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Data Driven Control and Learning Systems (DDCLS)

作者： Hui Wu Yan Wang Junyu Lin Weidong Yang Yanwei Wang Ying Zheng The Key Laboratory of Image Information Processing and Intelligent Control Huazhong University of Science and Technology Wuhan China Zhengzhou University of Light Industry Zhengzhou China Wuhan Institute of Technology Wuhan China

ISBN: (数字)9781728159225

ISBN: (纸本)9781728159232

This paper proposes a novel fault classification method via convolutional neural network with multi-channel and multi-head along the time dimension, which is defined as MM-CNN. The MM-CNN extracts features of industrial process data by convolutional layers from local to global level. Unlike traditional methods, this method can capture the independent features of every process variable and the relevant characteristics from sensor data to learn more useful latent fault patterns. Besides, a data preprocessing approach is proposed to transform original data for convolutional neural network. Finally, for all the all 21 faults in Tennessee Eastman(TE) process, this paper compares the proposed method with the published methods and a architecture which combines the convolutions of multi-head and a bidirectional Long Short-Term Memory (Bi-LSTM) layer in fault classification. The simulation results show that the method has better classification performance than the state-of-the-art methods.

关键词： Feature extraction Time series analysis Deep learning Data models Data mining Convolutional neural networks Convolution

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A Robust Matching Method for Optical and SAR images Based on Coarse-to-Fine Mechanism

A Robust Matching Method for Optical and SAR Images Based on...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Cong Li Shuxuan Chen Kun Sun Yi Liang National Laboratory of Radar Signal Processing Xidian University Xi'an China National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing Aerospace Automatic Control Institute Beijing China

ISBN: (数字)9781728163741

ISBN: (纸本)9781728163758

Although image matching techniques have been developed in the last decades, automatic optical-synthetic aperture radar (SAR) image matching is still a challenging task due to significant nonlinear intensity differences between such images. In this paper, a new method of coarse-to-fine heterogeneous image matching based on contour features is proposed. After images preprocessing, a Canny operator is used to extract open-loop contour features, and the angle feature of local feature points is used to complete coarse matching. Finally, constructing contour tree descriptors of coarse matching pairs, and calculating the contour distance is proposed to obtain the fine matching result. The experimental results show the effectiveness and robustness of this method.

关键词： Radar polarimetry Optical imaging Adaptive optics Feature extraction Optical reflection Nonlinear optics Optical filters

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Chromatic forecasting hydrogels for anti-icing applications

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Nature communications 2025年第1期16卷 4881页

作者： Wenxuan Hou Xiaofei Chen Dan Wang Yanyan Cao Hongzhong Du Gengchen Li Zhuoheng Gan Yifei Yan Chong Gao Fang Hu Zhengxu Cai Ye Xu Zhiyuan He School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China. Tangshan Research Institute Beijing Institute of Technology Tangshan 063000 China. Biomaterials Research Center School of Biomedical Engineering Guangdong Provincial Key Laboratory of Medial Image Processing Southern Medical University Guangzhou 510515 China. School of Mechanical Engineering and Automation Beihang University Beijing 100191 China. School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China. hezy@***. Tangshan Research Institute Beijing Institute of Technology Tangshan 063000 China. hezy@***.

Icing forecast provides advanced notification, enabling preemptive anti-icing treatments to prevent facility damage and minimize economic losses from unexpected icing events. However, in real-world environments and practical applications, current technologies struggle to accurately predict ice formation on solid surfaces. This difficulty arises from the random and unpredictable nature of ice nucleation, influenced by variable weather conditions, diverse ice-nucleating agents, complex surface properties, and uncertain material defects or contamination. Herein, inspired by the role of ice-nucleating proteins (INPs) in cellular responses to low-temperature stress, we develop an innovative icing forecast hydrogel (IFH) device that encapsulates INPs. By simply regulating the INP content, the advance forecast time for icing can be precisely controlled over a wide temperature range from -6 to -28 C. To enhance forecasting accuracy, a color-coded grading system is implemented. The anti-icing application of this IFH device on wind turbines has proven its effectiveness, as it activated the de-icing system 70 min prior to real ice accretion on wind turbine blade, resulting in an additional 1898 kWh of electricity generated over two h. Our study presents a strategy for icing forecast, demonstrating its practical utility in wind power field and its potential for various anti-icing applications.

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A polynomial chaos approach to robust H∞ static output-feedback control with bounded truncation error

arXiv

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arXiv 2021年

作者： Wan, Yiming Shen, Dongying E. Lucia, Sergio Findeisen, Rolf Braatz, Richard D. Artificial Intelligence and Automation Huazhong University of Science and Technology Key Laboratory of Image Processing and Intelligent Control Ministry of Education Wuhan430074 China Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States TU Dortmund University Dortmund44227 Germany Otto-von-Guericke University Magdeburg Magdeburg39106 Germany

This article considers the H∞ static output-feedback control for linear time-invariant uncertain systems with polynomial dependence on probabilistic time-invariant parametric uncertainties. By applying polynomial chaos theory, the control synthesis problem is solved using a high-dimensional expanded system which characterizes stochastic state uncertainty propagation. A closed-loop polynomial chaos transformation is proposed to derive the closed-loop expanded system. The approach explicitly accounts for the closed-loop dynamics and preserves the L2-induced gain, which results in smaller transformation errors compared to existing polynomial chaos transformations. The effect of using finite-degree polynomial chaos expansions is first captured by a norm-bounded linear differential inclusion, and then addressed by formulating a robust polynomial chaos based control synthesis problem. This proposed approach avoids the use of high-degree polynomial chaos expansions to alleviate the destabilizing effect of truncation errors, which significantly reduces computational complexity. In addition, some analysis is given for the condition under which the robustly stabilized expanded system implies the robust stability of the original system. A numerical example illustrates the effectiveness of the proposed approach. © 2021, CC BY.

关键词： Feedback control

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Research on Coordinated Coverage of Non-Lambertian Optical Wireless Communications

Research on Coordinated Coverage of Non-Lambertian Optical W...

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International Conference on Computer and Communications (ICCC)

作者： Jupeng Ding Chih-Lin I Jintao Wang Hui Yang Lili Wang Key Laboratory of Signal Detection and Processing in Xinjiang Uygur Autonomous Region School of Information Science and Engineering Xinjiang University Uygur China China Mobile Research Institute Beijing China Beijing National Research Center for Information Science and Technology Tsinghua University Beijing China School of Information and Electrical Engineering Ludong University Yantai China

ISBN: (纸本)9781665409513

To a large extent, the performance of wireless optical communication system is affected by the light source radiation characteristics. Previous works are limited to rotationally symmetric Lambertian beam configurations, which fail to support target location oriented coordinated coverage. Different from the existing research, this paper proposes a coordinated coverage enhancement scheme based on asymmetric non-Lambertian optical beam configuration. Without loss of generality, this paper presents numerical analysis of coordinated and non-coordinated coverage performance in typical medium-sized indoor application scenario. Compared with non-coordinated coverage, the numerical results illustrate that the proposed coordinated coverage scheme could introduce about 4.08 dB SNR gain without transmission power increase. Therefore, non-Lambertian beam cooperation should be viewed as one efficient wireless optical communication technology.

关键词： Wireless communication Integrated optics Optical losses Numerical analysis Optical switches Optical fiber communication Optical transmitters

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Alternate INRAE-Bordeaux Soil Moisture and L-Band Vegetation Optical Depth Products from SMOS and SMAP: Current Status and Overview

Alternate INRAE-Bordeaux Soil Moisture and L-Band Vegetation...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Xiaojun Li Roberto Fernandez-Moran F. Frappart Lei Fan Gabrielle De Lannoy Xiangzhuo Liu Huan Wang Zanping Xing Mengjia Wang Yao Xiao C. Moisy Jean-Pierre Wigneron INRAE UMR1391 ISPA Villenave d'Ornon France Image Processing Lab (IPL) University of Valencia Valencia Spain Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing China Department of Earth and Environmental Sciences KU Leuven Heverlee Belgium College of Urban and Environmental Sciences Key Laboratory for Earth Surface Processes of the Ministry of Education Peking University Beijing China Cryosphere Research Station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and Resource Chinese Academy of Sciences Lanzhou China School of Geoscience and Technology Zhengzhou University China

Between 2018 and 2022, INRAE Bordeaux (IB) has developed a series of soil moisture (SM) and L-band Vegetation Optical depth (L-VOD) retrieval products from SMOS and SMAP, which are currently the only two operational L-band passive microwave satellite missions. These IB products rely on a two-parameter inversion of the L-MEB model (L-band Microwave Emission of the Biosphere) which requires little ancillary information. The products are found to be accurate, and very well-suited for application in hydrology, agriculture, climate and vegetation monitoring. In this communication, we present an overview of the development, evaluation and new applications of these IB SM or L-VOD products.

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RGB-based combustion state classification and stability analysis of SOFC afterburner: effects of fuel utilization and steam-to-carbon ratio

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Fuel 2025年 402卷

作者： Jingjing Wang Shuyu Zhang Jingang Lai Jiashu Jin Chun Zou Jung-Sik Kim Zhonghua Deng Yuanwu Xu Xi Li School of Artificial Intelligence and Automation Key Laboratory of Image Processing and Intelligent Control of Education Ministry Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 China Sino-French Engineer School/School of General Engineering Beihang University Beijing 100191 China Wuhan Huamao Automation Co. Ltd. Wuhan 430205 China School of Artificial Intelligence and Automation Wuhan University of Science and Technology Wuhan 430081 China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518055 China

Solid oxide fuel cell (SOFC) systems efficiently convert chemical energy into electricity but produce high-temperature exhaust gases containing unreacted fuels. The afterburner combusts these residual fuels to enhance heat recovery and system efficiency, with its performance influenced by stack fuel composition variations. This study investigates how fuel utilization rate ( U f ) and steam-to-carbon ratio (S/C) affect afterburner combustion characteristics in a 1 kW methane-reformed SOFC system. Results showed maximum afterburner temperature decreased from 981.3 K to 835 K as U f increased to 0.6, while S/C minimally impacted temperature distribution. A dimensionless stability index was developed to quantitatively assess combustion performance. An image-based analysis approach extracted five key parameters describing flame characteristics under varying conditions. These parameters supported the development of a three-tier hierarchical classification framework to identify weak, stable, and unstable combustion states, achieving an overall recognition accuracy of 74.5 %. These findings provide insights into SOFC operating parameters, residual stack fuel compositions, and afterburner stability relationships. The proposed assessment methodology offers guidance for optimizing thermal management and improving energy recovery efficiency in SOFC systems.

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On q-ary shortened-1-perfect-like codes

arXiv

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arXiv 2021年

作者： Shi, Minjia Wu, Rongsheng Krotov, Denis S. Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Mathematics Sciences Anhui University Anhui Hefei230601 China School of Mathematical Sciences University of Science and Technology of China Anhui Hefei230026 China Sobolev Institute of Mathematics pr. Akademika Koptyuga 4 Novosibirsk630090 Russia

We study codes with parameters of q-ary shortened Hamming codes, i.e., (n = (qm − q)/(q − 1), qn−m, 3)q. Firstly, we prove the fact mentioned in 1998 by Brouwer et al. that such codes are optimal, generalizing it to a bound for multifold packings of radius-1 balls, with a corollary for multiple coverings. In particular, we show that the punctured Hamming code is an optimal q-fold packing with minimum distance 2. Secondly, for every admissible length starting from n = 20, we show the existence of 4-ary codes with parameters of shortened 1-perfect codes that cannot be obtained by shortening a 1-perfect *** Codes 94B05, 94B65 Copyright © 2021, The Authors. All rights reserved.

关键词： Optimal systems

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Secure Optical Wireless Links with Dynamic Beam and Diversity Receiver

Secure Optical Wireless Links with Dynamic Beam and Diversit...

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IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC)

作者： Jupeng Ding Chih Lin I Jintao Wang Hui Yang Lili Wang Key Laboratory of Signal Detection and Processing in Xinjiang Uygur Autonomous Region School of Information Science and Engineering Xinjiang University China China Mobile Research Institute Beijing China Department of Electronic Engineering Beijing National Research Center for Information Science and Technology Tsinghua University Beijing China School of Information and Electrical Engineering Ludong University Yantai China

ISBN: (纸本)9781665405836

Optical wireless communication (OWC) has emerged as one promising candidate to mitigate the frequency spectrum crisis. Due to the broadcast nature of OWC channel, physical layer security (PLS) techniques have been considered and explored to improve the transmission confidentiality of OWC links. However, almost all current schemes focus on scenarios including multiple transmitters and fail to match the scenarios with limited transmitters, even single transmitter. For addressing this issue, in this work, the dynamic optical beam based PLS enhancement scheme is proposed. Unlike conventional Lambertian beam based technique paradigm, the above scheme tentatively utilize the commercially available non-Lambertian beam to configure the secure OWC links. Numerical results show that, compared with about 1.10 bps/Hz average secrecy capacity (SC) of the conventional configuration, up to 1.93 bps/Hz average SC gain could be provided by the proposed dynamic beam scheme. Moreover, this potential gain will be increased to about 2.39 bps/Hz when the diversity combing is available for the legitimate user receiver.

关键词： Wireless communication Integrated optics Measurement Conferences Optical fiber networks Physical layer security Optical receivers

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Mathematical Modeling of Shear Stress and Direct Shear Test for Compressible Soil: Case of Soil Bordering the Wouri River

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World Journal of Engineering and technology 2021年第3期9卷 385-406页

作者： Michael Soup Teoua Ouagni François Ngapgue Fabien Kenmogne Alain Soup Tewa Kammogne Simon Ngoh Koumi Dschang School of Science and Technology (DSST) Department of Physics Mechanical Unit of Research and Modeling Physical Systems Energy-Mechanic University of Dschang Cameroon Dschang Cameroon Department of Civil Engineering Fotso Victor Institute of Technology University of Dschang Bandjoun Cameroon Department of Civil Engineering Higher Teacher Training College of Technical Education University of Douala Douala Cameroon Laboratory of Condensed Matter Electronics and Signal Processing (LAMACETS) Faculty of Sciences University of Dschang Dschang Cameroon Department Thermal Engineering and Energy Douala University Institute of Technology Douala Cameroon

This paper focuses on the development of the mathematical model of shear stress by direct shear test for compressible soil of the littoral region, which will be a great tool in the hand of geotechnical engineers. The most common use of a shear test is to determine the shear strength which is the maximum shear stress that a material can withstand before the failure occurs. This parameter is useful in many engineering designs such as foundations, roads and retaining walls. We carried out an experimental laboratory test of ten samples of undisturbed soil taken at different points of the border of Wouri river of Cameroon. The samples were collected at different depths and a direct shear test was conducted. The investigations have been performed under constant vertical stresses and constant sample volume with the aim to determine the frictional angle and the cohesion of the compressible soil which are so important to establish the conditions of buildings stability. Special care was taken to derive loading conditions actually existing in the ground and to duplicate them in the laboratory. Given that the buildings constructed in this area are subjected to settlement, landslide, and punch break or shear failure, the cohesion and the frictional angle are determined through the rupture line after assessed the mean values of the shear stress for the considered ten samples. The bearing capacity of the soil, which is the fundamental soil parameter, was calculated. From the laboratory experimental results, the least squared method was used to derive an approximated mathematical model of the shearing stress. Many optimizations methods were then considered to reach the best adjustment.

关键词： Direct Shear Test Normal and Critical Stresses Frictional Angle Bearing Capacity Mathematical Model

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