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5th International Conference on Intelligent Autonomous Systems, ICoIAS 2022

作者： Cheng, Yi Zhao, Yan School of Control Science and Engineering Tiangong University Tianjin Key Laboratory of Intelligent Control of Electrical Equipment Tianjin China School of Control Science and Engineering Tiangong University Tianjin China

ISBN: (数字)9781665498388

ISBN: (纸本)9781665498388

The performance of traditional clutter suppression methods including moving target indication (MTI), moving target detection (MTD) and constant false alarm rate (CFAR) are limited under the background of strong clutter. In order to effectively eliminate false alarm plots caused by clutter, a radar false alarm plots elimination method based on multi-feature evaluation is proposed. Firstly, the density based spatial clustering of applications with noise (DBSCAN) algorithm is used to cluster the radar echo data processed by CFAR. The multi-features including the scale features, time domain features and transform domain features are extracted. Secondly, features evaluation methods are used to evaluate interrelation among features, effective feature combinations are selected as inputs of the classifier. Finally, False alarm plots classified as clutters are eliminated. The experimental results show that proposed method can eliminate about 93% false alarm plots with less target loss rate. © 2022 IEEE.

关键词： Errors

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Combining Autoencoder and Category-Based Low-Rank Domain Adaptation Method for Multi-Site ASD Identification 3

Combining Autoencoder and Category-Based Low-Rank Domain Ada...

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3rd International Conference on Computer Vision and Pattern Analysis, ICCPA 2023

作者： Yu, Lei Wang, Li Cheng, Ming Xue, Minhao Wang, Lei School of Electrical Engineering and Control Science Nanjing Tech University Jiangsu Nanjing211816 China

ISBN: (纸本)9781510667563

With the development of deep learning in diagnosing autism spectrum disorder (ASD), multi-site resting-state functional magnetic resonance imaging (rs-fMRI) images have made excellent progress. However, there is a heterogeneous problem between the multi-site data caused by inconsistent data distribution. To address this problem, we propose a combining autoencoder and category-based low-rank domain adaptation (AECLR) method for multi-site ASD identification. The main idea is to extract non-linear features and alignment the distribution of these features. In the first stage, the unsupervised autoencoder is used to obtain the non-linear representation. In the second stage, the common structure between all domains was mined by the category-based low-rank constraints, which transform all source domain data and the target domain data into the common latent space and then the source domain data could be linearly represented by the target domain data. As a result, the ablation experiments of the AECLR method achieve independent performance and the AECLR method also obtain a satisfactory classification when compared with the state-of-the-art method. © 2023 SPIE.

关键词： Magnetic resonance imaging

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Promotional mechanism of activity of CeEuMnO_(x) ternary oxide for low temperature SCR of NO_(x)

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Journal of Rare Earths 2023年第6期41卷 965-974,I0006页

作者： Qiji Wang Yanhua Wang Liehao Wei Kaixin Wang Caixia Liu Degang Ma Qingling Liu Tianjin Key Laboratory of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityTianjin 300350China State Key Laboratory of Engines Tianjin UniversityTianjin 300072China

Due to strong synergistic effect of the elements,a series of XEuMnO_(x) ternary oxides(X=Ce,Ni,Co,Sb,Sn,Mo) were synthesized by one-pot co-precipitation method,and composite components were identified and optimized to maintain high activity and superior SO_(2)and H_(2)O endurance in selective catalytic reduction of NO_(x)with NH_(3)(NH_(3)-SCR).NO_(x)conversion of CeEuMnO_(x) ternary oxide catalysts attains more than 90% at 100-250℃,and finally achieves 74%under existence of 50×10^(-6)SO_(2) and 10 vol% H_(2)O at 230℃.The facile electron transfer through redox cycle of Mn^(3+)+Ce^(4+)■Mn4++Ce^(3+) and enhanced oxygen mobility can promote formation of more Mn species in high oxidation state and chemisorbed oxygen,accelerating oxidation of NO and the adsorbed NO_(2) formed can facilitate"fast SCR"reaction to improve low-temperature *** situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS)study reveals that addition of Ce to EuMnO_(x)catalyst boosts adsorption of NH_(3)and NO_(x)***_(3)species are activated as crucial intermediate(NH_(2))to promote NH_(3)-SCR *** research provides a novel material for practical deNO_(x)application of stationary source combustion flue gas in the future.

关键词： NH3-SCR CeEuMnO_(x)ternary oxide Lowetemperature activity In situ DRIFTS Rare earths

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Prediction Method of Mixed Gas Consumption in Hot Rolling Based on Improved K-Medoids Working Condition Division

Prediction Method of Mixed Gas Consumption in Hot Rolling Ba...

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2023 China Automation Congress, CAC 2023

作者： Li, Hao Xu, Demin Zhou, Fan Zhao, Jun Ministry of Education Key Laboratory of Intelligent Control and Optimization for Industrial Equipment China School of Control Science and Engineering Dalian University of Technology Dalian China

ISBN: (纸本)9798350303759

The prediction of mixed gas consumption in hot rolling production is of great significance in gas production-consumption balance and energy saving. However, in the actual production process of hot rolling, the complexity of production environment and the strong coupling of production processes lead to the complexity of working conditions, which brings great challenges to the prediction of mixed gas consumption. A prediction method of hot rolling mixed gas consumption based on improved K-Medoids working condition division is proposed in this paper. Based on Chebyshev's theorem, the method uses more robust median and median absolute deviation to evaluate the outliers in the cluster at each iteration in terms of distance, and further verifies from the perspective of density to complete the division of normal working conditions and abnormal working conditions. On this basis, considering the time dependence of hot rolling data, the prediction model of mixed gas consumption under corresponding working conditions was established by using the Long Short-Term Memory (LSTM) neural network. In order to verify the effectiveness of the proposed method, the actual industrial field data are used. The simulation results show that the proposed method has high prediction accuracy and is suitable for the prediction of mixed gas consumption in hot rolling. © 2023 IEEE.

关键词： Forecasting

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An origami-inspired nonlinear energy sink:design,modeling,and analysis

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Applied Mathematics and Mechanics(English Edition) 2025年第4期46卷 601-616页

作者： Youcheng ZENG Hu DING J.C.JI Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200444China School of Mechanical and Mechatronic Engineering University of Technology SydneyNSW 2007Australia Shaoxing Institute of Technology Shanghai UniversityShaoxing 312074Zhejiang ProvinceChina Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China

Designing,modeling,and analyzing novel nonlinear elastic elements for the nonlinear energy sink(NES)have long been an attractive research *** gravity is difficult to overcome,previous NES research mainly focused on horizontal vibration *** study proposes an origami-inspired NES.A stacked Miura-origami(SMO)structure,consisting of two Miura-ori sheets,is adopted to construct a nonlinear elastic *** adjusting the initial angle and the connecting crease torsional stiffness,the quasi-zero stiffness(QZS)and load-bearing capacity can be customized to match the corresponding mass,establishing the vertical *** dynamic model of the SMO-NES coupled with a linear oscillator(LO)is derived for vibrations in the vertical *** approximate analytical solutions of the dynamic equation are obtained by the harmonic balance method(HBM),and the solutions are verified *** parameter design principle of the SMO-NES is ***,the vibration reduction performance of the SMO-NES is *** results show that the proposed SMONES can overcome gravity and achieve quasi-zero nonlinear restoring ***,the SMO-NES has the ability of wide-frequency vibration reduction,and can effectively suppress vertical *** adjusting the initial angle and connecting the crease torsional stiffness of the SMO,the SMO-NES can be achieved with different loading weights,effectively suppressing the vibrations with different primary system masses and excitation *** conclusion,with the help of popular origami structures,this study proposes a novel NES,and starts the research of combining origami and NES.

关键词： nonlinear energy sink(NES) stacked Miura-origami(SMO) vertical vibration quasi-zero stiffness(QZS)

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Unformer: A Transformer-Based Approach for Adaptive Multiscale Feature Aggregation in Underwater Image Enhancement

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2025年第4期6卷 1024-1037页

作者： Qing, Yuhao Wang, Yueying Yan, Huaicheng Xie, Xiangpeng Wu, Zhengguang Shanghai University School of Mechatronic Engineering and Automation Shanghai200444 China East China University of Science and Technology School of Information Science and Engineering Shanghai200237 China Nanjing University of Posts and Telecommunications Institute of Advanced Technology Nanjing210023 China Zhejiang University Institute of Cyber-Systems and Control Hangzhou310027 China

Underwater imaging is often compromised by light scattering and absorption, resulting in image degradation and distortion. This manifests as blurred details, color shifts, and diminished illumination and contrast, thereby hindering advancements in underwater research. To mitigate these issues, we propose Unformer, an innovative underwater image enhancement (UIE) technique that leverages a transformer-based architecture for multiscale adaptive feature aggregation. Our approach employs a multiscale feature fusion strategy that adaptively restores illumination and detail features. We reevaluate the relationship between convolution and transformer to develop a novel encoder structure. This structure effectively integrates both long-range and short-range dependencies, dynamically combines local and global features, and constructs a comprehensive global context. Furthermore, we propose a unique multibranch decoder architecture that enhances and efficiently extracts spatial context information through the transformer module. Extensive experiments on three datasets demonstrate that our proposed method outperforms other techniques in both subjective and objective evaluations. Compared with the latest methods, Unformer has improved the peak signal-to-noise ratio (PSNR) by 19.5% and 14.8% respectively on the LSUI and EUVP datasets. The code is available at: https://***/yhflq/Unformer. © 2024 IEEE.

关键词： Light scattering

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On tuning of ADRC with competing design indices:a quantitative study

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control Theory and Technology 2023年第1期21卷 16-33页

作者： Yutao Zhao Yi Huang Zhiqiang Gao Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Electrical Engineering and Computer Science Center for Advanced Control TechnologiesCleveland State UniversityClevelandOH 44115USA

controller optimization has mostly been done by minimizing a certain single cost *** practice,however,engineers must contend with multiple and conflicting considerations,denoted as design indices(DIs)in this *** to account for such complexity and nuances is detrimental to the applications of any advanced control *** paper addresses this challenge heads on,in the context of active disturbance rejection controller(ADRC)and with four competing DIs:stability margins,tracking,disturbance rejection,and noise *** this end,the lower bound for the bandwidth of the extended state observer is first established for guaranteed closed-loop ***,one by one,the mathematical formula is meticulously derived,connecting each DI to the set of controller *** our best knowledge,this has not been done in the context of *** formulas allow engineers to see quantitatively how the change of each tuning parameter would impact all of the DIs,thus making the guesswork *** example is given to show how such analytical methods can help engineers quickly determine controller parameters in a practical scenario.

关键词： Uncertain systems Active disturbance rejection control(ADRC) Design indices(DIs) Extended state observer(ESO)

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Detecting physical laws from data of stochastic dynamical systems perturbed by non-Gaussianα-stable Lévy noise

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Chinese Physics B 2023年第5期32卷 337-342页

作者：陆凌弘志李扬刘先斌 State Key Laboratory of Mechanics and Control for Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China School of Automation Nanjing University of Science and TechnologyNanjing 210094China

Massive data from observations,experiments and simulations of dynamical models in scientific and engineering fields make it desirable for data-driven methods to extract basic laws of these *** present a novel method to identify such high dimensional stochastic dynamical systems that are perturbed by a non-Gaussianα-stable Lévy *** explicitly,firstly a machine learning framework to solve the sparse regression problem is established to grasp the drift terms through one of nonlocal Kramers–Moyal *** the jump measure and intensity of the noise are disposed by the relationship with statistical characteristics of the *** examples are then given to demonstrate the *** approach proposes an effective way to understand the complex phenomena of systems under non-Gaussian fluctuations and illuminates some insights into the exploration for further typical dynamical indicators such as the maximum likelihood transition path or mean exit time of these stochastic systems.

关键词： data-driven modelling noise-induced transitions Lévy noise Kramers–Moyal formuas

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Tailoring the d-band electronic structure of FePc by direct oxygen bridge on ZIF-8 derived ultrathin carbon shell to improve the oxygen reduction performance

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Nano Research 2025年第3期18卷 132-141页

作者： Xilin Zhang Shan Wang Zhiyi Sun Zhongjun Ma Huixuan Wang Zongxian Yang Qingfang Chang Wenxing Chen School of Physics Henan Normal UniversityXinxiang 453007China Energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control Ministry of EducationSchool of EnvironmentHenan Normal UniversityXinxiang 453007China

Molecular catalysts with well-defined single atom sites and coordination environments exhibit significant potential as oxygen reduction electrocatalysts,but suffering from the activity and stability ***,the ultrathin carbon shell supported FePc molecule electrocatalysts(FePc/TA-ONG-N),featuring with a direct oxygen bridging between FePc and carbon substrate,were designed and *** direct connection with oxygen atom on carbon substrate,certified by the Fourier transform infrared spectroscopy(FTIR)and extended X-ray absorption fine structure(EXAFS),can remarkably enhance the interaction and facilitate electron transfer from Fe,leading to an improved activity by reducing adsorption strength of intermediate species through lowering the d-band center *** resultant half-wave potential of 0.902 V together with a Tafel slope of 23.64 mV·dec^(−1)is superior to Pt/C and control *** catalyst holds a promise as air-cathode electrocatalyst in Zn-air battery with excellent operation stability exceeding 80 *** density functional theory(DFT)calculations and molecular dynamic simulations unveiled that the O-bridge can effectively stabilize the FePc molecule and function as electron buffer to donate/gain electrons to/from Fe atom during the adsorption of *** current findings are insightful for developing molecular catalysts with high performance through substrate engineering and axial coordination.

关键词： metal-organic framework axial coordination interfacial electron transfer iron phthalocyanine oxygen reduction reaction

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Sensorimotor Integration Mechanism for Precise Grasping Movements in Mixed Reality Environments 17

Sensorimotor Integration Mechanism for Precise Grasping Move...

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17th International Congress on Image and Signal Processing, BioMedical engineering and Informatics, CISP-BMEI 2024

作者： Zhuang, Ji Liu, Mengqi Cui, Xi Guo, Yafei Li, Ke Institute of Intelligent Medical Engineering School of Control Science and Engineering Shandong University Laboratory of Rehabilitation Engineering Jinan China Imperial College London Department of Life Science United Kingdom

ISBN: (纸本)9798331507398

The mechanism of sensorimotor integration involves how the brain integrates multisensory information to form a unified perception of movement and space. Precision grasping, a hand function unique to humans, is the foundation for various dexterous manipulations. However, the sensorimotor integration mechanism underlying precision grasping remains unclear, particularly when there is a discrepancy between visual and tactile information. This study aims to develop an immersive mixed-reality-based precision grasping control system, synchronously collecting multiple physiological signals to reveal the control mechanisms of precision grasping from two perspectives: central-peripheral coordination and perception-movement coupling. The results show that during precision grasping, conflicts between visual and tactile perception induce differences in oscillatory activity across multiple brain regions (p © 2024 IEEE.

关键词： Sensory feedback

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