different retarder rotational speeds are obtained and analyzed. According to the test results, the optimization method of braking characteristics in high speed section is studied.
Instantaneous Dynamic Deformation Monitoring on Jiaozhou Bay Cross-sea Bridge with LVR-GPS Technology
Authors: Zhao Yongqian , Yu Chengxin 
Published: November 2020

Abstract
Intend to get and process the monitoring data of the instantaneous dynamic deformation of Jiaozhou bay cross-sea bridge sufficiently, the paper makes application of the long visual range and the global positioning system (LVR-GPS) monitoring model in the experiment. The deformation monitoring experiment is conducted with horizontal distance exceed more than 2.2 kilometers. With the LVR-GPS model we can monitor multiple points, draw real-time curve image, and obtain the synchronous results. Thus, we can provide a creative deformation monitoring technology on the similar large-scale bridges.
Gesture Recognition Method with Illumination Robustness for Wheelchairs
Authors: Zhang Bin , Luo Xianyun , Gao Qiang 
Published: November 2020

Abstract
Disabled elderly people have to rely on wheelchair life. And the wheelchairs are used in daily life with different illumination conditions. This paper proposes a hand gesture recognition method to control wheelchairs based on dynamic colour clustering. As dynamic clustering skin detection algorithm is used, the gesture recognition accuracy is improved. Using skin detection, arm removal and polygon fitting methods, the gesture images collected by a Kinect V2, are recognized as control commands to drive the wheelchair. Experiments show that the proposed method can be applied to different illumination conditions with better recognition accuracy.
Automatic Target Recognition Technology of SAR Images Based on 2DPCA+PNN
Authors: Xu Ruiming , Li Dong 
Published: November 2020

Abstract
In this paper, the SAR image in MSTAR data is used as the research object. The target recognition algorithm based on probabilistic neural network (PNN) is mainly studied. It includes three parts: SAR image preprocessing, feature extraction, classification and recognition. Lee filtering and adaptive threshold method are used to filter the speckle noise effectively, and the 2DPCA principal component analysis method is used to reduce the dimension of the image and obtain the 10 dimensional image features. The recognition part is input to the PNN training test with the acquired feature vectors, and the 85.17% correct recognition rate is obtained, and the target classification and recognition of the SAR image is completed.
Numerical Simulation of Fluid Carrying Pollutant Particles Erosion in Elbow Pipe Is Carried out by COMSOL
Authors: Yang Shuren , Zhang Min , Wang Xingang , Wang Hongxi 
Published: November 2020

Abstract
With the development of Marine energy to the deep and ultra-deep-water field, the severe environment of high temperature and high pressure in the engineering background makes the problem of flow security in oil and gas transportation system more serious and prominent. For this part of the underwater production and processing system, more stringent requirements are put forward. In order to study the erosion of fluid pipelines such as oil and natural gas, the COMSOL (A large-scale advanced numerical simulation software) finite element model was used. Under the condition of different flow parameters, the erosion trajectory of solid particles in the pipeline and the erosion failure rule of the bend are obtained. In this paper, the erosion wear rate of 90° pipe elbow is calculated, and three different erosion models are compared.