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arXiv 2025年

作者： Lin, Tao Wang, Qingwang Liang, Qiwei Tang, Minghua Sun, Yuxuan Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming China College of Mechatronics and Control Engineering Shenzhen University Shenzhen China

Shadow removal is challenging due to the complex interaction of geometry, lighting, and environmental factors. Existing unsupervised methods often overlook shadow-specific priors, leading to incomplete shadow recovery. To address this issue, we propose a novel unsupervised Frequency Aware Shadow Removal Network (FASR-Net), which leverages the inherent frequency characteristics of shadow regions. Specifically, the proposed Wavelet Attention Downsampling Module (WADM) integrates wavelet-based image decomposition and deformable attention, effectively breaking down the image into frequency components to enhance shadow details within specific frequency bands. We also introduce several new loss functions for precise shadow-free image reproduction: a frequency loss to capture image component details, a brightness-chromaticity loss that references the chromaticity of shadow-free regions, and an alignment loss to ensure smooth transitions between shadowed and shadow-free regions. Experimental results on the AISTD and SRD datasets demonstrate that our method achieves superior shadow removal performance. Copyright © 2025, The Authors. All rights reserved.

关键词： Wavelet decomposition

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The dynamic characteristics of a valve-less micropump

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Chinese Physics B 2012年第7期21卷 359-367页

作者：蒋丹李松晶 School of Mechatronics Engineering University of Electronic Science and Technology of China Department of Fluid Control and Automation Harbin Institute of Technology

The aim of this paper is to investigate the dynamic characteristics of a valve-less micropump. A dynamic mathe- matical model of the micropump based on a hydraulic analogue system and a simulation method using AMESim software are developed. By using the finite-element analysis method, the static analysis of the diaphragm is carried out to ob- tain the maximum deflection and volumetric displacement. Dynamic characteristics of the valve-less micropump under different excitation voltages and frequencies are simulated and tested. Because of the discrepancy between simulation results and experimental data at frequencies other than the natural frequency, the revised model for the diaphragm maximum volumetric displacement is presented. Comparison between the simulation results based on the revised model and experimental data shows that the dynamic mathematical model based on the hydraulic analogue system is capable of predicting dynamic characteristics of the valve-less micropump at any excitation voltage and frequency.

关键词： valve-less micropump dynamic characteristics hydraulic analogue model diffuser

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A Recursive System Identification With Non-Uniform Temporal Feedback Under Coprime Collaborative Sensing

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ASME Letters in Dynamic Systems and control 2023年第2期3卷 021010页

作者： Ouyang, Jinhua Chen, Xu Mechatronics Automation and Control Systems Laboratory Department of Mechanical Engineering University of Washington SeattleWA98195 United States Mechatronics Automation and Control Systems Laboratory Department of Mechanical Engineering University of Washington SeattleWA98195 United States

We present a system identification method based on recursive least-squares (RLS) and coprime collaborative sensing, which can recover system dynamics from non-uniform temporal data. Focusing on systems with fast input sampling and slow output sampling, we use a polynomial transformation to reparameterize the system model and create an auxiliary model that can be identified from the non-uniform data. We show the identifiability of the auxiliary model using a Diophantine equation approach. Numerical examples demonstrate successful system reconstruction and the ability to capture fast system response with limited temporal feedback. Copyright © 2023 by ASME.

关键词： Feedback

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Probabilistic Teleportation of an Arbitrary Two-Qubit State via Positive Operator-Valued Measurement with Multi Parties

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Communications in Theoretical Physics 2017年第4期67卷 377-382页

作者：石磊魏家华李云霞马丽华薛阳罗均文 Information and Navigation College Air Force Engineering University Department of Automatic Control College of Mechatronics and AutomationNational University of Defense Technology

We propose a novel scheme to probabilistically transmit an arbitrary unknown two-qubit quantum state via Positive Operator-Valued Measurement with the help of two partially entangled states. In this scheme, the teleportation with two senders and two receives can be realized when the information of non-maximally entangled states is only available for the senders. Furthermore, the concrete implementation processes of this proposal are presented, meanwhile the classical communication cost and the successful probability of our scheme are calculated.

关键词： probabilistic teleportation positive operator-valued measurement successful probability classical communication cost

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The Gateway Anomaly Detection And Diagnosis In WSNs 28

The Gateway Anomaly Detection And Diagnosis In WSNs

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第28届中国控制与决策会议

作者： Feng Zhen Fu JingQi Su Wei School of Mechatronic Engineering and Automation Shanghai University College of Mechatronics and Control Engineering Hubei Normal University

ISBN: (纸本)9781467397155

The gateway plays the essential role in wireless sensor networks,which is critical component in terms of sending and receiving *** abnormal of gateway will have a great influence on data transmission and reduce the stability and reliability of *** research described in the paper origins from equipment monitoring system based on the wireless sensor network system,which is deployed at Cold Rolling and Continuous Annealing line(CRCAL) in steel *** communication data of gateway state were analyzed with statistic method in cluster using the diagnosis *** with the theory of multivariate statistical process control(MSPC),we propose a method of gateway anomaly detection based on Principal Component Analysis(PCA).Finally,the method is proved to be reliable and effective based on the actual data from field monitoring network system.

关键词： Wireless sensor networks(WSN) Gateway Anomaly detection Anomaly diagnosis Principal Component Analysis(PCA)

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Terminal Configuration Principles for Achieving Various Electromagnetic Integration Units with Flexible Multilayer Foil Technique

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IEEE Electromagnetic Compatibility Magazine 2023年第2期12卷 47-61页

作者： Jiang, Shiqi Wang, Panbao Wang, Wei Liu, Yitao Xu, Dianguo School of Electrical Engineering and Automation Harbin Institute of Technology Harbin150001 China Shenzhen University College of Mechatronics and Control Engineering Shenzhen518060 China

Owing to the greater integration capability, flexible multilayer foil (FMLF) technique has a great potential to promote the evolution of passive integration techniques. To understand the mechanism of this technique is essential for its applications and popularization. To this end, this paper reveals the fundamentals and terminal configuration principles to realize various functional electromagnetic integration units with FMLF technique. A regular FMLF winding is taken as the research object, from theoretical analyses on the associated distributed electromagnetic component (DEMC) circuits, the lumped electromagnetic component (LEMC) circuits with different terminal configuration modes are derived. Moreover, A FMLF winding prototype is built for experimental verifications. The LEMC circuits are demonstrated through the comparative analyses between practically measured and LTspice based simulated impedances or port characteristics. © 2021 IEEE.

关键词： Timing circuits

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Lower bound of tracking performance with finite control energy and channel energy constraint

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控制理论与应用（英文版） 2013年第3期11卷 409-414页

作者： Baoxian WANG Zhihong GUAN Fushun YUAN Xisheng ZHAN College of Automation Huazhong University of Science and Technology School of Mathematics and Statistics Anyang Normal University College of Mechatronics and Control Engineering Hubei Normal University

This paper studies the tracking performance of the single-input single-output （SISO）, finite dimensional, linear and time-invariant （LTI） system over an additive white Gaussian noise （AWGN） channel with finite control energy and channel input energy constraint. A new performance index is proposed which is minimized over all stabilizing two-degree-of-freedom controllers. The explicit expressions of the lower bound of the tracking performance and the minimum of signal-to-noise required are obtained. The results show that the lower bound is correlated to the unstable pole, nonminimum phase zero and the channel scaling factor. Finally, one example is given to validate the conclusions by adopting the special inner-outer factorization.

关键词： Optimal performance control energy Channel energy constraint Gaussian noise

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Investigating the dynamic memory effect of human drivers via ON-LSTM

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Science China(Information Sciences) 2020年第9期63卷 83-93页

作者： Shengzhe DAI Zhiheng LI Li LI Dongpu CAO Xingyuan DAI Yilun LIN Department of Automation Tsinghua University Shenzhen International Graduate School Tsinghua University Department of Mechanical and Mechatronics Engineering University of Waterloo State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

It is a widely accepted view that considering the memory effects of historical information(driving operations) is beneficial for vehicle trajectory prediction models to improve prediction accuracy. However,many commonly used models(e.g., long short-term memory, LSTM) can only implicitly simulate memory effects, but lack effective mechanisms to capture memory effects from sequence data and estimate their effective time range(ETR). This shortage makes it hard to dynamically configure the most suitable length of used historical information according to the current driving behavior, which harms the good understanding of vehicle motion. To address this problem, we propose a modified trajectory prediction model based on ordered neuron LSTM(ON-LSTM). We demonstrate the feasibility of ETR estimation based on ON-LSTM and propose an ETR estimation method. We estimate the ETR of driving fluctuations and lane change operations on the NGSIM I-80 dataset. The experiment results prove that the proposed method can well capture the memory effects during trajectory prediction. Moreover, the estimated ETR values are in agreement with our intuitions.

关键词： driving behavior memory effect trajectory prediction historical information ON-LSTM

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control channel identification method and experimental research on FXLMS vibration control

Control channel identification method and experimental resea...

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2009 International Conference on Computational Intelligence and Software engineering, CiSE 2009

作者： Gao, Zhiyuan Qin, Tinggao Huang, Quanzhen Zhu, Xiaojin School of Mechatronics Engineering and Automation Shanghai University Shanghai China Measuring and Control Engineering Group Department of Automation Engineering Shanghai University Shanghai China

ISBN: (纸本)9781424445073

control channel model parameters of adaptive filter feedforward control for piezoelectric smart flexible structures should be predicted, as not only they are the key factors of system stability and control effect but also they have immediate impacts on system convergence and the validity of control strategy. This paper takes the piezoelectric flexible structure as research object. According to least mean square (LMS) algorithm, control channel identification method and its implementation, applied in the MIMO adaptive filter feedforward vibration control, is deduced in detail. Parameter identification, based on which adaptive control for vibration suppression is developed, is performed for the controlled structure, a smart cantilever plate with piezoelectric patches. Experiment results demonstrate the correctness and availability of the control channel identification method and its implementation technique. ©2009 IEEE.

关键词： Adaptive filters

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On bistability in genetic double-negative feedback loop with positive autoregulations 33

On bistability in genetic double-negative feedback loop with...

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第三十三届中国控制会议

作者： LING Guang HE Ding-Xin GUAN Zhi-Hong ZHANG Xian-He ZHAN Xi-Sheng College of Automation Huazhong University of Science and Technology College of Mechatronics and Control Engineering Hubei Normal University

ISBN: (纸本)9781479947249

This paper focuses on bistability in a class of simplified double-negative feedback loop with positive autoregulations(DNFLPAs). The existence criteria of multiple equilibriums is established and the stability conditions are derived for each equilibrium. The effect of each biochemical parameters on bistability is explained. At last, several numerical simulations are carried out to deepen our analysis.

关键词： Multistability,Double-negative feedback loop,Positive autoregulation,Genetic Regulatory Networks.

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