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IEEE Transactions on Artificial Intelligence 2025年第1期6卷 79-92页

作者： Fang, Wenxuan Du, Wei Yu, Guo He, Renchu Tang, Yang Jin, Yaochu East China University of Science and Technology Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of Education Shanghai200237 China Nanjing Tech University Institute of Intelligent Manufacturing Nanjing211816 China China University of Petroleum Department of Automation College of Artificial Intelligence Beijing102249 China Westlake University School of Engineering Hangzhou310030 China

Gasoline blending scheduling is challenging, involving multiple conflicting objectives and a large decision space with many mixed integers. Due to these difficulties, one promising solution is to use preference-based multiobjective evolutionary algorithms (PBMOEAs). However, in practical applications, suitable preferences of decision makers are often difficult to generalize and summarize from their operational experience. This article proposes a novel framework called preference prediction-based evolutionary multiobjective optimization (PP-EMO). In PP-EMO, suitable preferences for a new environment can be automatically obtained from historical operational experience by a machine learning-based preference prediction model when we feed the model with the input of the optimization environment. We have found that the predicted preference is able to guide the optimization to efficiently obtain a set of promising scheduling scenarios. Finally, we conducted comparative tests across various environments, and the experimental results demonstrate that the proposed PP-EMO framework outperforms existing methods. Compared with no preference, PP-EMO reduces operating costs by about 25% and decreases blending errors by 50% under demanding operational conditions. © 2024 IEEE.

关键词： Job shop scheduling

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Spherical Magnetic Fe-Alginate Microgels Fabricated by Droplet-Microfluidics Combining with an External Crosslinking Approach and the Study of Their pH Dependent Fe^(3+) Release Behaviors

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Chinese Journal of Polymer Science 2025年第2期43卷 289-302页

作者： Jie Chen Run-Yu Yu ai-Qi Wang Zhe-Yu Zhang Arezoo Ardekani Yuan-Du Hu Department of Materials Science and Engineering School of Physics Science and EngineeringBeijing Jiaotong UniversityBeijing100044China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou510641China State Key Laboratory of Molecular Engineering of Polymers Fudan UniversityShanghai200438China Department of Mathematics School of Mechanical EngineeringPurdue University585 Purdue MallWest LafayetteIN47907-2088USA

Due to the rapid development and potential applications of iron(Ⅲ)-alginate(Fe-Alg)microgels in biomedical as well as environmental engineering,this study explores the preparation and characterization of spherical Fe-Alg microgels using droplet microfluidics combined with an external ionic crosslinking *** study focused on the role of Fe^(3+)and examined its effects on the physical/chemical properties of microgels under different ionic conditions and reduced or oxidized *** pH-dependent release behavior of Fe^(3+)from these microgels demonstrates their potential biomedical and environmental ***,the microgels can exhibit magnetism simply by utilizing in situ oxidation,which can be further used for targeted drug delivery and magnetic separation technologies.

关键词： Fe-alginate microgels Droplet microfluidics In situ oxidation Magnetism

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RGB-D visual saliency detection of stacked fruits under poor lighting

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International Journal of Agricultural and Biological Engineering 2025年第1期18卷 230-237页

作者： Chunjian Hua Xintong Zou Yi Jiang Jianfeng Yu Ying Chen School of Mechanical Engineering Jiangnan UniversityWuxi 214122JiangsuChina Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment&Technology Jiangnan UniversityWuxi 214122JiangsuChina School of Internet of Things Engineer Jiangnan UniversityWuxi 214122JiangsuChina

The saliency detection of the same kind of stacked fruits can assist robots in completing sorting tasks,which is an important prerequisite for the grading and packing of *** order to accurately obtain saliency targets of fruits in the same kind of stacked state under overexposure,non-uniform illumination,and low illumination,a method for detecting stacked fruits under poor illumination based on RGB-D visual saliency was *** on the Res2Net network,features from each layer of two images were *** realize the complementary advantages between RGB features and depth features,the input RGB images were preprocessed using depth weighting to obtain purified RGB *** increase the information interaction between branches of different scales and better balance the fusion features and modal exclusive features,a multi-scale progressive fusion module was *** minimize the difference between the initial saliency maps generated by different features and improve the accuracy of the final predicted saliency maps,a multi-branch hybrid supervised method was *** comprehensive experiments on the self-made dataset of the same kind of stacked fruits show that the proposed algorithm is superior to five state-of-the-art RGB-D SOD methods in four key indicators:S value,F value,and MAE value,which are 0.979,0.992,and 0.006,respectively,and the P-R curve,which is also closer to the upper right corner of the *** values demonstrate that the proposed algorithm can accurately obtain saliency targets in the same kind of stacked *** results of this study can promote the automatic development of the fruit production and packaging industry.

关键词： RGB-D salient object detection multi-branch fusion depth weighting mixed supervision same kind of stacked fruits

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Research on Real-Time Inspection Scheme of Tunnel Lining Surface Defects Based on YOLOv10

Research on Real-Time Inspection Scheme of Tunnel Lining Sur...

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International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Fang, Enquan Li, Shijiao Liu, Zhen Wang, Yaodong Tao, Tao Guangzhou Metro Group Co. Ltd. Guangzhou510330 China State Key Laboratory of Advanced Rail Autonomous Operation Beijing Jiaotong University Beijing China Ministry of Education Key Laboratory of Vehicle Advanced Manufacturing Measuring and Control Technology Beijing Jiaotong University Beijing100044 China

ISBN: (纸本)9789819639687

To address the issue of increasing tunnel surface defects due to prolonged service periods. This paper proposes an online recognition method using the YOLOv10 object detection algorithm for identifying tunnel surface conditions and intrinsic textures. Initially, tunnel inspection equipment was designed and deployed on a field operation inspection vehicle to facilitate the rapid acquisition of high-definition images of the tunnel surfaces. The collected images were meticulously annotated to highlight intrinsic textures such as cracks, water leaks, pipelines, bolt holes, and distribution boxes, resulting in 5,813 authentic tunnel defect images serving as the datasets for this study. Utilizing the YOLOv10 object detection model, the developed model achieved an accuracy of 80.6%, a recall rate of 77.8%, and an mAP0.5 of 81.3% on the experimental datasets. The model size is just 5.46 MB, and it achieves an FPS of 64.32, which is sufficient to meet the requirements for online detection and recognition tasks of tunnel surface defects. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Inspection equipment

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Mid-infrared period doubled solitons in a few-mode fluoride fiber oscillator

Mid-infrared period doubled solitons in a few-mode fluoride ...

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2024 advanced Fiber Laser Conference, AFL 2024

作者： Yang, Ying Ma, Shuanglong Chen, Zifeng Luo, Xing Guo, Chunyu Ruan, Shuangchen Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Shenzhen Technology University Shenzhen518118 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

Period doubling bifurcation (PDB) phenomenon, which is prevalent in nonlinear systems, has attracted considerable attention because of its potential application value. As an ideal platform for studying the pulse dynamics of nonlinear systems, the mode-locked fiber laser has been intensively investigated in the near-infrared (NIR) spectral region. However, there is a paucity of relevant reports of pulse dynamics in the mid-infrared (MIR) spectral region. Especially for the MIR large-mode-area (LMA) fluoride fiber oscillator, the existence of multiple transverse modes and a new spatial degree of freedom makes the pulse dynamics phenomenon is more complex, which needs to be further explored. In this paper, a soliton regime with a pulse duration of 404.5 fs, repetition frequency of 45.02 MHz, and average output power of 105.3 mW is obtained in a few-mode fluoride fiber oscillator mode-locked by the nonlinear polarization rotation (NPR) technique. By merely increasing the power of the pump, a period doubled soliton with the pulse intensity varying between two different values can be obtained. This work facilitates a more profound comprehension of the nonlinear dynamics in the mid-infrared multimode fluoride fiber laser, and opens up new opportunities for the chaos, optical frequency combs and all-optical modulation. © 2025 SPIE.

关键词： Infrared devices

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Transient energy conversion in marine fuel cells: Multiphysics analysis of heat/mass transfer under realistic oceanic roll conditions

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Energy Conversion and Management 2025年 338卷

作者： Dong, Zheng Chen, Yanjun He, Deqiang Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology School of Mechanical Engineering Guangxi University Nanning530004 China

Proton exchange membrane fuel cell (PEMFC) technology has emerged as a promising high-efficiency and zero-emission power solution for marine propulsion systems. While inertial forces induced by vessel motion are known to affect PEMFC performance, the specific impact mechanisms under rolling conditions remain unexplored. This study presents a systematic investigation of PEMFC dynamic characteristics under ocean rolling motion through a three-dimensional transient model integrating multiphysics coupling. The developed framework combines hydrodynamic analysis with dynamically updated rolling kinematics. The results show that the rolling motion leads to a maximum reduction of 9.89% in the fuel cell's output power, a maximum fluctuation of 16.14% in the current density, and a 23.55% fluctuation in temperature. The magnitudes of these fluctuations escalate with decreasing rolling periods and increasing rolling angles. Additionally, higher operating voltages and lower operating pressures mitigate rolling-induced perturbations. Regarding the rolling effects, the streamwise inertial force emerges as a dominant factor. The rolling motion drives the redistribution of hydrogen and oxygen concentrations, modulates flow velocities, and alters pressure gradients within the flow channels. Consequently, these multiphysics interactions disrupt electrochemical kinetics, resulting in variability in hydrogen consumption (including efficiency losses) and thermal heterogeneity in the membrane. © 2025 Elsevier Ltd

关键词： Dynamic positioning

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Intrinsic pre-strain effect in Ti-Ni based shape memory alloys

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Scripta Materialia 2025年 265卷

作者： Ren, Jinglin Chen, Yulin Gu, Jiawei Zhang, Peng Chen, Chen Zhang, Jian Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology School of Intelligent Manufacturing Jiangnan University Wuxi214122 China

Shape memory effect (SME) in shape memory alloys (SMAs) results from deformation below Af, accompanying pre-strain effect (PSE) which was usually implicated by dislocations. We systematically investigate the effects of small pre-strain (49Ni45.7Cu4.9Cr0.4 SMA with strong dislocation resistance against (negligible dislocations introduced during) martensitic transformations. It is demonstrated by the disappearance of functional fatigue upon thermal cycling, and unchanged transformation characteristics after removing PSE by reverse transformation. With small pre-strain, martensites remaining twinned (multi-domain) by TEM, however exhibit increased reverse transformation characteristic temperatures. It is thus defined as intrinsic PSE (IPSE), which is contrast to the common belief that PSE is solely attributed to elastic energy releasing of detwinning (single-domain). The IPSE is explained by local stress field raised by surrounding constraints on the pre-detwinned and reoriented martensites. Our findings shed lights on the understandings of PSE and thus associated SME in SMAs. © 2025 Acta Materialia Inc.

关键词： Shape-memory alloy

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Trajectory tracking control for collaborative robotic arms with SEA based on force compensation in Cartesian space

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Kongzhi yu Juece/Control and Decision 2025年第6期40卷 1807-1816页

作者： Zhang, An-Long Lin, Zhi-Yun Wang, Bo Han, Zhi-Min School of Automation Hangzhou Dianzi University Hangzhou310018 China School of Automation and Intelligent Manufacturing Southern University of Science and Technology Shenzhen518055 China Shenzhen Key Laboratory of Control Theory and Intelligent Systems Southern University of Science and Technology Shenzhen518055 China Peng Cheng Laboratory Shenzhen518000 China

A trajectory tracking control algorithm based on Cartesian space force compensation is proposed to address the issues of low control accuracy and poor dynamic performance of trajectory tracking control for robotic arms with a serial elastic actuator(SEA). The algorithm aims to improve the accuracy of Cartesian space trajectory tracking. Firstly, the SEA and the 6-degree-of-freedom(6-DOF) robotic arm system model are introduced, and a position-velocity-torque mixed control algorithm based on neural network model predictive control(NNMPC) is designed. Subsequently, based on this joint controller, a Cartesian space force compensation control algorithm for flexible joint manipulators is designed. This algorithm calculates the force compensation value in Cartesian space based on the tracking error, combines it with a PID controller, converts it into a target torque compensation value in the joint space, and compensates it to the joint controller to achieve high-precision Cartesian space trajectory tracking. Cartesian space force compensation can effectively counteract external disturbances and system uncertainties, reduce tracking errors, and enable the manipulator to more accurately track the target trajectory. Finally, the effectiveness and superiority of the proposed trajectory tracking controller are validated through simulation and experimental trials. The experimental outcomes demonstrate that the controller achieves an overall accuracy of 1.86 mm, marking an enhancement of 2.91 mm and 1.77 mm over the uncompensated trajectory tracking and position-based compensation trajectory tracking control algorithms, respectively. © 2025 Northeast University. All rights reserved.

关键词： Robotic arms

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Aerodynamic Impact of Guide Vanes on a Two-Stage Counter-Rotating Lift Fan 15

Aerodynamic Impact of Guide Vanes on a Two-Stage Counter-Rot...

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15th Asia Conference on Mechanical and Aerospace Engineering, ACMAE 2024

作者： Yang, Wenyu Shao, Weiping Deng, Jinlai Xu, Chenzhou School of Mechanical Engineering Shenyang Ligong University Shenyang China Liaoning Key Laboratory of Advanced Manufacturing Technology and Equipment Liaoning China Department of Precision Instrument Tsinghua University Beijing100084 China State Key Laboratory of Precision Space-time Information Sensing Technology Beijing100084 China

ISBN: (纸本)9781643685892

The lift fan is a critical component in vertical short takeoff and landing (VSTOL) fighters, enhancing thrust and offering significant applications in aerospace. To streamline airflow and optimize flow field distribution, guide vanes are often incorporated into lift fans to improve efficiency. However, studies on the aerodynamic impact of inlet and outlet guide vanes remain limited. This research examines the effects of inlet guide vane number and deflection angle, as well as the influence of outlet guide vanes on flow characteristics, using a two-stage counter-rotating lift fan as the subject. Findings indicate that fan lift increases steadily with the number of inlet guide vanes until reaching ten, after which additional vanes cause a rapid decrease in lift. The total pressure loss coefficient initially remains constant and then rises with increased inlet guide vane deflection angle. As adjustable vanes, the inlet guide vanes can pivot from approximately 80° to 20° to achieve gradual lift improvement. Compared to configurations without outlet guide vanes, the addition of outlet guide vanes significantly enhances airflow uniformity near the fan's exit, reducing aerodynamic losses and stabilizing the overall flow. © 2025 The Authors.

关键词： Flight simulators

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A Patent Review and Current Status of Ultra-thin Vapour Chamber

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Recent Patents on Engineering 2025年第5期19卷

作者： Dong, Boxiong Xie, Baocheng Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology Harbin150080 China

Background: With the advent and rapid development of 5G technology, many electronic products have been developed in the miniaturized direction. However, excessive operating temperature generated by these electronic products in a small space results in serious runaway problems, such as battery failure and dead equipment. To solve the heat dissipation problem of small electronic products, ultra-thin vapour chambers are widely used in the heat dissipation field of these electronic products due to the characteristic of rapid heat conduction and thermal expansion. Therefore, optimizing the performance of ultra-thin vapour chambers is critical. Over the years, optimizing the performance of ultra-thin vapour chambers has piqued the industry's interest. Objective: This study aimed at exploring the structural features, optimization method, and development status of the ultra-thin vapour chambers. Methods: This patent study reviews various representative patents related to ultra-thin vapour chambers and discusses the problems existing in the process of achieving ultra-thinning to provide a reference for designers of ultra-thin vapour chambers in the future. Results: Through the investigation of a large number of patents on ultra-thin vapour chamber, some existing problems are summarized and analyzed. Finally, the future trend of ultra-thin vapour chambers is discussed. Conclusion: The optimization of ultra-thin vapour chambers benefits the heat dissipation of small electronic products and improves product safety. More related patents will be published in the future. © 2025 Bentham Science Publishers.

关键词： Heat conduction

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