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7th CAA International Conference on Vehicular control and Intelligence, CVCI 2023

作者： Cui, Zhihao Wang, Yulei Bian, Ning Chen, Hong Clean Energy Automotive Engineering Center School of Automotive Studies Tongji University Shanghai China Department of Control Science and Engineering Tongji University Shanghai China Dongfeng Technical Center Dongfeng Motor Corporation Wuhan China Clean Energy Automotive Engineering Center Department of Control Science and Engineering Tongji University Shanghai China

ISBN: (纸本)9798350340488

Developing a safe and highly effective policy for autonomous vehicles (AVs) continues to pose a significant challenge in machine learning. In this study, we propose a novel reinforcement learning approach with reward machine. By tailoring the reward function to the specific needs of AVs in highway scenarios, we enable them to make more informed and efficient decisions. Our focus is on designing a reward function to formalize traffic rules, which is crucial for achieving safe and effective AV behavior on highways. To address this problem, we propose several innovative ideas that go beyond existing algorithmic techniques, specifically aimed at facilitating exploration and exploitation on different operations. To our knowledge, this is the first reinforcement learning algorithm that can integrate the safe distance with autonomous highway driving, aiming at the Vienna Convention on road traffic. Experimental results demonstrate the effectiveness of the proposed approach, which significantly improves AVs' safety and performance on highways. © 2023 IEEE.

关键词： autonomous driving autonomous vehicles highway reinforcement learning reward machine safe distance

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M2Coder: A Fully Automated Translator from Matlab M-functions to C/C++ Codes for ACS Motion controllers

M2Coder: A Fully Automated Translator from Matlab M-function...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Yang, Xiaowei Wang, Xuchen Liu, Zidong Shu, Feng Shanghai Engineering Research Center of Ultra-Precision Motion Control and Measurement Academy for Engineering and Technology Fudan University Shangha China

ISBN: (纸本)9789811966125

In order to accelerate the deployment of complex motion control algorithms from Matlab M-function codes to C/C++, we propose a fully automated translator named M2Coder for ACS motion controllers which are widely used in high performance industrial motion control applications. The M2Coder translator includes a preprocessing subsystem, a code conversion subsystem and a post-processing subsystem, and it can automatically convert Matlab M-function codes using the ACS Matlab library into C/C++ codes using the ACS C/C++ library. The M2Coder translation system enables engineers to make full use of the flexibility of Matlab coding in the experimental stage and the efficiency of C/C++ in the deployment stage without the typically error-prone communication overhead between control and software engineering teams. Experiments demonstrate the efficiency of the M2Coder system. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： controllers

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research on the natural circulation characteristic of deep borehole heat exchanger and the influences on the water circulation resistance

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Building Simulation 2024年第12期17卷 2213-2232页

作者： Jiewen Deng Yanhui Wang Yangyang Su Yuanguo Wang Yin Chen Minghui Ma Chenwei Peng Wanlong Cai Ji Li Qingpeng Wei Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin School of Environmental Science&EngineeringHuazhong University of Science and TechnologyWuhanHubei 430074China Department of Building Science Tsinghua UniversityBeijing 100084China School of Human Settlements and Civil engineering Xi'an Jiaotong UniversityXi'anShaanxi 710049China China Academy of Building Research Bejing 100101China

As deep borehole heat exchangers(DBHEs)extract heat from geothermal energy with depth of 2–3 kilometers,the circulation water pressure drop is larger than that of shallow-depth borehole heat exchangers,influenced by the water flow *** paper conducted field tests and simulation analysis to study the heat transfer performance and water circulation resistance of DBHE in coupled,where the natural circulation characteristic has been discovered and analyzed *** show that the water temperature and density variation along DBHE forms the driving force of natural *** mechanical flow rate of 6.0 kg/s and inlet water temperature of 20.0℃,the natural circulation flow rate reaches about 2.2 kg/s with transient heat extraction power of 78.5 kW,without energy consumption of water *** the larger inlet water temperature,smaller mechanical water flow rate,higher inner tube thermal conductivity coefficient and larger depth of DBHE all contribute to the larger natural circulation water flow *** addition,the natural circulation could effectively decrease the comprehensive water pressure drops of DBHE,which is about 47.3%smaller than the calculated value of traditional *** the natural circulation characteristic has significant influence on the heat transfer performance of DBHE,and also on the energy performance of whole heat pump systems.

关键词： deep borehole heat exchangers water circulation resistance natural circulation field tests simulation analysis

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Guidelines for Raman spectroscopy and imaging techniques in food safety analysis

Food Safety and Health

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Food Safety and Health 2024年第2期2卷 221-237页

作者： Li, Ning Hussain, Nisar Ding, Zhongxiang Qu, Cheng Li, Yuzhu Chu, Leiming Liu, Honglin China Light Industry Key Laboratory of Meat Microbial Control and Utilization School of Food and Biological Engineering Engineering Research Center of Bioprocess Ministry of Education Hefei University of Technology Hefei China

Ensuring the highest standards of food quality and safety is crucial for maintaining human health. This requires the creation of sophisticated and highly sensitive techniques for detecting and identifying food pollutants. Raman spectroscopy, known for its rapidity, simplicity, sensitivity, and noninvasive characteristics, has become a prominent method in the field of food safety and quality analysis. This review discusses in detail the fundamental principles, instruments, methodology, and data processing techniques of Raman spectroscopy. It specifically emphasizes the practical applications of Raman spectroscopy in assessing foodborne pathogens, toxic gases in spoiled foods, and monitoring the translocation of pesticide in plants. Finally, we discussed the development trend and challenges of Raman spectroscopy in the field of food safety analysis, aiming to provide an accessible and practical guide. This review article equips readers with essential insights into conducting and understanding Raman spectroscopy experiments, thereby contributing to development in the field of food safety analysis. © 2024 The Authors. Food Safety and Health published by John Wiley & Sons Australia, Ltd on behalf of International Association of Dietetic Nutrition and Safety.

关键词： food and health food safety food testing

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Pure Pursuit of a Target on a Circular Trajectory

Pure Pursuit of a Target on a Circular Trajectory

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AIAA SciTech Forum and Exposition, 2024

作者： Von Moll, Alexander Casbeer, David W. Weintraub, Isaac E. Control Science Center Air Force Research Laboratory 2210 8th St. WPAFB OH45433 United States

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

This investigation seeks to obtain estimates on the intercept time associated with a fast Pursuer implementing Pure Pursuit against a Target whose trajectory is a circular arc. The analytical solution of the kinematic equations of motion is not feasible and thus the baseline approach for computing the intercept time is numerical simulation, i.e., numerical integration of the kinematics. This method can obtain the intercept time in (essentially) real time for a single Pursuer against a single Target. Here, the goal is to estimate the intercept time using orders of magnitude less computational time. Although not explicitly explored in this work, the purpose of such approximations is to make feasible the rapid evaluation of Pursuer-to-Target assignments in a massive many-on-many engagement scenario wherein the intercept time may be a key measure. Several approximation methods are proposed here and their merits (or lack thereof) are demonstrated through simulation. Ultimately, assuming the Target is not actually turning may be suitable when its turn radius is relatively large, while assuming intercept occurs at the closest point on the turn circle may be suitable when its turn radius is relatively small. © 2024 by Ahmet Talha Çetin, Emre Koyuncu.

关键词： Equations of motion

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Performance and electromagnetic mechanism of radar-and infraredcompatible stealth materials based on photonic crystals

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 710-717页

作者： Yanming Liu Xuan Yang Lixin Xuan Weiwei Men Xiao Wu Yuping Duan AVIC Research Institute for Special Structures of Aeronautical Composite Ji’nan 250023China Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows Ji’nan 250023China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116085China

Traditional stealth materials do not fulfill the requirements of high absorption for radar waves and low emissivity for infrared ***,they can be detected by various technologies,considerably threatening weapon ***,a stealth material compatible with radar and infrared was designed based on the photonic bandgap characteristics of photonic *** radar stealth lay-er(bottom layer)is a composite of carbonyl iron/silicon dioxide/epoxy resin,and the infrared stealth layer(top layer)is a 1D photonic crystal with alternately and periodically stacked germanium and silicon *** composition optimization and structural adjust-ment,the effective absorption bandwidth of the compatible stealth material with a reflection loss of less than-10 dB has reached 4.95 *** average infrared emissivity of the proposed design is 0.1063,indicating good stealth *** theoretical analysis proves that photonic crystals with this structural design can produce infrared waves within the photonic bandgap,achieving high radar wave transmittance and low infrared *** stealth is achieved without affecting the absorption performance of the radar stealth layer,and the conflict between radar and infrared stealth performance is *** work aims to promote the application of photonic crystals in compatible stealth materials and the development of stealth technology and to provide a design and theoretical found-ation for related experiments and research.

关键词： microwave absorption infrared stealth photonic crystal compatible stealth

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Identification of Shell Color-Associated Genes Using Mantle Branch-Specific RNA Sequencing of Yellow-Colored Line of Pearl Oyster Pinctada fucata martensii

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Journal of Ocean University of China 2024年第4期23卷 1076-1086页

作者： PENG Haiming LIAO Yongshan YANG Chuangye MKUYE Robert DENG Yuewen YUE Chenyang Fisheries College Guangdong Ocean UniversityZhanjiang 524088China Pearl Research Institute Guangdong Ocean UniversityZhanjiang 524088China Guangdong Science and Innovation Center for Pearl Culture Zhanjiang 524088China Pearl Breeding and Processing Engineering Technology Research Center of Guangdong Province Zhanjiang 524088China Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture Zhanjiang 524088China

The yellow-colored line of pearl oyster Pinctada fucata martensii displays a yellow prismatic layer and a white nacreous layer that can be used as an ideal model for research on shell color ***-Raman spectroscopy and transcriptome analyses were performed to explore the potential molecular mechanism underlying the phenotype *** micro-Raman spectroscopy results indicate that the prismatic layer exhibits distinct characteristic peaks of carotenoids,while these peaks are not prominent in the nacreous *** the transcriptome comparison of the central zone of mantle and mantle edge tissue,which function in nacreous and prismatic layer formation,respectively,935 significantly differentially expressed genes(DEGs)were identified,with 385 genes upregulated and 227 genes downregulated(|log_(2)(Fold change)|>1 and false discovery rate<0.05)in the mantle edge *** these genes,some were associated with melanoma/melanogenesis,such as tyrosinase,zinc metalloprotease,glutathione S-transferase,and ATP-binding cassette sub-family;some were associated with the carotenoid-related pathway,including scavenger receptors,cytochrome P450 and lipoprotein *** associated with porphyrin metabolism,including porphobilinogen deaminase,and copper/zinc superoxide dismutase,and genes associated with shell matrix protein,including amorphous calcium carbonate binding protein,shematrin,PIF,and collagen,also exhibited significantly different *** is speculated that the different colours between prismatic layer and nacreous layer in the yellow-colored line of *** might be resulted from melanin,carotenoids and porphyrin metabolism,while genes related to shell structure and biomineralization might also affect *** results provide new insights to understand the mechanism of shell color formation in mollusca.

关键词： Pinctada fucata martensii shell coloration transcriptome

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A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination

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Journal of Environmental sciences 2024年第4期138卷 189-199页

作者： Hongxin Liu Kuiling Li Kunpeng Wang Zhiyong Wang Zimou Liu Sichao Zhu Dan Qu Yu Zhang Jun Wang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua UniversityBeijing 100084China School of Chemical and Environmental Engineering Beijing CampusChina University of Mining and TechnologyBeijing 100083China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

Membrane distillation(MD)is a promising alternative desalination technology,but the hydrophobic membrane cannot intercept volatile organic compounds(VOCs),resulting in aggravation in the quality of *** term of this,electro-Fenton(EF)was coupled with sweeping gas membrane distillation(SGMD)in a more efficient way to construct an advanced oxidation barrier at the gas-liquid interface,so that the VOCs could be trapped in this layer to guarantee the water quality of the *** the so-called EF-MD process,an interfacial interception barrier containing hydroxyl radical formed on the hydrophobic membrane *** contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/*** interceptions can be achieved in a wide temperature range,even though the permeate flux of phenol was also *** EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions,which endowed the long-term stability of the *** novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.

关键词： Membrane distillation VOC interception Interfacial oxidation Electro-Fenton Hypersaline wastewater

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A Compact Antenna Array With Integrated Feeding Structure for Intelligent Vehicular Transportation Systems Application

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IEEE Internet of Things Journal 2025年第12期12卷 22522-22532页

作者： Gan, Lu Mao, Bohua Liu, Xiaoming Yu, Shuo Jing, Xiaojun Cui, Yuanhao Anhui Normal University School of Physics and Electronic Information China Anhui Engineering Research Center on Information Fusion and Control of Intelligent Robot Anhui Wuhu241002 China Beijing University of Posts and Telecommunications School of Information and Communication China

A compact antenna array is developed for W-band vehicle mounted millimeter-wave radar, also suitable for internet of things (IoT) and intelligent vehicular transportation systems (IVTS). The proposed array provides a flat shoulder shaped radiation pattern, obtained using a beamforming algorithm, enabling medium-and long-range radar detection and information transmission between wireless devices. The beamforming algorithm determines the excitation amplitudes and phases of each sub-array. Power dividers are designed using a scheme of equal/unequal power division to meet the requirements of amplitude. And phase shifters are used to create required phases. To obtain a compact design, a substrate integrated waveguide (SIW) feeding structure are employed to integrate power dividers, phase shifters, and waveguide transitions into a single part. Quadratic recursive exhaustive search in combination with full-wave simulation is used to optimize the design. Further improvements are made to achieve a more compact feeding structure. The realized array provides a stable flat shoulder shaped radiation pattern in the H-plane. In addition, its maximal gain appears in the boresight direction, which is usually a challenge for patch element array. The realized gain is 22 dBi, and the ripple in the shoulder range is less than 2.3 dB, which is better than other designs. The feeding structure is only 14mm× 16mm large, showing a minimized design. The demonstrated antenna presents itself to be an excellent hardware candidate for IoT and IVTS. © 2014 IEEE.

关键词： Voltage dividers

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Grouping of the UAV Swarm Based on Automatic Fuzzy Clustering

Grouping of the UAV Swarm Based on Automatic Fuzzy Clusterin...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Liu, Zhiheng Zhou, Rui Chen, Jinyong Zhang, Ning School of Automation Science and Electrical Engineering Beihang University Beijing100083 China Science and Technology on Aircraft Control Laboratory AVIC Xi’an Flight Automatic Control Research Institute Xi’an710065 China

ISBN: (纸本)9789811966125

The confrontation between UAV swarms will be an important combat style in the future, and a reasonable division of such a target air fleet is instructive to the deployment of our own resources. In this paper, we combine the genetic fuzzy clustering and the cluster validation to achieve autonomous grouping of the UAV swarm. Firstly, the flight state parameters such as position, speed, and yaw angle are used as characteristic components to measure the differences among UAVs. Then, the proposed approach establishes a mathematical model for grouping of the UAV swarm by fuzzy C-means algorithm. In addition, we compare five advanced clustering validity indexes and a clustering validation method based on graph theory, from which an evaluation criterion more applicable to grouping of the UAV swarm is selected. Finally, numerical simulations are performed to verify that the proposed approach can divide the air fleet autonomously and rationally in complex task scenarios. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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