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Recent progress on stability and applications of flexible perovskite photodetectors

Journal of Semiconductors 2025年第1期46卷 5-19页

作者： Ying Hu Qianpeng Zhang Junchao Han Xinxin Lian Hualiang Lv Yu Pei Siqing Shen Yongli Liang Hao Hu Meng Chen Xiaoliang Mo Junhao Chu State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionDepartment of Materials ScienceInstitute of OptoelectronicsFudan UniversityShanghai 200433China Advanced Silicon Technology Co. Ltd.Shanghai 201616China

Flexible photodetectors have garnered significant attention by virtue of their potential applications in environmental monitoring,wearable healthcare,imaging sensing,and portable optical *** stand out as particularly promising materials for photodetectors,offering exceptional optoelectronic properties,tunable band gaps,low-temperature solution processing,and notable mechanical *** this review,we explore the latest progress in flexible perovskite photodetectors,emphasizing the strategies developed for photoactive materials and device structures to enhance optoelectronic performance and ***,we discuss typical applications of these devices and offer insights into future directions and potential applications.

关键词： perovskite flexible photodetector stability versatile applications

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A novel H∞ memory observer design for uncertain switched nonlinear systems using past output measurements

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International Journal of Robust and Nonlinear Control 2023年第12期33卷 7310-7332页

作者： Xiao, Zhongzhang Zheng, Qunxian Wang, Jie School of Electrical Engineering Anhui Polytechnic University Wuhu China Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment of Ministry of Education Anhui Polytechnic University Wuhu China

This paper tackles the problem of robust (Figure presented.) memory observer design problem for discrete-time switched nonlinear systems by using past output measurements. Different from traditional design strategies of Luenberger-type observers using the current output measurements, the memory Luenberger-type observer design strategy introduces the past output measurements of switched systems and observers simultaneously. In addition, in order to better describe the observer error systems, a novel augmented state variable framework of the observer error systems is developed. The highlight of this paper lies that the memory observer design strategy is developed by considering past output measurements and state error values of memory observers, whose performance can be improved by increasing the number of past output measurements used in the observer design, which is an important discovery and significant novelty of this work. By combining the multiple Lyapunov functions approach and average dwell time technique, and introducing matrix variables with free structure, new sufficient conditions for weighted (Figure presented.) performance analysis of observer error systems are derived. Then, the memory observer synthesis conditions are obtained in the form of linear matrix inequality (LMI), and the memory observers can be obtained by solving these LMIs. Lastly, two examples are presented to show the advantages and effectiveness of the derived results. © 2023 John Wiley & Sons Ltd.

关键词： Linear matrix inequalities

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Cubature Kalman Fusion Filtering Under Amplify-and-Forward Relays With Randomly Varying Channel Parameters

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 356-368页

作者： Jiaxing Li Zidong Wang Jun Hu Hongli Dong Hongjian Liu the Department of Applied Mathematics Harbin University of Science and Technology IEEE the Department of Computer Science Brunel University London the School of Automation Harbin University of Science and Technology the Artificial Intelligence Energy Research Institute Northeast Petroleum University the Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Northeast Petroleum University the National Key Laboratory of Continental Shale Oil of China Northeast Petroleum University the Key Laboratory of Advanced Perception and Intelligent Control of High-End Equipment Ministry of Education Anhui Polytechnic University the School of Mathematics and Physics Anhui Polytechnic University

In this paper, the problem of cubature Kalman fusion filtering(CKFF) is addressed for multi-sensor systems under amplify-and-forward(AaF) relays. For the purpose of facilitating data transmission, AaF relays are utilized to regulate signal communication between sensors and filters. Here, the randomly varying channel parameters are represented by a set of stochastic variables whose occurring probabilities are permitted to exhibit bounded uncertainty. Employing the spherical-radial cubature principle, a local filter under AaF relays is initially constructed. This construction ensures and minimizes an upper bound of the filtering error covariance by designing an appropriate filter gain. Subsequently, the local filters are fused through the application of the covariance intersection fusion rule. Furthermore, the uniform boundedness of the filtering error covariance's upper bound is investigated through establishing certain sufficient conditions. The effectiveness of the proposed CKFF scheme is ultimately validated via a simulation experiment concentrating on a three-phase induction machine.

关键词： Amplify-and-forward (AaF) relays covariance intersection fusion cubature Kalman filtering multi-sensor systems uniform boundedness

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Adaptive Neural Network Dynamic Surface Tracking Control of a VTOL Aircraft

Adaptive Neural Network Dynamic Surface Tracking Control of ...

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2023 China Automation Congress, CAC 2023

作者： Deng, Xiongfeng Yang, Xianhao Tao, Liang Xu, Binzi Zhang, Fan Zhang, Chen Anhui Polytechnic University Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Ministry of Education Wuhu China

ISBN: (纸本)9798350303759

The problem of asymptotic tracking control for a vertical take-off and landing (VTOL) aircraft system is addressed in this paper, in which unknown external disturbances and nonlinear dynamics are added. Unknown nonlinear dynamics are deal with by using neural networks, and some adaptive laws are addressed. Additionally, some control laws for unknown parameters are developed to address unknown nonlinearities resulting from the analysis process. Based on the dynamic surface control approach and neural network control, the adaptive control laws with dynamic surface method and neural network are developed for the system. The results show that the developed control laws insure that the system under consideration asymptotically follows the given desired signal, and the system's tracking errors can converge to zero. At last, a simulation case is shown to validate the effectiveness of developed control strategies. © 2023 IEEE.

关键词： VTOL/STOL aircraft

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Position and Attitude Finite-Time Tracking Control of a VTOL Aircraft Using Adaptive Global Fast Terminal Sliding Mode Control 16

Position and Attitude Finite-Time Tracking Control of a VTOL...

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16th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2023

作者： Deng, Xiongfeng Huang, Yiqing Xu, Binzi Tao, Liang Ministry of Education Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Anhui Polytechnic University Wuhu China

ISBN: (纸本)9798350327144

This work discusses the finite-time tracking control design for a vertical take-off and landing (VTOL) aircraft under external disturbances. Considering the existence of unknown nonlinear dynamics of VTOL aircraft, the neural network is applied to tackle each unknown term. In order to cope with the approximation errors and the aircraft system's unknown disturbances, some parameter update laws are proposed during the analysis process. After that, by utilizing the neural network-based control technique and designed global fast terminal sliding mode control (FTSMC) functions, the adaptive global FTSMC laws are final presented, which can make certain that the outputs of aircraft system tracking the given trajectories, and also make certain that the tracking errors tend to zero within a finite time. At last, the validity of designed control laws is verified through a given numerical example. © 2023 IEEE.

关键词： VTOL/STOL aircraft

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Adaptive Control of PMSM Based on Nonlinear Disturbance Observe 5

Adaptive Control of PMSM Based on Nonlinear Disturbance Obse...

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5th International Conference on Robotics, intelligent Control and Artificial Intelligence, RICAI 2023

作者： Li, Tongtong Tao, Liang Deng, Xiongfeng Xu, Binzi Ministry of Education Anhui Polytechnic University Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Wuhu China

ISBN: (纸本)9798350357950

In this paper, an adaptive backstepping controller is investigated to obtain high tracking performance for permanent magnet synchronous motor (PMSM) with external load torque changing and system parameter uncertainties. A nonlinear disturbance observer (NDOB) is proposed to observe and compensate the lumped disturbance and uncertainties in real time. Then, an adaptive upper limitation is designed to estimate the bound of NDOB and the lumped disturbance to reduce the system control gain. Besides, an adaptive estimation law is designed for online identification of parameter R, which is prone to parameter perturbation. The simulation results confirm the effectiveness of the designed control method. © 2023 IEEE.

关键词： adaptive backstepping control adaptive upper bound estimation NDOB parameter estimations PMSM

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Combine deep learning and Bayesian analysis to separate overlapping gravitational wave signals

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Science China(Physics,Mechanics & Astronomy) 2025年第5期68卷 205-219页

作者： Cunliang Ma Weiguang Zhou Zhoujian Cao Mingzhen Jia Jiangxi Provincial Key Laboratory of Multidimensional Intelligent Perception and Control Jiangxi University of Science and TechnologyGanzhou 341000China Institute of Applied Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

Future gravitational wave(GW)observatories,such as the Einstein Telescope,are anticipated to encounter overlapping GW signals,presenting considerable obstacles to GW data processing techniques,including signal identification and parameter *** this letter,we propose a scheme of combining deep learning and Bayesian analysis to disentangle overlapping GW *** deep learning part takes a data-driven approach that employs an encoder-separation-decoder framework which is powerful enough to extract the shape of the signal even when the GW signals completely *** Bayesian analysis part takes the matched filtering technique to extract the amplitude of the GW *** scheme can facilitate the utilization of existing GW detection and parameter estimation methods for future instances of overlapping *** methodology effectively reduces biases in parameter estimation when handling multiple intertwined ***,this marks the first known instance where deep learning has been successfully utilized to disentangle overlapping GW signals.

关键词： gravitational wave separation machine learning Einstein Telescope parameter estimation

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Differentially Private Opinion Dynamics of Influence Networks

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IEEE Transactions on Control of Network Systems 2025年第2期12卷 1662-1673页

作者： Wu, Guanglei Zhang, Wenbing Mao, Shuai Wu, Xiaotai Tang, Yang Yangzhou University School of Mathematical Sciences Jiangsu225002 China Nantong University Department of Electrical Engineering Nantong226019 China Anhui Polytechnic University Key Laboratory of Advanced Perception and Intelligent Control of High-end Equipment Ministry of Education Wuhu241000 China East China University of Science and Technology Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education Shanghai200237 China

In this paper, a unified influence networks model incorporating differential privacy mechanisms (DPMs), called the differentially private opinion dynamics (DPODs) model is proposed. In this model, each individual uses protected opinions rather than the private opinions of his/her neighbors to update his/her private opinions, where the protected opinion of an individual is a blend of private opinions and random noise following Laplace distribution. Building on stochastic analysis techniques and matrix theory, we show that the influence network under consideration converges under specific conditions governing individual sensitivities and interaction weights. In addition, the statistical properties related to convergence accuracy are established by utilizing the Markov inequality to estimate a lower bound on the probability of all individuals' final opinions converging to a neighborhood formed by their initial opinions' convex hull. We further conduct a differential privacy analysis to validate the efficacy of the proposed DPMs in safeguarding the private opinions of all individuals. Finally, two examples including one of the Karate-Club networks are provided to shed new light on the effectiveness of the theoretical results. © 2014 IEEE.

关键词： Differential privacy

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Energy routing strategy based on minimum loss and transaction price 41

Energy routing strategy based on minimum loss and transactio...

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第41届中国控制会议

作者： Yuanhui Wang Yan Zhang The Key Laboratory of Advanced Perception and Intelligent Control of High-End Equipment Ministry of EducationAnhui Polytechnic University

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

For the energy transmission problem in the energy Internet,this paper establishes a multi-layer supply and demand topology of the energy router based on the multi-layer nodes of the adjacent points of the demand routing *** comprehensively considering the transaction price of energy and the loss in the transmission process,an energy routing algorithm based on the transaction price and loss is proposed to determine the optimal transaction energy routing pair and the energy routing strategy of the non-congested optimal ***;taking a 9-MG system(9-nodes energy network) as an example,the energy transmission strategies with congestion and without congestion are given to verify the effectiveness and merit of the method proposed in this paper.

关键词： Energy Internet adjacent energy router(ER) transaction price transmission loss energy routing algorithm

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Bulk photovoltaic effect in two-dimensional ferroelectric α-In2Se3

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Science China(Information Sciences) 2025年第2期68卷 285-292页

作者： Huiting WANG Shuaiqin WU Yan CHEN Qianru ZHAO Jinhua ZENG Ruotong YIN Yuqing ZHENG Chang LIU Shukui ZHANG Tie LIN Hong SHEN Xiangjian MENG Jun GE Xudong WANG Junhao CHU Jianlu WANG State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of OptoelectronicsFudan University Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Frontier Institute of Chip and System Fudan University

Non-centrosymmetric material systems can generate spontaneous photocurrent without a p-n junction under uniform illumination, which is known as the bulk photovoltaic effect（BPVE）. It has garnered significant attention for its application potential in the fields of energy harvesting and photoelectric detection. In this study, we report the BPVE observed in twodimensional ferroelectric α-In2Se3multilayer flakes. The reversal in spontaneous photocurrent polarity is observed and associated with the out-of-plane ferroelectric polarization direction. The spontaneous photocurrent originating from the shift current is also polarization-sensitive. The amplitude of spontaneous photocurrent is further increased by one order of magnitude through vacuum annealing. Our results provide a further application potential for new-generation photodetectors based on BPVE with low power consumption and multi-dimensional optoelectronic detection.

关键词： bulk photovoltaic effect 2D ferroelectrics 3R $\alpha$-In$_2$Se$_3$ shift current self-powered photodetection

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