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18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Cao, Danyang Lyu, Zhanggang Liu, Zhong Yue, Haosong Wu, Xingming Chen, Weihai Beihang University School of Automation Science and Electrical Engineering Beijing China Beijing Aerospace Automatic Control Institute Beijing China Beihang University Hangzhou Innovation Institute Hangzhou China

ISBN: (纸本)9798350312201

The spatiotemporal constraints provided by loop closure detection play a crucial role in the simultaneous localization and mapping of robots. Traditional methods based on key points information are vulnerable to point-level feature instability. In this paper, a loop closure detection method based on robust geometry of the objects extracted through semantics of point cloud is proposed. Our method is based on the fact that point cloud can robustly describe geometric properties, and the extracted local features are extremely robust and invariant to rotation, thus achieving remarkable results in loop closure detection. We conduct experiments on the KITTI odometry dataset and confirm the effectiveness of our method. © 2023 IEEE.

关键词： Semantics

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DYNAMIC COUPLING ANALYSIS OF OIL FILM IN SLIPPER PAIR OF AXIAL PISTON PUMP

DYNAMIC COUPLING ANALYSIS OF OIL FILM IN SLIPPER PAIR OF AXI...

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2024 CSAA/IET International Conference on Aircraft Utility Systems, AUS 2024

作者： Zhang, Yunhao Chen, Rentong Zhang, Chao Wangia, Shaoping Han, Hailiang School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China AVIC Xi'an Flight Automatic Control Research Institute Xi'an710065 China

In this paper, the dynamic coupling characteristics of the oil film of the slipper pair of the axial piston pump are analysed to achieve optimize the performance of the pump and prolong its *** oil chamber pressure model of the slipper is first established to obtain the boundary conditions of the lubricated surface of the slippers. Then the multi-field coupling model is established based on Reynolds *** finite difference and Newton-Raphson methods were utilized to simulate the fluctuating oil film thickness. The findings indicate that the oil film's temperature peaks under high pressure and dips under low pressure, with a more pronounced tilt in the latter. These numerical insights shed light on the complex interactions within the slipper pair's oil film dynamics. © The Institution of engineering & Technology 2024.

关键词： Newton-Raphson method

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Electric Vehicles Modeling: A Review 15

Electric Vehicles Modeling: A Review

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15th IEEE International Conference on Industry Applications, INDUSCON 2023

作者： de Oliveira, Victor Manuel Riva dos Remédios, Vinícius Ferreira Donadel, Clainer Bravin dos Santos, Walbermark Marques Có, Márcio Almeida de Melo, Vinícius Secchin Nunes, Reginaldo Barbosa Electrical Engineering Department Federal Institute of Espírito Santo Vitória Brazil Control and Automation Eng Dept. Federal Institute of Espírito Serra Santo Brazil

ISBN: (纸本)9798350314182

The increasing concern about climate change has been leading researches in many areas to investigate solutions for this issue. An emerging subject related to it is electric vehicles (EV). Although it is an important topic, there is still a lack of review papers about EVs modeling. In this context, this paper aims to bring a review about EV modeling to fulfill this gap. A wide bibliography review is made to cover different kinds of EVs modeling, in many aspects. As a conclusion, in some areas, authors do not diverge from each other, while in others may exist a large range of different ways to model the EVs. In this case, researchers should choose the modeling that fits the best for their research, which may vary in simplicity and computational effort. © 2023 IEEE.

关键词： Battery Electric Vehicles Modeling Simulation

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Design and optimization of a Slotless PMSM with Hexagon Distributed FPC Winding 26

Design and optimization of a Slotless PMSM with Hexagon Dist...

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26th International Conference on Electrical Machines and Systems, ICEMS 2023

作者： Zhao, Jing Wang, You Deng, Lufan Yang, Lei Liu, Xiangdong He, Wei School of Automation Beijing Institute of Technology Beijing China Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms Beijing Institute of Control Engineering Beijing China

ISBN: (纸本)9798350317589

In order to improve the power density of slotless permanent magnet synchronous motor (PMSM) and reduce the process difficulty, a slotless PMSM with hexagon distributed flexible printed circuit board (FPC) winding is studied in this paper. The effects of different pole-slot matching and stator and rotor parameters on the electromagnetic performance are studied. Two multi-objective optimization algorithms, genetic algorithm (GA) and particle swarm optimization (PSO), are used to optimize the winding parameters of FPC. Under the premise that the electromagnetic torque meets requirements, the loss of the motor is effectively reduced and the efficiency of the motor is improved. A prototype with 6 poles and 18 slots is manufactured, and the electromagnetic performances are tested to verify the correctness of the theoretical analysis. © 2023 IEEE.

关键词： Multiobjective optimization

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Comparison of nonlinear modeling methods for the composite rubber clamp

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 763-778页

作者： Yiming CAO Hui MA Xumin GUO Bingfeng ZHAO Hui LI Xin WANG Bing WANG School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion Systems of Ministry of Education of China Northeastern UniversityShenyang 110819China AVIC Shenyang Engine Design Institute Shenyang 110013China Dalian Mengyu Machinery Co. Ltd.Dalian 116317Liaoning ProvinceChina

The cubic stiffness force model(CSFM)and Bouc-Wen model(BWM)are introduced and compared *** unknown coefficients of the nonlinear models are identified by the genetic algorithm combined with *** fitting the identified nonlinear coefficients under different excitation amplitudes,the nonlinear vibration responses of the system are *** results show that the accuracy of the BWM is higher than that of the CSFM,especially in the non-resonant ***,the optimization time of the BWM is longer than that of the CSFM.

关键词： pipeline system nonlinear clamp model composite rubber clamp amplitude-dependent characteristic vibration response experiment

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Distributed Sensor FD for Sensor Networks 32

Distributed Sensor FD for Sensor Networks

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32nd IEEE International Symposium on Industrial Electronics, ISIE 2023

作者： Zhang, Jiarui Ding, Steven X. Li, Linlin University of Duisburg-Essen Institute for Automatic Control and Complex Systems Duisburg Germany University of Science and Technology Beijing School of Automation and Electrical Engineering Beijing China

ISBN: (纸本)9798350399714

The main objective of this paper is to develop a distributed sensor fault detection (FD) approach for sensor networks in the presence of noise and transmission time of information exchange. To be specific, the approach optimizes the performance of FD by minimizing the detection uncertainty and the online implementation of the proposed method is in a distributed and recursive manner. Finally, a numerical example is illustrated to show that the distributed approach can successfully and efficiently accomplish the FD task. © 2023 IEEE.

关键词： Sensor networks

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Study on Landslide Susceptibility Evaluation Based on Improved Multivariable Weighted Model: A Case Study of Lushan County, China 3

Study on Landslide Susceptibility Evaluation Based on Improv...

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3rd IEEE International Conference on Software engineering and Artificial Intelligence, SEAI 2023

作者： Zhao, Li Duan, Gonghao Wuhan Institute of Technology School of Computer Science and Engineering Wuhan China Automation for Complex Systems Hubei Key Laboratory of Advanced Control and Intelligent Wuhan China

ISBN: (纸本)9798350337952

The evaluation of regional geological hazard susceptibility is of great significance to the prevention and control of geological hazard. In this paper, the "4-20"Lushan earthquake disaster area as the research area, combined with GIS and characteristics of the research area, through correlation analysis, selected 9 influencing factors as the evaluation factors. The study was conducted using a weighted information volume-logistic regression model (WI-LR). The results were classified into five sensitivity levels: very low, low, medium, high and very high. The results show that the landslide prone areas in Lushan County are concentrated in the area below the middle of the county seat, mostly near rivers, faults and areas with peak acceleration greater than 0.4. Among them, WI-LR model (AUC=0.918) > deterministic factor model (CF =0.908) > weighted information quantity model (WI) (AUC=0.896) > information quantity model I (AUC=0.853) > information quantity logistic regression model I-LR (AUC=0.799). It indicates that WI-LR model has high evaluation accuracy. © 2023 IEEE.

关键词： Hazards

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Distributed bearing-based formation control of unmanned aerial vehicle swarm via global orientation estimation

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Chinese Journal of Aeronautics 2022年第1期35卷 44-58页

作者： Yuwei ZHANG Xingjian WANG Shaoping WANG Xinyu TIAN A School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Science and Technology on Aircraft Control Laboratory Beihang UniversityBeijing 100191China Ningbo Institute of Technology Beihang UniversityNingbo 315800China

Most existing formation control approaches for Unmanned Aerial Vehicle(UAV)swarm assume that global position and global coordinate frame are directly available for each *** extend the application domain,this paper proposes a distributed bearing-based formation control scheme,without any reliance on global position or global coordinate *** interactions among UAVs are described by a directed topology with two-leader *** address the issue of unavailable global coordinate frame,we first present a distributed orientation estimation law for each UAV to determine its orientation under the coordinate frame of the first *** on the orientation estimation,we then design a bearing-based formation control law to globally asymptotically track target moving ***,simulation results are provided to validate the proposed method,which show that the translation,scale and orientation of the formation can be flexibly controlled via two leaders.

关键词： Bearing measurement Formation control Global orientation estimation Two-leader structure Unmanned aerial vehicles

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Sensitivity Analysis of Thermal Runaway Side Reaction of Lithium Batteries Based on Morris Method 9

Sensitivity Analysis of Thermal Runaway Side Reaction of Lit...

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9th International Symposium on System Security, Safety, and Reliability, ISSSR 2023

作者： Man, Zhiyi Wang, Shaoping Zhang, Chao Zhu, Yun Beihang University School of Automation Science and Electrical Engineering Beijing100191 China AECC Aero-Engine Control System Institute Jiangsu Wuxi214100 China

ISBN: (纸本)9798350302479

In the field of electric vehicles, the safety of power lithium-ion batteries is a socially important issue, and the study of thermal runaway of lithium batteries is now gradually becoming more in-depth. In this paper, the output parameters are up-dimensioned. Using a global sensitivity analysis method based on the Moms screening method, the influence of 11 parameters such as volume of the cell(vBt), mass of the cell(mBt) and electrolyte concentration (W_e) on the thermal runaway process of Li-ion batteries is analyzed, and the variation of 10 variables such as temperature(T) and carbon dioxide gas (CO2) produced in the thermal runaway side reaction heat generation process and chemical reaction gas generation process over time is investigated under the influence of the parameter factors. In the study, the sensitivity of the parameters over a time interval is investigated in the rising dimension of the time domain. The results show that the overall effect of the parameters on the thermal process;for the output variables of the thermal process, they are mainly affected by the mass of the cell (m_Bt), the thickness of the SEI film (t_sei) and the specific heat capacity of the cell(Cp_Bt), while the chemical process is not significantly affected by the different parameters;among all the parameters, the volume (V_Bt) of the cell interacts most strongly with the other parameters for all the output variables. Finally, the results of the sensitivity analysis of the thermal runaway side reactions of the battery will be applied to the subsequent 3D simulation study. © 2023 IEEE.

关键词： Lithium-ion batteries

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PLC-Based Design of Oil Tank Drainage control and Monitoring System 42

PLC-Based Design of Oil Tank Drainage Control and Monitoring...

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42nd Chinese control Conference, CCC 2023

作者： Weikang, Wang Shaolin, Hu Ye, Ke Automation School Guangdong University of Petrochemical Technology Guangdong Maoming China School of Information and Control Engineering Jilin Institute of Chemical Technology Jilin Jilin China

ISBN: (纸本)9789887581543

Since in the process of crude oil exploitation, water inevitably is discharged into the crude oil storage tank, and moisture in crude oil can impair storage, transportation, and production. Therefore, crude oil should be dehydrated before entering the refinery and other further processing, and the drainage of the crude oil storage tank is a key link in the crude oil treatment. In this paper, a dehydration scheme and control logic of a crude oil storage tank is designed, and OLE for Process control (OPC)technology is used to realize the communication between the Programmable Logic controller (PLC) and the host computer. Based on Windows control Center (WINCC), a host computer monitoring system is Established to monitor the liquid medium in the buffer tank and in the tubes before and after the buffer tank in real-time. The dehydration process of the crude oil storage tank is completed by logical operation. This system has the advantages of high precision, convenient control, practicality, and safe and reliable work. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Crude oil

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