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2024 International Conference on Virtual Reality, Image and Signal Processing, ICVISP 2024

作者： Pu, Huayan Chen, Xiaofeng Ding, Jiheng School of Mechatronic Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9798400710926

In the field of vibration signal denoising, the empirical mode decomposition (EMD) and the enhanced empirical mode decomposition (EEMD) techniques have been widely employed. However, these methods are subject to limitations, including the potential for modal aliasing and signal residuals, which may affect the accuracy and reliability of denoising results in certain applications. This study addresses these concerns by proposing a multilevel signal denoising method utilizing Complementary Ensemble Empirical Mode Decomposition (CEEMD) and applies it to vibration input denoising. Firstly, this paper introduces the basic principle of CEEMD, which constitutes a refinement of empirical mode decomposition and can better solve the problems of mode aliasing and signal residuals. Subsequently, this paper proposes a method for evaluating the complexity of signal components using sample entropy as a basis for denoising, thereby enabling selective denoising of vibration signals. Following signal decomposition, we utilise Singular Spectrum Analysis (SSA) to denoise the signal components, which further enhances the denoising effect. To validate the efficacy of the proposed method, we conducted simulation experiments and actual data comparisons. The experimental results demonstrate that our proposed multilevel signal denoising method effectively improves the denoising effect of vibration signals while reducing modal aliasing and signal residuals. In conclusion, the CEEMD-based multilevel signal denoising method proposed in this study represents an efficacious approach for further investigation in the domain of input signal processing, which is of paramount importance for enhancing the quality and dependability of the input signal. © 2024 Copyright held by the owner/author(s).

关键词： Empirical mode decomposition

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Zeroth-Order Methods for Online Distributed Optimization with Strongly Pseudoconvex Cost Functions

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Journal of Systems Science and Information 2024年第1期12卷 145-160页

作者： Xiaoxi YAN Muyuan MA Kaihong LU School of Electrical and Information Engineering Jiangsu UniversityZhenjiang 212013China School of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China

This paper studies an online distributed optimization problem over multi-agent *** this problem,the goal of agents is to cooperatively minimize the sum of locally dynamic cost *** from most existing works on distributed optimization,here we consider the case where the cost function is strongly pseudoconvex and real gradients of objective functions are not *** handle this problem,an online zeroth-order stochastic optimization algorithm involving the single-point gradient estimator is *** the algorithm,each agent only has access to the information associated with its own cost function and the estimate of the gradient,and exchange local state information with its immediate neighbors via a time-varying *** performance of the algorithm is measured by the expectation of dynamic *** mild assumptions on graphs,we prove that if the cumulative deviation of minimizer sequence grows within a certain rate,then the expectation of dynamic regret grows ***,a simulation example is given to illustrate the validity of our results.

关键词： multi-agent systems strongly pseudoconvex function single-point gradient estimator online distributed optimization

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Application Analysis of Multiple Neurons Connected with Fast Inhibitory Synapses

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Journal of Bionic engineering 2024年第4期21卷 1905-1918页

作者： Wen Duan Weihai Chen Jianhua Wang Zhongcai Pei Jingmeng Liu Jianer Chen School of Automation Science and Electrical Engineering Beihang UniversityXueyuan RoadBeijing100191China Hangzhou Innovation Institute Beihang UniversityChuanghui StreetHangzhou310051ZhejiangChina School of Electrical Engineering and Automation Anhui UniversityAnhui230601ZhejiangChina Zhejiang Rehabilitation Medical Center Binsheng RoadHangzhou310052ZhejiangChina

Almost all living organisms exhibit autonomic oscillatory activities,which are primarily generated by the rhythmic activities of their neural *** nonlinear oscillator models have been proposed to elucidate these neural behaviors and subsequently applied to the domain of robot ***,the oscillation patterns generated by these models are often unpredictable and need to be obtained through parameter *** study introduces a mathematical model that can be used to analyze multiple neurons connected through fast inhibitory *** characteristic of this oscillator is that its stationary point is stable,but the location of the stationary point changes with the system *** through reasonable topology and threshold parameter selection can the oscillation be *** study analyzed the conditions for stable oscillation in two-neuron networks and three-neuron networks,and obtained the basic rules of the phase relationship of the oscillator network established by this *** addition,this study also introduces synchronization mechanisms into the model to enable it to be synchronized with the sensing ***,this study used these theories to establish a robot single leg joint angle generation *** experimental results showed that the simulated robot could achieve synchronization with human motion,and had better control effects compared to traditional oscillators.

关键词： Oscillator Phase trajectory Synaptic threshold Synchronization Motion generation

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Self-Triggered Impulsive Control for Nonlinear Stochastic Systems

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 264-266页

作者： Tao Zhan Yi Ji Yabin Gao Hongyi Li Yuanqing Xia the School of Mathematics and Statistics Southwest University the School of Astronautics Harbin Institute of Technology IEEE the College of Electronic and Information Engineering Southwest University Zhongyuan University of Technology the School of Automation Beijing Institute of Technology

Dear Editor,This letter deals with the stabilization problem of nonlinear stochastic systems via self-triggered impulsive control(STIC), where the timing of impulsive control actions is not dependent on continuous state monitoring. In contrast to the existing self-triggered control method, novel self-triggered mechanism(STM) is proposed by incorporating a waiting time for stabilizing impulses. This allows for direct prediction of the next impulsive instant.

关键词： Stabilization

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Iron recovery and dephosphorization behaviors from high-phosphorus oolitic hematite by gas-based direct reduction and magnetic separation

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Journal of Iron and Steel Research International 2025年第3期32卷 550-563页

作者： Fang Liu Yi-chi Zhang Wang Zeng Jun Ni Yun-peng Si Heng Zhou Tian-xiang Zhang Sheng-li Wu Ming-yin Kou State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China

With the depletion of high-quality iron ore resources,high-phosphorus oolitic hematite(HPOH)has attracted great attention due to its large reserve and relatively high iron ***,HPOH is very difficult to be used in ironmaking process due to its special structure.A two-step method of gas-based direct reduction and magnetic separation was thus proposed to recover iron and reduce *** results showed that the powdery reduced iron produced contained 92.31%iron and 0.1%phosphorus,and the iron recovery was 92.65%under optimum reduction condition,which is suitable for following *** apatite will be reduced under long reduction time and a large reducing gas flow rate,resulting in more phosphorus found in the metallic *** the hydrogen–carbon ratio will inhibit the formation and growth of iron particles and prevent the breakage of oolitic *** adjustment of reduction temperature is recommended as it affects the oolitic structure and reduction.

关键词： High-phosphorus oolitic hematite Iron recovery Dephosphorization Gas-based direct reduction Magnetic separation

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Practical Tracking Method based on Best Buddies Similarity

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Cyborg and Bionic Systems 2023年第1期4卷 136-148页

作者： Haiyu He Zhen Chen Haikuo Liu Xiangdong Liu Youguang Guo Jian Li School of Automation Beijing Institute of TechnologyBeijingChina School of Mechatronical Engineering Beijing Institute of TechnologyBeijingChina School of Electrical and Data Engineering University of Technology SydneySydneyAustralia

Visual tracking is a crucial skill for bionic robots to perceive the environment and control their ***,visual tracking is challenging when the target undergoes nonrigid deformation because of the perspective change from the camera mounted on the *** this paper,a real-time and scale-adaptive visual tracking method based on best buddies similarity(BBS)is presented,which is a state-of-the-art template matching method that can handle nonrigid *** proposed method improves the original BBS in 4 aspects:(a)The caching scheme is optimized to reduce the computational overhead,(b)the effect of cluttered backgrounds on BBS is theoretically analyzed and a patch-based texture is introduced to enhance the robustness and accuracy,(c)the batch gradient descent algorithm is used to further speed up the method,and(d)a resample strategy is applied to enable the BBS to track the target in scale *** proposed method on challenging real-world datasets is evaluated and its promising performance is demonstrated.

关键词： handle template mounted

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Piezoelectric Field Effect Transistors(Piezo-FETs)for Bionic MEMS Sensors:A Literature Review

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Journal of Bionic engineering 2024年第6期21卷 2717-2729页

作者： Chang Ge Huawei Chen The Department of Electrical and Computer Engineering The University of British ColumbiaVancouverBCV6T 1Z4Canada School of Mechanical Engineering and Automation Beihang UniversityBeijing100191China

This paper presents a literature review exploring the potential of piezoelectric field-effect transistors(piezo-FETs)as bionic microelectromechanical systems(MEMS).First,piezo-FETs are introduced as bionic counterparts to natural mechanoreceptors,highlighting their classic configuration and working ***,this paper summarizes the existing research on piezo-FETs as sensors for pressure,inertial,and acoustic *** selections,design characteristics,and key performance metrics are reviewed to demonstrate the advantage of piezo-FETs over traditional piezoelectric *** identifying the limitations in these existing studies,this paper proposes using bionic piezoelectric coupling structures in piezo-FETs to further enhance the sensing capabilities of these artificial *** validated manufacturing methods for the newly proposed piezo-FET structures are also reviewed,pointing out a novel,feasible,and impactful research direction on these bionic piezoelectric MEMS sensors.

关键词： Bionic MEMS Piezoelectric field-effect transistors Tactile sensor Multi-axis accelerometer Directional microphone

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Aquatic unmanned aerial vehicles(AquaUAV):Bionic prototypes,key technologies,analysis methods,and potential solutions

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Science China(Technological Sciences) 2023年第8期66卷 2308-2331页

作者： WANG XinYang YANG XingBang ZHAO JiaWei PEI Xuan SU HaoHong WANG TianMiao HOU TaoGang School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100083China School of Biological Science and Medical Engineering Beijing Advanced Innovation Centre for Biomedical EngineeringKey Laboratory for Biomechanics and Mechanobiology of Ministry of EducationBeihang UniversityBeijing 100083China

Some research on aircraft is largely inspired by *** them,aerial-aquatic amphibians with trans-media locomotion capabilities have greatly promoted the development of aquatic unmanned aerial vehicles(Aqua UAV).In this article,the studies of Aqua UAV are sorted out by their biological counterpart and summarized in chronological order from 2005 to *** further understand the key technologies of Aqua UAV,we focus on the structural compatibility design of wing and aerial-aquatic propulsion methods by analyzing their advantages and *** addition,the analysis methods of kinematics and dynamics performance of Aqua UAV for simulation and experiment are involved in the process of studying the kinematics,lift/drag,and propulsion of ***,we present several challenges and propose some potential solutions to improve the ability of Aqua UAV in the future.

关键词： aquatic unmanned aerial vehicle(AquaUAV) variable wing design propulsion system computer simulation

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Security control for air-sea heterogeneous multiagent systems with cooperative-antagonistic interactions:An intermittent privacy preservation mechanism

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Science China(Technological Sciences) 2025年第4期68卷 179-192页

作者： Shoufeng YANG Hongjing LIANG Yingnan PAN Tieshan LI College of Control Science and Engineering Bohai UniversityJinzhou121013China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu611731China Laboratory of Electromagnetic Space Cognition and Intelligent Control Beijing100089China

antagonistic interactions,data security and transient-steady state performance of the system are two key *** ensure data security,an intermittent privacy preservation(IPP)mechanism is proposed for the first time.A novel setting time initial mask function and a novel intermittent mask function are *** can implement intermittent preservation for the system according to actual requirements,which solves the irreversibility problem after conventional mask disappears and balances control accuracy and system *** ensure transient-steady state performance,a novel error transformation function(ETF)is proposed and integrated into the predefined-time prescribed performance control *** to conventional hyperbolic tangent type ETFs,the proposed ETF can improve the convergence accuracy of errors under the same ***,a unified model of the air-sea HMASs is established,which improves the model accuracy compared with the simplified ***,the proposed IPP security control strategy is applied to the air-sea delivery mission to verify its feasibility and effectiveness.

关键词： air-sea heterogeneous multiagent systems(HMASs) security control intermittent privacy preservation(IPP) error transformation function(ETF)

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Brain-Conditional Multimodal Synthesis: A Survey and Taxonomy

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2025年第5期6卷 1080-1099页

作者： Mai, Weijian Zhang, Jian Fang, Pengfei Zhang, Zhijun South China University of Technology School of Automation Science and Engineering Guangzhou510640 China Southeast University School of Computer Science and Engineering Nanjing210096 China South China University of Technology Key Library of Autonomous Systems and Network Control Ministry of Education The School of Automation Science and Engineering Guangzhou510640 China Institute for Super Robotics Huangpu Guangzhou510555 China Nanchang University Jiangxi Thousand Talents Plan Nanchang330031 China Jishou University College of Computer Science and Engineering Jishou416000 China Guangdong Artificial Intelligence and Digital Economy Laboratory Pazhou Lab Guangzhou510335 China Shaanxi University of Technology Shaanxi Provincial Key Laboratory of Industrial Automation School of Mechanical Engineering Hanzhong723001 China Changsha Normal University School of Information Science and Engineering Changsha410100 China Guangdong University of Petrochemical Technology School of Automation Science and Engineering Institute of Artificial Intelligence and Automation Maoming525000 China

In the era of artificial intelligence generated content (AIGC), conditional multimodal synthesis technologies (e.g., text-to-image) are dynamically reshaping the natural content. Brain signals, serving as potential reflections of how the brain interprets external information, exhibit a distinctive one-to-many correspondence with various external modalities. This correspondence makes brain signals emerge as a promising guiding condition for multimodal synthesis (e.g., image, text, and audio), which is crucial for developing practical brain–computer interface systems and unraveling complex mechanisms underlying human perception. This survey comprehensively examines the emerging field of brain-conditional multimodal synthesis, termed AIGC-brain, to delineate the current landscape and future directions. To begin, related neuroimaging datasets and generative models are introduced as the foundation of AIGC-brain decoding and analysis. Next, we present a comprehensive taxonomy according to AIGC-brain methodologies, followed by task-specific representative work and implementation details to facilitate in-depth comparison and analysis. Quality assessments are then introduced for both qualitative and quantitative evaluation. Finally, this survey explores insights gained, outlining current challenges and prospects of AIGC-brain. As a pioneering survey, this article paves the way for future advances in AIGC-brain research. © 2020 IEEE.

关键词： Taxonomies

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