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A Special Issue:“Co-optimization and mechanism design of multimodal energy systems under carbon constraints”

Global Energy Interconnection 2025年第2期8卷 I0002-I0003页

作者： Lin Cheng Xiaojun Wan Department of Electrical Engineering Tsinghua University Planning and Design Research Center Energy Internet Research InstituteTsinghua University State Key Laboratory of Power System Operation and Control Tsinghua University School of Electrical Engineering Beijing Jiaotong University

Against the backdrop of active global responses to climate change and the accelerated green and low-carbon energy transition,the co-optimization and innovative mechanism design of multimodal energy systems have become a significant instrument for propelling the energy revolution and ensuring energy *** increasingly stringent carbon emission constraints,how to achieve multi-dimensional improvements in energy utilization efficiency,renewable energy accommodation levels,and system economics-through the intelligent coupling of diverse energy carriers such as electricity,heat,natural gas,and hydrogen,and the effective application of market-based instruments like carbon trading and demand response-constitutes a critical scientific and engineering challenge demanding urgent solutions.

关键词： multimodal energy systems renewable energy accommodation energy utilization efficiency co optimization carbon constraints climate change carbon emission constraintshow mechanism design

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Development of an Adaptive Artifact Subspace Reconstruction Based on Hebbian/Anti-Hebbian Learning Networks for Enhancing BCI Performance

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IEEE Transactions on Neural Networks and Learning Systems 2024年第1期35卷 348-361页

作者： Tsai, Bo-Yu Diddi, Sandeep Vara Sankar Ko, Li-Wei Wang, Shuu-Jiun Chang, Chi-Yuan Jung, Tzyy-Ping Institute of Biomedical Engineering and the Brain Research Center National Yang Ming Chiao Tung University Hsinchu300 Taiwan Hsinchu300 Taiwan College of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu300 Taiwan Institute of Electrical and Control Engineering Institute of Biomedical Engineering Brain Research Center College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Department of Electronics and Electrical Engineering Hsinchu300 Taiwan Kaohsiung Medical University Department of Biomedical Science and Environment Biology Drug Development and Value Creation Research Center Kaohsiung807 Taiwan Taipei Veterans General Hospital Taipei11217 Taiwan National Yang Ming Chiao Tung University Brain Research Center School of Medicine Taipei112 Taiwan University of California San Diego Swartz Center for Computational Neuroscience San DiegoCA92093 United States

Brain-computer interface (BCI) actively translates the brain signals into executable actions by establishing direct communication between the human brain and external devices. Recording brain activity through electroencephalography (EEG) is generally contaminated with both physiological and nonphysiological artifacts, which significantly hinders the BCI performance. Artifact subspace reconstruction (ASR) is a well-known statistical technique that automatically removes artifact components by determining the rejection threshold based on the initial reference EEG segment in multichannel EEG recordings. In real-world applications, the fixed threshold may limit the efficacy of the artifact correction, especially when the quality of the reference data is poor. This study proposes an adaptive online ASR technique by integrating the Hebbian/anti-Hebbian neural networks into the ASR algorithm, namely, principle subspace projection ASR (PSP-ASR) and principal subspace whitening ASR (PSW-ASR) that segmentwise self-organize the artifact subspace by updating the synaptic weights according to the Hebbian and anti-Hebbian learning rules. The effectiveness of the proposed algorithm is compared to the conventional ASR approaches on benchmark EEG dataset and three BCI frameworks, including steady-state visual evoked potential (SSVEP), rapid serial visual presentation (RSVP), and motor imagery (MI) by evaluating the root-mean-square error (RMSE), the signal-to-noise ratio (SNR), the Pearson correlation, and classification accuracy. The results demonstrated that the PSW-ASR algorithm effectively removed the EEG artifacts and retained the activity-specific brain signals compared to the PSP-ASR, standard ASR (Init-ASR), and moving-window ASR (MW-ASR) methods, thereby enhancing the SSVEP, RSVP, and MI BCI performances. Finally, our empirical results from the PSW-ASR algorithm suggested the choice of an aggressive cutoff range of c =1-10 for activity-specific BCI applications and a moderat

关键词： Electroencephalography

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Energy-Efficient Data Collection over Underwater MI-Assisted Acoustic Cooperative MIMO WSNs

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China Communications 2023年第11期20卷 96-110页

作者： Qingyan Ren Yanjing Sun Song Li Bin Wang Zhengda Yu School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Department of Information Technology and Electrical Engineering ETH ZurichZurich 8092Switzerland School of Communication and Information Engineering Xi’an University of Science and TechnologyXi’an 710054China Xuzhou Engineering Research Center of Intelligent Industry Safety and Emergency Collaboration Xuzhou 221000China

Underwater magnetic induction(MI)-assisted acoustic cooperative multiple-input-multipleoutput(MIMO) has been recently proposed as a promising technique for underwater wireless sensor networks(UWSNs).For the more,the energy utilization of energy-constrained sensor nodes is one of the key issues in UWSNs,and it relates to the network *** this paper,we present an energy-efficient data collection for underwater MI-assisted acoustic cooperative MIMO wireless sensor networks(WSNs),including the formation of cooperative MIMO and relay link ***,the cooperative MIMO is formed by considering its expected transmission range and the energy balance of nodes with ***,from the perspective of the node’s energy consumption,the expected cooperative MIMO size and the selection of master node(MN) are ***,to improve the coverage of the networks and prolong the network lifetime,relay links are established by relay selection algorithm that using matching ***,the simulation results show that the proposed data collection improves its efficiency,reduces the energy consumption of the master node,improves the networks’ coverage,and extends the network lifetime.

关键词： cooperative MIMO cooperative MIMO size data collection heterogeneous UWSNs relay link establishment

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Time-extracting S-transform algorithm and its application in rolling bearing fault diagnosis

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Science China(Technological Sciences) 2022年第4期65卷 932-942页

作者： XU YongGang WANG Liang HU AiJun YU Gang Beijing Engineering Research Center of Precision Measurement Technology and Instruments Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Department of Mechanical Engineering North China Electric Power UniversityBaoding 071003China School of Electrical Engineering University of JinanJinan 250022China

Time-frequency(TF)analysis(TFA)is one of the effective methods to deal with non-stationary *** to their advantages,many experts and scholars have recently developed post-processing algorithms based on traditional *** them,shorttime Fourier transform(STFT)based post-processing algorithms have developed the ***,these methods rely heavily on the window length selected in STFT,which has great influence on the post-processing *** this paper,a postprocessing algorithm for effectively processing pulse signals was proposed and called time-extracting S-transform(TEST).The time-domain extraction method based on S-transform avoids the influence of uncertain *** comparing the performance of various TFA methods when processing analog signals,the proposed TEST can clearly show the pulse occurrence time under the premise of ensuring high TF *** actual signal proves that the method can be used for fault diagnosis of rolling bearings.

关键词： time-extracting S-transform time-frequency analysis pulse signal fault diagnosis short-time Fourier transform

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Simulation on atmospheric pressure barrier discharge with varying relative position between two wavy dielectric surfaces

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Chinese Physics B 2025年第3期34卷 474-481页

作者： Xue-Chen Li Wen-Jie Wan Xiao-Qian Liu Mo Chen Kai-Yue Wu Jun-Xia Ran Xue-Xia Pang Xue-Xue Zhang Jia-Cun Wu Peng-Ying Jia Hui Sun College of Physics Science and Technology Hebei UniversityBaoding 071002China Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques Ministry of EducationBaoding 071002China Department of Electrical Engineering Tsinghua UniversityBeijing 100084China Hebei Key Laboratory of Photo-Electricity Information and Materials Hebei UniversityBaoding 071002China University of Chinese Academy of Sciences College of Materials and Opto-Electronic TechnologyBeijing 100049China

As a popular approach to producing atmospheric pressure non-thermal plasma,dielectric barrier discharge(DBD)has been extensively used in various application *** this paper,DBD with wavy dielectric layers is numerically simulated in atmospheric pressure helium mixed with trace nitrogen based on a fluid *** varying relative position(phase difference(Δφ))of the wavy surfaces,there is a positive discharge and a negative discharge per voltage cycle,each of which consists of a pulse stage and a hump *** the pulse stage,maximal current increases with increasingΔφ.Results show that DBD with the wavy surfaces appears as discrete micro-discharges(MDs),which are self-organized to different patterns with varyingΔφ.The MDs are vertical and uniformly-spaced withΔφ=0,which are self-organized in pairs withΔφ=π/*** MD pairs are merged into some bright wide MDs withΔφ=π/*** addition,narrow MDs appear between tilted wide MDs withΔφ=3π/***Δφ=π,the pattern is composed of wide and narrow MDs,which are vertical and appear *** elucidate the formation mechanism of the patterns with differentΔφ,temporal evolutions of electron density and electric field are investigated for the positive ***,surface charge on the wavy dielectric layers has also been compared with differentΔφ.

关键词： dielectric barrier discharge wavy dielectric surface micro-discharge fluid model

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A nonsingular terminal sliding algorithm for swing and stance control of a prosthetic leg robot

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Applied Mathematical Modelling 2023年 113卷 13-29页

作者： Jafari, Maryam Mobayen, Saleh Bayat, Farhad Roth, Hubert Department of Electrical Engineering University of Zanjan Zanjan38791-45371 Iran Future Technology Research Center National Yunlin University of Science and Technology Yunlin Douliou64002 Taiwan Hubert Roth is with the Institute of Automatic Control Engineering University of Siegen Siegen Germany

The design of swing and stance control for path following of a prosthetic leg robot subject to uncertain dynamics and exterior disturbances is a serious issue, which affects the development of wearable robots. In wearable robots, parametric uncertainties and external disturbances are unavoidable problems. This problem is associated with practical engineering of wearable robots due to the actual swing and stance situations, where the combination of contact and tracking control objectives is highly complex. This paper proposes two novel finite-time controllers for a prosthetic leg robot with three degree-of-freedom. A prosthetic leg robot should emulate hip vertical displacement, thigh and knee angles according to human gaits in the presence of ground friction force and external disturbances. For the swing phase, a nonsingular fast terminal sliding mode control method is designed to track the reference trajectories fast and in the finite time without any non-singularity problem and chattering phenomenon. Moreover, the other designed controller can deal with input saturation by using a hyperbolic tangent function and an auxiliary system. For the stance phase, an impulse momentum sliding mode control scheme is introduced which allows the prosthetic leg robot to emulate the mechanics of human walking. Using the proposed controller, the robot imitates the patient momentum exchange and weight transfer in the stance phase. The proposed techniques cause the transition between contact and off-contact phases and contact phase itself. Finally, the simulation results verify the efficiency of the provided technique. In our future work, we will focus on employing this technique to a practical prosthesis legged robot. © 2022 Elsevier Inc.

关键词： Prosthetics

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MLD-MPC Approach for Three-Tank Hybrid Benchmark Problem

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Computers, Materials & Continua 2023年第5期75卷 3657-3675页

作者： Hanen Yaakoubi Hegazy Rezk Mujahed Al-Dhaifallah Joseph Haggège Research Laboratory in Automatic Control(LARA) National Engineering School of Tunis(ENIT)University of Tunis El ManarTunis1002Tunisia Department of Electrical Engineering College of Engineering in Wadi AlddawasirPrince Sattam bin Abdulaziz UniversityWadi Alddawasir11911Saudi Arabia Control and Instrumentation Engineering Department King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Interdisciplinary Research Center(IRC)for Renewable Energy and Power Systems King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia

The present paper aims at validating a Model Predictive control(MPC),based on the Mixed Logical Dynamical(MLD)model,for Hybrid Dynamic Systems(HDSs)that explicitly involve continuous dynamics and discrete *** proposed benchmark system is a three-tank process,which is a typical case study of *** MLD-MPC controller is applied to the level control of the considered tank *** study is initially focused on the MLD approach that allows consideration of the interacting continuous dynamics with discrete events and includes the operating *** feature of MLD modeling is very advantageous when an MPC controller synthesis for the HDSs is *** the MLD model of the system is well-posed,then the MPC law synthesis can be developed based on the Mixed Integer Programming(MIP)optimization *** solving this MIP problem,a Branch and Bound(B&B)algorithm is proposed to determine the optimal control ***,a comparative study is carried out to illustrate the effectiveness of the proposed hybrid controller for the HDSs compared to the standard MPC *** results show that the MLD-MPC approach outperforms the standardMPCone that doesn’t consider the hybrid aspect of the *** paper also shows a behavioral test of the MLDMPC controller against disturbances deemed as liquid leaks from the *** results are very satisfactory and show that the tracking error is minimal less than 0.1%in nominal conditions and less than 0.6%in the presence of *** results confirm the success of the MLD-MPC approach for the control of the HDSs.

关键词： Hybrid dynamic system model predictive control mixed logical dynamical model mixed integer programming three-tank hybrid system

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Distributed Secondary Frequency Regulation in AC Microgrid with Arbitrary Convergence Time control

Distributed Secondary Frequency Regulation in AC Microgrid w...

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2024 IEEE Sustainable Power and Energy Conference, iSPEC 2024

作者： Amrr, Syed Muhammad Ali, Mohammad Abushokor, Abdullah Zaery, Mohamed Al-Dhaifallah, Mujahed Hussain, S.M. Suhail Abido, Mohammad A. Control & Instrumentation Engineering Department Dhahran Saudi Arabia Zhcet Aligarh Muslim University Department of Electrical Engineering Aligarh India Kfupm Electrical Engineering Department Dhahran Saudi Arabia K.A.CARE Energy Research & Innovation Center Kfupm Dhahran Saudi Arabia Kfupm Dhahran Saudi Arabia SDAIA-KFUPM Joint Research Center for Artificial Intelligence Kfupm Dhahran Saudi Arabia

ISBN: (纸本)9798350395075

This paper presents a new approach for designing the arbitrary time-convergent distributed secondary frequency control for AC microgrid (MG). The proposed controller will regulate the frequencies of distributed generators (DGs) to the desired reference value within the user-defined arbitrarily selected time. In addition to restoring frequency, the designed scheme achieves optimal consensus for incremental costs, i.e., it effectively distributes the power load across all DGs. The convergence analysis of both tracking and consensus error is mathematically proven using the Lyapunov stability theory, ensuring arbitrary time convergence. The simulation analysis with comparative case studies demonstrates the superior performance of the proposed decentralized arbitrary time-convergent algorithm compared to existing fixed-time and finite-time approaches. © 2024 IEEE.

关键词： Microgrids

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A Novel Hybrid Transformer-Based Framework for Solar Irradiance Forecasting under Incomplete Data Scenarios

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IEEE Transactions on Industrial Informatics 2024年第6期20卷 8605-8615页

作者： Zhang, Hanjin Li, Bin Su, Shun-Feng Yang, Wankou Xie, Liping Southeast University School of Economics and Management Nanjing210096 China National Taiwan University of Science and Technology Department of Electrical Engineering Taipei106 Taiwan Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education School of Automation Nanjing210096 China Southeast University Shenzhen Research Institute Shenzhen518063 China

Accurate prediction of solar irradiance is crucial for the effective utilization of solar energy. However, in real-world scenarios, complex irradiance patterns and prevalent incomplete data pose challenges to precise forecasting, resulting in additional uncertainties and instability. To address these issues, this study proposes a novel irradiance forecasting model that integrates a Mask-Transformer data imputation module and a prediction module centered around the typical patterns representation mechanism. The Mask-Transformer leverages a mask modeling mechanism to model the context of missing data, facilitating accurate estimation of missing values and reducing noise and uncertainty in the input data. The typical patterns representation mechanism comprises a series decomposition module and a feature fusion module, providing the module with the capability to mitigate nonlinearity and nonstationarity in solar irradiance data. This enhancement leads to improved short-term forecasting performance while maintaining long-term forecasting capabilities. Experimental results on two datasets demonstrate that the proposed model exhibits sufficient robustness and accuracy, making it effective in scenarios with incomplete data. © 2005-2012 IEEE.

关键词： Forecasting

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Influence of bias voltage and oxygen addition on the discharge aspects of a diffuse argon plume in an atmospheric pressure plasma jet

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Plasma Science and Technology 2024年第12期26卷 75-81页

作者： Pengying JIA Guoxin HAN Xiupin DONG Kaiyue WU Junxia RAN Xuexia PANG Xuexue ZHANG Jiacun WU Xuechen LI College of Physics Science and Technology Hebei UniversityBaoding 071002People’s Republic of China Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques Ministry of EducationBaoding 071002People’s Republic of China Department of Electrical Engineering Tsinghua UniversityBeijing 100084People’s Republic of China Hebei Key Laboratory of Photo-Electricity Information and Materials Hebei UniversityBaoding 071002People’s Republic of China

A remote plasma,also referred to as a plasma plume(diffuse or filamentary),is normally formed downstream of an atmospheric pressure plasma *** this study,a diffuse plume is formed by increasing the bias voltage(U_(b))applied to the downstream electrode of an argon plasma jet excited by a negatively pulsed *** results indicate that the plume is filamentary when U_(b)is low,which transits to the diffuse plume with increasing U_(b).The discharge initiated at the rising edge of the pulsed voltage is attributed to the diffuse plume,while that at the falling edge contributes to the filament in the *** the diffuse plume,the discharge intensity decreases with the increasing oxygen content(C_o).Fast photography reveals that the diffuse plume results from a negative streamer,which has a dark region near the nozzle with C_o=0%.However,the dark region is absent with C_o=0.5%.From the optical emission spectrum,the electron density,electron excitation temperature,gas temperature,and oxygen atom concentration are investigated.

关键词： atmospheric pressure plasma jet diffuse plasma plume optical emission spectrum

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