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25th IEEE China Conference on System Simulation technology and its Application, CCSSTA 2024

作者： Liu, Hongbin Kong, Xiangyu Zhang, Delong Wang, Chunjie Jin, Hui Shao, Yangping Tianjin University of Technology Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin China Tianjin University Key Laboratory of Smart Grid Tianjin China

ISBN: (纸本)9798350366600

To address the problems of high PV output volatility and unstable DC system voltage control caused by environmental influences on offshore floating photovoltaic hydrogen production systems, this paper proposes a voltage control method based on voltage stabilization for the DC system model of PV storage hydrogen production. Aiming to improve PV power generation quality and enhance system stability, this control method includes maximum power point tracking (MPPT) control for the floating PV system and adaptive coordinated control for the hydrogen storage system. These controls enable the optimal utilization of light resources while ensuring stable bus voltage. Finally, the effectiveness of the control method was verified by simulation. © 2024 IEEE.

关键词： Hydrogen storage

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Comparison of Three Data-Driven Networked Predictive control Methods for a Class of Nonlinear Systems

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IEEE/CAA Journal of Automatica Sinica 2022年第9期9卷 1714-1716页

作者： Zhong-Hua Pang Xue-Ying Zhao Jian Sun Yuntao Shi Guo-Ping Liu the Key Laboratory of Fieldbus Technology and Automation of Beijing North China University of TechnologyBeijing 100144China the State Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of TechnologyBeijing 100081China the Center for Control Science and Technology Southern University of Science and TechnologyShenzhen 518055China

Dear Editor,In this letter,in order to deal with random network delays and packet losses in a class of networked nonlinear systems,three data-driven networked predictive control methods are *** closed-loop systems and... 详细信息

关键词： letter Nonlinear nonlinear

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Calibration of the Solar X-ray Detector on-board the Macao Science Satellite-1B for Soft X-ray Detection

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Science China Earth Sciences 2025年第1期68卷 11-26页

作者： Man-Hei NG Xiaoping ZHANG Jianwu CHEN Yongqiang SHI Fuchang ZUO Wenxi PENG Weichun FU Liansheng LI Pengwei LUO Chi-Long TANG Guozheng ZHANG Zhiwu MEI Li WANG Cunhui LI Jiaming OU Yanyan Xu State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacao999078China Space Optoelectronic Measurement and Perception Laboratory Beijing Institute of Control EngineeringBeijing100190China Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of PhysicsLanzhou730000China China National Space Administration(CNSA) Macao Center for Space Exploration and ScienceMacao999078China

The Solar X-ray Detector(SXD)on-board the Macao Science Satellite-1B(MSS-1B)was successfully launched via the Chinese Long March-2C rocket on 21 May 2023,and commenced operations in early June of the same *** MSS-1B/Soft X-ray Detection Units(SXDUs)employ two silicon drift detectors(SDDs),providing a wide range of energy spectra spanning from 0.7 to 24 ***,the SXDUs deliver a high-resolution capability of 0.14 keV@5.9 keV and operate with a time cadence of 1 ***,we perform thorough calibrations of the MSS-1B/SXDUs,employing a combination of ground experiments and *** addition,quantitative analysis comparing the flux measurements obtained by the MSS-1B/SXDUs to the data collected by the Geostationary Operational Environmental Satellite(GOES),provides compelling evidence of their ***,the preliminary spectral analysis results showcase the robustness and expected performance of the MSS-1B/SXDUs,unlocking their potential for facilitating the study of dynamic evolution of solar ***,the innovative MSS-1B/Solar X-ray Detector facilitates concurrent observations of solar soft and hard X-rays,thereby making valuable contributions to the advancements in solar research.

关键词： Macao Science Satellite-1B(MSS-1B) Calibration Solar X-Ray Detector Spectrometer Soft X-rays Solar flares Solar abundances

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Optimal layout design for photovoltaic shadow occlusion based on Sketchup and PVsyst 25

Optimal layout design for photovoltaic shadow occlusion base...

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25th IEEE China Conference on System Simulation technology and its Application, CCSSTA 2024

作者： Yu, Zilong Wang, Chunjie Kong, Xiangyu Yu, Lujie Shao, Yangping Jin, Hui Tianjin University of Technology Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin China Tianjin University Key Laboratory of Smart Grid Tianjin China

ISBN: (纸本)9798350366600

As photovoltaic (PV) systems gain global popularity, effectively minimizing the impact of shading on PV system performance has become a significant design challenge. This paper introduces a systematic and comprehensive shading analysis method that integrates SketchUp and PVsyst software;by utilizing SketchUp for customized 3D modeling and high-precision shading analysis, this method can effectively identify and address shading issues that are difficult to detect using traditional methods, thereby optimizing module layout and enhancing overall system performance. Subsequently, PVsyst is used to simulate and evaluate system efficiency and losses under different conditions. The aim is to improve the accuracy and efficiency of PV system design and to provide a new approach to optimizing photovoltaic system design by combining 3D modeling with performance simulation. © 2024 IEEE.

关键词： Photovoltaic effects

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Numerical Investigation of the Spectral Transmission Characteristics of T-shaped Metal Nanohole Array 7

Numerical Investigation of the Spectral Transmission Charact...

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7th Global intelligent Industry Conference, GIIC 2024

作者： Li, Hang Zhang, Weiguo Xia, Liangping Dang, Suihu Zhang, Man Du, Chunlei Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing400714 China Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems Yangtze Normal University Chongqing408100 China

ISBN: (纸本)9781510682986

Surface plasmon polaritons can manipulate and transmit light fields at the nanoscale, offering a wide range of applications in areas such as optoelectronic detection, optical filtering, novel light sources, and biosensing. This study investigated the transmission enhancement characteristics of conventional nanohole arrays through finite-difference time-domain (FDTD) simulations. Additionally, T-shaped metal nanoholes are designed based on the distinct spectral transmission properties of rectangular holes under varying polarized light conditions. Research has demonstrated that compared with their rectangular counterparts, T-shaped metal nanoholes exhibit polarization selectivity and sharper transmission spectra. Furthermore, this study investigated the impact of different components within the structure of T-shaped metal nanoholes on light field modulation by analyzing the electric field distribution. Finally, the influence of various parameters, such as the period, film thickness, and hole size, on the transmission spectrum of T-shaped metal nanoholes is investigated. © 2024 SPIE.

关键词： Light transmission

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Highly Reliable Multilayer Encryption Scheme With Constellation Shaping Based on Joint Index Modulation

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Journal of Lightwave technology 2025年第12期43卷 5689-5698页

作者： Zhu, Dongxu Liu, Bo Ren, Jianxin Mao, Yaya Song, Xiumin Chen, Shuaidong Zhao, Lilong Yin, Mengtong Dai, Wei Chen, Guoqing Cai, Junjie Institute of Optics and Electronics Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory Cultivation Base of Atmospheric Optoelectronic Detection and Information Fusion Nanjing University of Information Science & Technology Nanjing210044 China Jiangsu International Joint Laboratory for Meteorological Photonics and Optoelectronic Detection Nanjing University of Information Science & Technology Nanjing210044 China Jiangsu Engineering Research Center for Intelligent Optoelectronic Sensing Technology of Atmosphere Nanjing University of Information Science & Technology Nanjing210044 China Beijing University of Posts and Telecommunications Beijing100876 China Department of Electronic Engineering Tsinghua University Beijing100084 China

This paper proposes a highly reliable multilayer encryption scheme with constellation shaping based on joint index modulation. Multilayer encryption is used to ensure the security of the scheme. We utilize the 3D-Zhang chaotic system to realize the multidimensional perturbation of bits, subcarriers, and symbols of the original signal. The key information is masked with the signal using joint index modulation (JIM). The cooperative transmission of the initial value of the chaotic system is realized through the position information of the silent subcarriers and the constellation modes of the corresponding subcarriers. The scheme interleaves the initial values of the two chaotic systems to encode them as index bits, realizing the first layer of masked keys. Additional constellation shaping is achieved by optimizing the index mapping rules and changing the distribution of constellation points in the center and in the dual mode. The rotational encryption of the constellation is realized using a one-dimensional sinusoidal chaotic system after the completion of JIM, and the second layer of spherical shell masking of the key information is completed. The experimental implementation demonstrates the successful transmission of a 14 Gb/s 3D-JIM -8QAM signal over a 2 km weakly coupled seven-core fiber. Results confirm that the multi-layer encryption approach ensures secure signal transmission even under partial key leakage, without introducing degradation to the system's transmission performance. Compared to a random constellation distribution, the optimized index mapping scheme provides a coding gain of 0.75 dB at an FEC (Forward Error Correction) threshold of 3.8×10-3. The proposed scheme achieves error-free key transmission, with a bit error rate (BER) consistently maintained at 0. Notably, even minor key misalignments result in a BER of 0.5, facilitating timely key updates. The scheme boasts a vast key space of 10150, effectively resisting brute-force attacks. Due to its hi

关键词： Forward error correction

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Odor Source Search with a Wolf Pack Algorithm via Multi-UAV in Outdoor Environment 6

Odor Source Search with a Wolf Pack Algorithm via Multi-UAV ...

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6th International Conference on Industrial Artificial Intelligence, IAI 2024

作者： Wu, Wen-Qiang Li, Ji-Gong Yang, Jing School of Automation and Electrical Engineering Tianjin University of Technology and Education Tianjin Key Laboratory of Information Sensing and Intelligent Control Tianjin China

ISBN: (纸本)9798350356618

Concerning the problem of odor source search with robots in a large outdoor environment, an odor source search method based on the improved wolf pack algorithm (IWPA) is proposed, in which each wolf corresponds to an unmanned aerial vehicle (UAV). The environment is firstly traversed by the UAVs in partitions by using rectangular wave- shaped paths. Once odor plume is detected by any UAV, the WPA is applied to guide the UAVs towards the odor source. Considering the limited number of UAVs, in order to improve the utilization rate of UAVs, the wolf pack is simplified into two roles: the alpha wolf and other wolves. Meanwhile, to avoid collisions between UAVs and enable UAVs to fully sample around the suspected target position, a besieging algorithm based on a virtual force field is designed to calculate next flight direction for the UAVs. During this period, the odor source position is determined by the alpha wolf which is constantly elected by comparing the fitness values of all wolves. Simulation results show that the IWPA method can find the odor source in short time without falling into local extremum, demonstrating good convergence and being suitable for odor source search tasks in outdoor environments. © 2024 IEEE.

关键词： Unmanned aerial vehicles (UAV)

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Semisupervised Transfer Boosting (SS-TrBoosting)

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2024年第7期5卷 3431-3444页

作者： Deng, Lingfei Zhao, Changming Du, Zhenbang Xia, Kun Wu, Dongrui Key Laboratory of Image Processing and Intelligent Control Ministry of Education School of Artificial Intelligence and Automation Huazhong University of Science and Technology Wuhan 430074 China and also with Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518063 China

Semisupervised domain adaptation (SSDA) aims at training a high-performance model for a target domain using few labeled target data, many unlabeled target data, and plenty of auxiliary data from a source domain. Previous works in SSDA mainly focused on learning transferable representations across domains. However, it is difficult to find a feature space where the source and target domains share the same conditional probability distribution. Additionally, there is no flexible and effective strategy extending existing unsupervised domain adaptation (UDA) approaches to SSDA settings. In order to solve the above two challenges, we propose a novel fine-tuning framework, semisupervised transfer boosting (SS-TrBoosting). Given a well-trained deep learning-based UDA or SSDA model, we use it as the initial model, generate additional base learners by boosting, and then use all of them as an ensemble. More specifically, half of the base learners are generated by supervised domain adaptation, and half by semisupervised learning. Furthermore, for more efficient data transmission and better data privacy protection, we propose a source data generation approach to extend SS-TrBoosting to semisupervised source-free domain adaptation (SS-SFDA). Extensive experiments showed that SS-TrBoosting can be applied to a variety of existing UDA, SSDA, and SFDA approaches to further improve their performance. © 2020 IEEE.

关键词： Supervised learning

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Distributed model-free adaptive predictive control of traffic lights for multiple interconnected intersections

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Science China(Information Sciences) 2023年第9期66卷 98-99页

作者： Xinfeng RU Chenyi MEI Weiguo XIA Peng SHI Key Laboratory of Intelligent Control and Optimization for Industrial Equipment(Dalian University of Technology) Ministry of Education School of Electrical and Electronic Engineering The University of Adelaide Research and Innovation Centre Obuda University

Over the last few decades, urban traffic congestion has been an out-of-control issue globally. Several well-known micromodeling traffic control strategies have been developed for traffic light control. Previous work [... 详细信息

关键词： Fuel economy

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Fast numerical computation on the harmonic Arnoldi algorithm for large-scale φ functions 7

Fast numerical computation on the harmonic Arnoldi algorithm...

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7th IEEE Advanced Information technology, Electronic and Automation control Conference, IAEAC 2024

作者： Zhang, Lu Chen, Lei Xuzhou University of Technology School of Mathematics and Statistics Xuzhou China Xuzhou University of Technology Jiangsu Province Key Laboratory of Intelligent Industry Control Technology Xuzhou China

ISBN: (纸本)9798350339161

In the problem of complex networks, it is often necessary to calculate matrix exponential function which is a special case of φ functions arising from exponential integrators. However, the computational overhead of matrix exponential function is very high if the matrix of networks is large scale. For generality, in this paper, we consider the fast computation of large-scale φ functions. In the previous work (G. Wu, L. Zhang, T. Xu, Adv. Comput. Math., 42(2016) 505-541.), we have given a thick-restated harmonic Arnoldi (TRHA) method for approximating φ functions. However, in this algorithm, one needs to solve initial value problems frequently in the practical computation. When the time variable t approaches to zero, it is not easy to solve these initial value problems and is time-consuming. To overcome this problem, in the current work, we propose the exponential quadrature rule (EQR) method for solving the initial value problems. The major benefit of our EQR method is that we can avoid the time t approaching to zero and then reduce the computational time. Numerical examples demonstrate the effectiveness of our new method for approximating large-scale φ functions. © 2024 IEEE.

关键词： Initial value problems

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