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Smart Power & Internet Energy Systems (SPIES), International Conference on

作者： Jingfei Jiang Bo Bao Fanzhuo Meng Yifan Ma Hui Zhang Yucheng Jin Fengwen Pan Xinmei Yuan State Key Lab. of Automotive Simulation and Control Jilin University Changchun China Changchun Automotive Test Center Co. Ltd. Changchun China Weichai Power Co. Ltd. Weifang China

Electric buses play a vital role in future sustainable transportation and estimating the energy consumption of electric buses is important for reducing range anxiety and optimizing charging schedules. However, due to the numerous unobserved factors in real-world driving, there are naturally significant uncertainties in the energy consumption of electric vehicles. Therefore, besides focusing on improving model accuracy, the estimating probabilistic distribution of the uncertainties can also help to better characterize electric bus energy consumption and increase the confidence in the estimation results. In this paper, two probabilistic models, based on Bayesian regression and quantile regression, are proposed to estimate the probabilistic distribution of electric bus energy consumption; the probabilistic models are trained and validated using real-world driving data from 10 electric buses over a year. The results show that the proposed methods both capture the probabilistic characteristics well; however, the variations of uncertainties are better adapted in quantile regression.

关键词： Temperature measurement Energy consumption Adaptation models Uncertainty Atmospheric modeling Estimation Probabilistic logic

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Research on adaptive cruise following control strategy based on model prediction 4

Research on adaptive cruise following control strategy based...

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4th IEEE Information Technology, Networking, Electronic and Automation control Conference, ITNEC 2020

作者： Cui, Liu Jianhua, Guo Wei, Zhang Yu, Zhang School of Mechanical and Electrical Engineering Qingdao Binhai University Qingdao China State Key Laboratory of Automotive Dynamic Simulation and Control Jilin University Chang Chun China China Automotive Technology Research Center Tian Jin China

ISBN: (纸本)9781728143903

In this paper, an adaptive cruise following strategy is designed based on the model prediction, and an appropriate inter-distance strategy is designed. By taking three indicators of traceability, comfort and safety as the quantitative indicators of ACC performance, a comprehensive performance indicator function is established based on inter-distance strategy so as to obtain the desired acceleration of the vehicle following strategy. Simulink and Carsim are employed to establish a system simulation model, and the simulation results are compared and analyzed. The simulation results show that the vehicle-following strategy based on model prediction not only satisfies vehicle-following driving, but also enhance the driving comfort. © 2020 IEEE.

关键词： Simulink

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Spatial-temporal Traffic Congestion Prediction Based on Attention Mechanism

Spatial-temporal Traffic Congestion Prediction Based on Atte...

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Conference on Vehicle control and Intelligence (CVCI)

作者： Shilin Pu Liang Chu Yuanjian Zhang Zhuoran Hou Jianbing Gao Chong Guo State Key Lab of Automotive Dynamic Simulation and Control Jilin University Jilin China 1 W-Tech Center Queen’s University Belfast UK Institute of Transportation System University of Leeds Leeds UK

ISBN: (纸本)9781665408486

Accurate traffic flow prediction is of great significance for intelligent transportation system in intelligent city. For the problem of traffic congestion, accurate prediction of traffic congestion is conducive to rational urban planning and efficient energy utilization. There are some problems in data-driven traffic flow congestion prediction, such as inaccurate prediction caused by complex spatiotemporal correlation characteristics. Facing this problem, this paper proposes a spatiotemporal attention combination network (STACN) based on attention mechanism for traffic congestion prediction. Firstly, this paper uses the conventional attention mechanism to capture the multi-dimensional time series correlation of the target road. Secondly, this paper uses the graph attention mechanism to capture the spatial dependence of all neighborhoods of the target road in the graph. In this paper, the prediction accuracy and consistency of congestion level are evaluated by using the actual traffic data set, and the experimental results verify the effectiveness of the model.

关键词： Correlation Roads Urban planning Time series analysis Predictive models Feature extraction Spatiotemporal phenomena

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Vortex Vibration Energy Harvesting for Road Vehicle Suspension: Modeling, Prototyping and Experimental Validation

SSRN

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SSRN 2023年

作者： Wang, Yushun Yin, Hao Li, Mingxing Chen, Yuanchang Sun, Haoyu Liu, Jiang Key Lab of Industrial Fluid Energy Conservation and Pollution Control Qingdao University of Technology Qingdao266520 China Structural Dynamics and Acoustic Systems Laboratory University of Massachusetts Lowell One University Avenue LowellMA01854 United States Nanjing University of Aeronautics and Astronautics Nanjing211100 China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China

Aiming at the micro power supply for vehicle suspension control, we propose a new harvester to recycle the vortex vibration energy behind the shock absorber. Different from the traditional regenerative suspensions utilizing the vertical motion, we recycle the vortex vibration energy laterally. A suspension dynamics model was built and simulated the spring compression process to discuss the break wind condition. A stable Karman vortex street would be developed after the spring is compressed to a certain height, proving that the car spring’s wind break effect could be neglect in many driving conditions. Then the spring and shock absorber was simplified to a cylinder with two cross sections. The fluid analysis was performed and the vortex form showed three features. A bidirectional fluid-structure coupling model was built for the new harvester and the simulation verified that the electric voltage positively correlated with the vehicle’s velocity. At last, a full size sample prototype test was performed for validation. The designed harvester may provide enough electricity for a suspension control unit or sensors, as a potential solution for the near field energy supply. When the car is driving with a common speed in cities, the recycled electric voltage could reach to 0.8V. © 2023, The Authors. All rights reserved.

关键词： Vortex flow

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Investigation on the Mechanical Properties and Shape Memory Effect of Landing Buffer Structure Based on NiTi Alloy Printing

Research Square

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Research Square 2021年

作者： Yu, Zhenglei Xin, Renlong Xu, Zezhou Zhu, Yining Zhang, Xiaolong Hao, Shijie Zhang, Zhihui Liang, Ping Jilin University State Key Laboratory of Automotive Simulation and Control China Jilin University Kay Lab of Bionic Engineering Ministry of Education China Key Lab of Bionic Engineering Ministry of Education Jilin University China Agriculture College Yanbian University China Key Lab of Bionic Engineering Ministry of Education China China University of Petroleum Beijing State Key Laboratory of Heavy Oil Processing China

With the deepening of human research on deep space exploration, our research on the soft landing methods of landers has gradually deepened. Adding a buffer and energy-absorbing structure to the leg structure of the lander has become an effective design solution. Based on the energy-absorbing structure of the leg of the interstellar lander, this paper studies the appearance characteristics of the foot-grabbing of the Odontodactylus scyllarus. The foot-grabbing of the Odontodactylus scyllarus can not only hit the prey highly when preying, but also can easily withstand the huge counter-impact force. the predatory foot structure of the Odontodactylus scyllarus, like a symmetrical cone, shows excellent rigidity and energy absorption capacity. Inspired by this discovery, we used SLM technology to design and manufacture two nickel-titanium samples, which respectively showed high elasticity, shape memory, and better energy absorption capacity. This research provides an effective way to design and manufacture high-mechanical energy-absorbing buffer structures using bionic 3D printing technology and nickel-titanium alloys. © 2021, CC BY.

关键词： 3D printers

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A Novel Framework to Collect Use Cases for the Evaluation of the Adaptability to Future Sustainable Transportation of IEC Standard System

A Novel Framework to Collect Use Cases for the Evaluation of...

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Information Science, Computer Technology and Transportation (ISCTT), International Conference on

作者： Jiahong Jin Feng Ni Lili Li Lizong Zhang Wei Xiao Xinmei Yuan State Grid Shaoxing Power Supply Company Shaoxing China State Grid Electric Power Research Institute Nanjing China Sichuan Energy Internet Research Institute Chengdu China College of Automotive Engineering State Key Lab. of Automotive Simulation and Control Jilin University Changchun China

ISBN: (数字)9781728185750

ISBN: (纸本)9781728185767

With the development of modern technologies and the environmental requirements, the revolution of sustainable transport systems in the future is inevitable. Standardization plays a key role in providing the ability of information sharing which will be required to enable the development of new applications for a future sustainable transport system. The collection of use cases is a fundamental step to comprehensively analyze the standardization requirements for future sustainable transport. In this paper, the enablers of future transport systems are found, a system model of future sustainable transport is proposed. Based on the framework of the combination of enablers and transport system model, use cases are given, and the aspects required to be focused for future sustainable transport standardization with priorities become clearer.

关键词： Adaptation models Information science Transportation IEC Information management IEC Standards Standards

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Study of Cracking Mechanism and Wear Resistance in Laser Cladding Coating of Ni-based Alloy

Research Square

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Research Square 2021年

作者： Yu, Zhenglei Li, Lunxiang Zhang, Deqiang Shi, Guangfeng Yang, Guang Xu, Zezhou Zhang, Zhihui Changchun130022 China Key Lab of Bionic Engineering Ministry of Education Jilin University Changchun130022 China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China College of Mechanical and Electric Engineering Changchun University of Science and Technology Changchun130022 China College of Mechanical Engineering and Automation Liaoning University of Technology Liaoning Jinzhou121001 China Shenyang110136 China

Ni-based coatings with the addition of a plastic phase- an austenitic stainless net were prepared using laser cladding technology, and the CeO2 was added in cladding layers. The cracking mechanism, microhardness, microstructure, phase composition, and wear properties were investigated. The relationship between thermal stress and the elastic and plastic fracture had been developed from the standpoint of fracture mechanics and thermal elastic fracture mechanics. The Fracture criterion of the nickel-based coating was obtained, and the study has shown that the crack sensitivity could be reduced by decreasing the thermal expansion coefficient Δα. Then a new method was proposed, in which the substrate was prefabricated the stainless steel net. It was found that the number of cracks reduced significantly with the addition of stainless steel net. When the stainless steel net with 14 mesh was added in Ni-based coatings, the average microhardness of nickel composite coating was 565 HV0.2, which was 2.6 times higher than that of the 45 steel substrate. Although the rare earth oxide 4 wt.% CeO2 and stainless steel net were added in the Ni-based coating reducing the microhardness (the average microhardness is 425 HV0.2), the wear resistance of it improved substantially. The wear volume of Ni-Based composite coating was 0.56×10-5mm3·N-1·m-1, which was 85.1% lower than that of 45 steel and 61.9% lower than that of Ni-based coating without CeO2 and stainless steel net. The experiment results have shown that the Nickel-based composite coating is equipped with low crack sensitivity and high abrasive resistance with austenitic stainless net and the rare earth oxide 4 wt.% CeO2. © 2021, CC BY.

关键词： Wear resistance

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Multi-view adaptive fusion network for 3D object detection

arXiv

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arXiv 2020年

作者： Wang, Guojun Tian, Bin Zhang, Yachen Chen, Long Cao, Dongpu Wu, Jian State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences School of Artificial Intelligence University of Chinese Academy of Sciences Beijing100190 China School of Data and Computer Science Sun Yat-Sen University Guangzhou510275 China Lab University of Waterloo Canada College of Automotive Engineering Jilin University China

3D object detection based on LiDAR-camera fusion is becoming an emerging research theme for autonomous driving. However, it has been surprisingly difficult to effectively fuse both modalities without information loss and interference. To solve this issue, we propose a single-stage multi-view fusion framework that takes LiDAR Birds-Eye View, LiDAR Range View and Camera View images as inputs for 3D object detection. To effectively fuse multi-view features, we propose an Attentive Pointwise Fusion (APF) module to estimate the importance of the three sources with attention mechanisms which can achieve adaptive fusion of multi-view features in a pointwise manner. Besides, an Attentive Pointwise Weighting (APW) module is designed to help the network learn structure information and point feature importance with two extra tasks: foreground classification and center regression, and the predicted foreground probability will be used to reweight the point features. We design an end-to-end learnable network named MVAF-Net to integrate these two components. Our evaluations conducted on the KITTI 3D object detection datasets demonstrate that the proposed APF and APW module offer significant performance gain and that the proposed MVAF-Net achieves state-of-the-art performance in the KITTI benchmark. Copyright © 2020, The Authors. All rights reserved.

关键词： Object recognition

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A use Cases Analysis Method for the Evaluation of the Adaptability to Future Sustainable Transportation of IEC Standard System

A use Cases Analysis Method for the Evaluation of the Adapta...

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Information Science, Computer Technology and Transportation (ISCTT), International Conference on

作者： Xuling Li Baiqiang Shen Wei Xiao Lei Wang Lili Li Xinmei Yuan Feng Ni State Grid Electric Power Research Institute Nanjing China State Grid Zhejiang Electric Power CO. LTD. Hangzhou China Sichuan Energy Internet Research Institute Chengdu China State Grid Shaoxing Power Supply Company Shaoxing China College of Automotive Engineering State Key Lab. of Automotive Simulation and Control Jilin University Changchun China

ISBN: (数字)9781728185750

ISBN: (纸本)9781728185767

With the rapid penetration of electrification, communication, and computer technologies into the transportation sector, conventional transportation system is undergoing important revolution, and the corresponding standard system is also facing huge challenges. In this paper, a method to evaluate the adaptability of current IEC standards facing the future sustainable transportation is proposed. Use cases related to future sustainable transportation were collected first, then all the collected use cases are evaluated and ranked. Important use cases are analyzed and recommendations to the current standardization system can be obtained. Two important use cases: coordinated charging and battery-powered tram are given as examples to show the results of the proposed method.

关键词： Information science Systematics Transportation IEC Market research IEC Standards Standards

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Effect of Bionic Unit Shapes on Solid Particle Erosion Resistance of ZrO2-7wt%Y2O3 Thermal Barrier Coatings Processed by Laser

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Journal of Bionic Engineering 2018年第3期15卷 545-557页

作者： Panpan Zhang Fuhai Li Xiaofeng Zhang Zhihui Zhang Chaolin Tan Luquan Ren Yueliang Wang Wenyou Ma Min Liu The Key Laboratory of Bionic Engineering (Ministry of Education China) Jilin University 5988 Renmin Street Changchun 130022 China Guangdong Institute of New Materials National Engineering Laboratory for Modern Materials Surface Engineering Technology the Key Lab of Guangdong for Modern Surface Engineering Technology Guangzhou 510651 China The State Key Laboratory of Automotive Simulation and Control Jilin University 5988 Renmin Street Changchun 130022 China

Inspired by the coupling phenomena in biological systems, to improve the solid particle erosion resistance of Thermal Barrier Coatings （TBCs）, different kinds of bionic units were made on the coating surfaces using Bionic Coupled Laser Remelting （BCLR） process. The NiCoCrAlYTa/ZrO2-7wt%Y2O3 double-layer structured TBCs were prepared by air plasma spraying. The microstructure, microhardness and phase composition of the as-sprayed and bionic specimens were examined. The solid particle erosion behaviors of bionic specimens as function of bionic unit shape were investigated. The results indicated that the bionic specimens had better erosion resistance than the as-sprayed specimen. The specimen with striation and grid bionic units had the better erosion resistance, while the dot showed the worse. The bionic units were characterized by the dense columnar crystal structure and the high hardness, which are the main reasons for improving the erosion resistance. Under the synergistic action of the shear stress and normal stress on the protrusive coating surface, the erosion failure of the as-sprayed TBCs was proved to be the fracture and spallation of the splats. By contrast, the spallation of segmented bionic unit occurred in the overlapping area between the adjacent laser irradiation, and the erosive unit surface presented the clear and deep furrows, which revealed that the erosion failure mechanism of bionic TBCs was dominated by brittle and some ductile erosion. These results showed more opportunities for bionic application in improving the solid particle erosion resistance of components in the windy and sandy environment.

关键词： bionic thermal barrier coatings erosion resistance laser

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