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4th International Conference on Internet of Things and Smart City, IoTSC 2024

作者： Zhang, Yufeng Wang, Yanyang Wu, Changliang Li, Lei Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province Xihua University Sichuan Chengdu610039 China Provincial Engineering Research Center for New Energy Vehicle Intelligent Control and Simulation Test Technology of Sichuan Xihua University Sichuan Chengdu610039 China

ISBN: (纸本)9781510681767

In urban arterial intersections, unreasonable signal coordination can lead to a decrease in the efficiency of arterial traffic flow and an increase in vehicle start-stop frequencies. Phase difference is a crucial parameter for arterial signal coordination, as the phase difference between intersections affects the delay experienced by traffic flow. This paper focuses on the phase difference of consecutive intersections and proposes an optimization algorithm for arterial phase difference. It introduces a utility function based on the correlation analysis of multiple phase differences, utilizes neural networks to describe the relationship between phase difference and arterial delay, and employs genetic algorithms to find the optimal solution for the model. Simulation results demonstrate that the proposed arterial phase difference optimization algorithm outperforms traditional uncontrolled and induction-controlled methods, yielding superior signal control effectiveness. © 2024 SPIE.

关键词： Genetic algorithms

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Simulation analysis on magnetic field of internal linear motor in the micro compressor 5

Simulation analysis on magnetic field of internal linear mot...

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5th IEEE Advanced Information Management, Communicates, Electronic and Automation control Conference, IMCEC 2022

作者： Zhao, Yibo Li, Chenyun Shanghai Institute of Measurement and Testing Technology Shanghai201203 China Shanghai Key Laboratory of Online Test and Control Technology Shanghai201203 China

ISBN: (纸本)9781665479677

In this paper, the magnetic field of internal linear motor in the micro compressor is simulated. Through finite element analysis and calculation of the magnetic flux density within the internal air gap of the micro linear motor under the conditions of different air gap width, air gap thickness, magnetic steel thickness and overall radial size of the motor, it is found that the initial setting size is the best size, which can not only meet the premise that the magnetic induction strength is unchanged, but also ensure uniform magnetic field distribution, The size and quality of the compressor are minimized. On the other hand, this study also verifies the rationality of the scaling principle for miniaturization. © 2022 IEEE.

关键词： Linear motors

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Source-Configured Microwave Plasmonic Vortices Based on Single Meta-Particle

Source-Configured Microwave Plasmonic Vortices Based on Sing...

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2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： Kong, Xianglin Zhao, Lei Shen, Xiaopeng Xu, Yinfang School of Information and Control Engineering China School of Materials Science and Physics China University Mining and Technology Xuzhou China National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematics Beijing China

ISBN: (纸本)9781733509657

In this paper, generation of plasmonic vortices with tunable topologic charges is proposed in the microwave regime. Tunable vortices with topologic charges of 0, +1 and -1 can be configured by illuminating incident plane waves with linearly polarization (LP), left-circularly polarization (LHCP) and right-circularly polarization (RHCP) on a single meta-particle, respectively. A spiral meta-particle operating at 2.94 GHz is designed, fabricated and measured to demonstrate the source-configured characteristics. The results showed that simulation and test are consistent with the theoretical ones. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Vortex flow

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Characterization and prediction of tailpipe ammonia emissions from in-use China 5/6 light-duty gasoline vehicles

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 71-81页

作者： Lewei Zeng Fengbin Wang Shupei Xiao Xuan Zheng Xintong Li Qiyuan Xie Xiaoyang Yu Cheng Huang Qingyao Hu Yan You Ye Wu College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China State Key Laboratory of Engines Tianjin UniversityTianjin 300072China China Automotive Technology and Research Center Co.Ltd. Tianjin 300300China CATARC Automotive Test Center(Guangzhou)Co.Ltd. Guangzhou 511300China State Environmental Protection Key Laboratory of Cause and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research InstituteMacao University of Science and TechnologyMacao SAR 999078China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing 100084China

On-road tailpipe ammonia (NH3) emissions contribute to urban secondary organic aerosol formation and have direct or indirect adverse impacts on the environment and human health. To understand the tailpipe NH3 emission characteristics, we performed comprehensive chassis dynamometer measurements of NH3 emission from two China 5 and two China 6 light-duty gasoline vehicles (LDGVs) equipped with three-way catalytic converters (TWCs). The results showed that the distance-based emission factors (EFs) were 12.72 ± 2.68 and 3.18 ± 1.37 mg/km for China 5 and China 6 LDGVs, respectively. Upgrades in emission standards were associated with a reduction in tailpipe NH3 emission. In addition, high NH3 EFs were observed during the engine warm-up period in cold-start cases owing to the intensive emissions of incomplete combustion products and suitable catalytic temperature in the TWCs. Notably, based on the instantaneous NH3 emission rate, distinct NH3–emitting events were detected under high/extra high velocity or rapid acceleration. Furthermore, NH3 emission rates correlated well with engine speed, vehicle specific power, and modified combustion efficiency, which were more easily accessible. These strong correlations were applied to reproduce NH3 emissions from China 5/6 LDGVs. The predicted NH3 EFs under different dynamometer and real-world cycles agreed well with existing measurement and prediction results, revealing that the NH3 EFs of LDGVs in urban routes were within 8.55–11.62 mg/km. The results presented here substantially contribute to improving the NH3 emission inventory for LDGVs and predicting on-road NH3 emissions in China.

关键词： NH3 instantaneous emissions Catalytic temperature Vehicle specific power Combustion efficiency Emission prediction

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test and Analysis of Compression Wave Sound Velocity Measurement in Ice by Direct Method

Test and Analysis of Compression Wave Sound Velocity Measure...

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2021 OES China Ocean Acoustics, COA 2021

作者： Jin, Bai Lianhui, Jia Chunxia, Meng Fengrui, Bai Science and Technology on Underwater Test and Control Laboratory Dalian China Dalian Neusoft University of Information Dalian China

ISBN: (纸本)9781728181905

The sound velocity in ice is of great significance to the acoustic propagation characteristics of ocean channels under ice cover and the acoustic characteristics of underwater targets. Freshwater ice has a uniform crystal structure under normal conditions. The freezing process of sea ice is more complicated compared to fresh water ice. The sea ice contains a lot of bubbles, brine, solid particles and other impurities. Due to the large difference in the structure and composition of ice in different states, it is very different from the common sound transmission media in the past. Therefore, in order to accurately describe the acoustic propagation characteristics of the ocean channel under the ice cover, it is necessary to measure the longitudinal sound velocity in the ice accurately. A direct method for measuring the speed of longitudinal waves in ice is studied in this paper. The propagation time of high-frequency pulses in the ice is used in this research to determine the speed of longitudinal waves. For the same piece of ice, the method of averaging multiple measurements was used to reduce the measurement error. Six tests were performed on typical ice with different structural characteristics. The six tests were the fresh water in Songhua Lake area of Jilin Province in 2019, the high mud content sea ice in the coastal area of Bohai Bay in 2020, the low mud content sea ice in Liaodong Bay area in 2021, the artificial quick-frozen sea ice and fresh water ice at -20°C, and the summer Arctic sea ice obtained in the eleventh Arctic scientific survey in 2020. The sound velocity of longitudinal waves in ice was measured at 12kHz, 25kHz, 50kHz, 75kHz, and 100kHz. The acoustic properties of ice are determined by its own state. The measurement results have certain fluctuations, because the test results were closely related to the sample test environment and test process. The measurement results of longitudinal wave sound velocity were described by the measurement mean value

关键词： underwater acoustics

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FAILURE DATA ANALYSIS FOR TRACKED VEHICLES UNDER DIFFERENT ENVIRONMENTS USING PRINCIPAL COMPONENT ANALYSIS 14

FAILURE DATA ANALYSIS FOR TRACKED VEHICLES UNDER DIFFERENT E...

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14th International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, QR2MSE 2024

作者： Hu, Junming Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province Xihua University Chengdu China Provincial Engineering Research Center for New Energy Vehicle Intelligent Control and Simulation Test Technology of Sichuan Xihua University Chengdu China School of Automobile and Transportation Xihua University Chengdu China

ISBN: (纸本)9781837242672

Enhancing vehicle reliability is of paramount importance during the research and development phase, with reliability growth testing playing a crucial role in this process. Traditional reliability growth testing often treats vehicle failures under varying environmental conditions with uniform significance, overlooking the specific impacts these conditions may have on failure occurrence. This paper aims to illuminate the influence of environmental factors on vehicle failures. To explore the relationship between vehicle failures and the contexts in which they occur, Principal Component Analysis (PCA) was employed. The findings indicate that a diversified testing approach, which assigns different levels of importance to various testing scenarios, is recommended. This approach is likely to yield a more nuanced understanding of vehicle performance and foster a more effective strategy for enhancing reliability. © The Institution of Engineering & technology 2024.

关键词： FAILURE DATA ANALYSIS PRINCIPAL COMPONENT ANALYSIS RELIABILITY GROWTH testING TRACKED VEHICLE

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Health prognostics framework of lithium-ion batteries for real-world electric vehicles based on charging data 10

Health prognostics framework of lithium-ion batteries for re...

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10th IEEE International Power Electronics and Motion control Conference, IPEMC 2024 ECCE Asia

作者： Yang, Yi Wu, Xiaohua Yang, Gang Yan, Ji Xihua University Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province School of Automobile and Transportation Chengdu610039 China Xihua University Sichuan Eng. Res. Ctr. of Intelligent Control and Simulation Test Technology for New Energy Vehicles Chengdu610039 China

ISBN: (纸本)9798350351330

Lithium-ion batteries' state of health (SOH) is critical to safely managing electric vehicles (EVs). This paper proposes a battery health prognostic framework based on charging data for real-world EVs. First, the capacity of the battery is calculated using the ampere-hour integration method based on historical charging data. The capacity trend is fitted using the locally weighted linear regression (LWLR) algorithm and the effect of charging depth on the capacity calculation results is eliminated. Then, the features strongly correlated with battery capacity are extracted using Pearson correlation analysis (PCA). Finally, Gaussian process regression (GPR) is employed to establish the capacity estimation model of lithium-ion batteries. The effectiveness and accuracy of the proposed method are validated on EVs from different regions. The results indicate that the mean absolute error (MAE) and the root mean square error (RMSE) of the estimated capacity on the test set are both less than 0.5. © 2024 IEEE.

关键词： Lithium-ion batteries

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Hybrid Energy Management Strategy for Fuel Cell Ships Considering the Sailing Conditions 43

Hybrid Energy Management Strategy for Fuel Cell Ships Consid...

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43rd Chinese control Conference, CCC 2024

作者： Wang, Ning Li, Zhiqiang Dalian Maritime University School of Marine Engineering Dalian116026 China Dalian Key Laboratory of Green Power Control and Test for Intelligent Ships Dalian116026 China State Key Laboratory of Maritime Technology and Safety Dalian116026 China Dalian Maritime University School of Marine Electrical Engineering Dalian116026 China

ISBN: (纸本)9789887581581

There exist long-standing requirements of energy saving and stable operation for fuel cell ship power system. In this paper, a rule-optimization fusion energy management method based on the discrimination of ship operating conditions is proposed. Specifically, the ship sailing conditions are analyzed and the conditions discriminant mechanism based on the demand power data is established. To reduce the output power fluctuation of fuel cell (FC), the rules control and genetic algorithm optimize fusion of the energy management strategy is designed by taking the extreme value and change rate of power data under different sailing conditions as threshold values. To improve the influence of FC efficiency characteristics on energy efficiency, the different power constraint intervals are set for different sailing conditions by comparing the total hydrogen consumption in different power constraint intervals. Simulation results show that the proposed method can reduce the output power fluctuation of FC, and the effectiveness of fuel cell ships is verified by comparing the conventional power constraint interval, where hydrogen consumption decreased by 4.26%. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Genetic algorithms

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Efficiency-Optimized Energy Management Strategy for Fuel Cell Ships 43

Efficiency-Optimized Energy Management Strategy for Fuel Cel...

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43rd Chinese control Conference, CCC 2024

作者： Wang, Ning Gao, Tianyu Li, Yang Dalian Maritime University School of Marine Engineering Dalian116026 China Dalian Key Laboratory of Green Power Control and Test for Intelligent Ships Dalian116026 China State Key Laboratory of Maritime Technology and Safety Dalian116026 China Dalian Maritime University School of Marine Electrical Engineering Dalian116026 China

ISBN: (纸本)9789887581581

The fuel cell power system is prone to detach from the high-efficiency range and excessive hydrogen consumption in the ship load demand span under transitional working conditions. Therefore, an efficiency-optimized energy management strategy for fuel cell ships is proposed. For the transition conditions, according to the fuel cell ships load demand span, the rule-based energy management strategy is used as the basic framework to dynamically adjust the output power of the fuel cell and optimize the distribution of the output power between the fuel cell and lithium battery. The simulation results show that compared with the state-based energy management strategy, the proposed method can reduce hydrogen consumption by 6 % and increase the average efficiency of fuel cells by 0.46 %. The proposed energy management strategy can ensure that the fuel cell works in the high-efficiency range and reduces the ship system hydrogen consumption. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Lithium batteries

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Efficient Association Multiple-Object Tracker for Marine Benthonic Organisms Counting 43

Efficient Association Multiple-Object Tracker for Marine Ben...

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43rd Chinese control Conference, CCC 2024

作者： Wang, Ning Kong, Xiangjun Dalian Maritime University School of Marine Engineering Dalian116026 China Dalian Key Laboratory of Green Power Control and Test for Intelligent Ships Dalian116026 China State Key Laboratory of Maritime Technology and Safety Dalian116026 China Dalian Maritime University School of Marine Electrical Engineering Dalian116026 China

ISBN: (纸本)9789887581581

The number of existing marine benthonic organisms fundamentally affects the aquaculture decisions of enterprises, yet faces significant challenges in automatic counting in dynamic occluded environments. In this paper, to tackle the above challenges, an efficient association multiple-object tracker for marine benthonic organisms counting (EAMBOC) is innovatively proposed by combining a Kalman filter incorporating global motion compensation (KGMC) and an efficient association mechanism (EAM). Specifically, KGMC is devised to alleviate the effect of nonlinear camera motion on trajectory prediction by correcting the Kalman filter via the affine matrix. EAM is further employed to associate the predicted trajectories with the detected objects based on the confidence scores so that valid information can be mined from low-quality detections to maintain the continuity of the trajectory. Finally, a comprehensive comparison with typical schemes using real-world videos demonstrates that EAMBOC outperforms DeepSORT, ByteTrack and UAVMOT schemes in terms of RMSE, MAPE and R 2 metrics. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Kalman filters

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