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Fault estimation based on high order iterative learning scheme for systems subject to nonlinear uncertainties

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Science China(Information Sciences) 2022年第7期65卷 261-262页

作者： Li FENG Shuiqing XU Ke ZHANG Yi CHAI darong huang College of Traffic and Transportation Chongqing Jiaotong University College of Electrical Engineering and Automation Hefei University of Technology College of Automation Chongqing University

Dear editor, Due to the high load and continuous work, some equipment such as sensors and actuators in the system will inevitably degrade as the aging time increases. Also, they may evolve into faults causing the decline of system control performance. However, the stability of the system cannot be guaranteed due to the large loss of property and casualties caused by faults. Therefore, fault diagnosis and faulttolerant control [1, 2] are widely applied in the industrial system to solve these problems.

关键词： Fault estimation High order iterative learning scheme Nonlinear system Nonlinear uncertainties Iterative learning control

A Novel PoW Scheme Implemented by Probabilistic Signature for Blockchain

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Computer Systems Science & Engineering 2021年第11期39卷 265-274页

作者： Bo Mi Yuan Weng darong huang Yang Liu Yuqing Gan Institute of Information Science and Engineering Chongqing Jiaotong UniversityChongqing400074China Electrical and Electronics Engineering Department The University of SheffieldSheffieldS102TTUnited Kingdom

PoW(Proof of Work)plays a significant role in most blockchain systems to grant an accounting right over decentralized participants and ensure tamper *** hash functions are generally exploited for PoW due to their merits on summering,anti-collision,and irreversibility,they cannot certify that the bookkeeper is exactly the ***,such insistence may lead to abuse or even embezzlement of computing power for the benefit of malicious *** preserve the functionality of PoW but also bind the miners’signing keys with their works,we build a post-quantum PoW scheme by changing the approximate closest vector norm for probabilistic *** from the schemes based on hash functions,our scheme takes signing as the proof of work where signature verification is just the evidence of block *** also presented a method to adjust the difficulty of signing by modifying the probability of generating a correct *** performance of our scheme is also analyzed theoretically and experimentally,which implies its practicability and advantages.

关键词： Proof of work NTRUSign Burr distribution blockchain

Dynamic State Estimation of Power System Based on Grey System Theory and Strong Tracking Filter

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Dynamic State Estimation of Power System Based on Grey Syste...

Design and Analysis of Intelligent Operation and Maintenance Platform System 36

第25届中国控制与决策会议

作者： Jianping Tang darong huang Ling Zhao Institute of Information Science and Engineering Chongqing Jiaotong University

ISBN: (纸本)9781467355339

Currently, the dynamic state estimation of power systems constructing based extended Kalman Filter（EKF） has some shortages such as slow convergence and low robustness etc.. For that, a new dynamic state estimation method was presented based on Grey System Theory（GST） and Strong Tracking Filter（STF）. Firstly, the correlation degree analysis was conducted and GM（1,1） model was established by using the sate historical data of power systems. And then the forecast values of state vector were computed in forecasting model. Secondly, by measuring innovation information of filtering data, we had constructed a filtering model of forecasting values based STF. Finally, some simulation examples showed that the theoretical analysis and algorithm are effectively and practicably.

关键词： power system dynamic state estimation grey system theory strong tracking filter

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Design and Analysis of Intelligent Operation and Maintenance...

State estimation and finite-frequency fault detection for interconnected switched cyber-physical systems

第36届中国控制会议

作者： Peng Chuning Fan Jie Fan Qixin huang darong Zhao Dong State Grid Corporation State Grid Jiangsu Electric Power Company State Grid Jiangsu Electric Power Company Electric Power Research Institute Institute of Information Science and Engineering Chongqing Jiaotong University

ISBN: (纸本)9781538629185

In order to solve the problem that a variety of automated equipment to coordinate the operation of instability,monitoring is not timely,combined with "four lines a library" within the resources to design a system to coordinate the operation of the *** system as the professional and technical supporting platform for intelligent operation and maintenance of "four lines a library",will fully support the daily operation and maintenance operations of equipment and operation and maintenance *** system function module design includes:operation information,work order management,job management,equipment file management,spare parts management,knowledge base,statistical analysis,operation and maintenance quality management,auxiliary management,system management,mobile application 11 primary function modules,46 secondary function modules.

关键词： Intelligent operation and maintenance Operation and maintenance management Running information Work order management Equipment archives management

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Science China(Information Sciences) 2023年第9期 194-212页

作者： Shenghui GUO Mingzhu TANG darong huang Jiafeng SONG School of Electronic and Information Engineering Suzhou University of Science and Technology School of Artificial Intelligence Anhui University Tsinghua University Suzhou Automobile Research Institute

For switched cyber-physical systems with disturbances and actuator faults, we address fault detection and isolation problems. First, the preconditions relative to subsystems are discussed in detail,and the original subsystems are turned into an overall system. Second, the frequency ranges of faults are considered to belong to the finite-frequency domain, and the observer, which makes the residual robust against disturbances and sensitive to faults, is designed by combining the finite-frequency H-technique with the mixed L2-L∞/H∞technique. Third, design conditions, which guarantee that the error system is stable and satisfies the mixed performance, are derived using the average dwell time method and Lyapunov functionals. Finally, a traffic density dynamic model is proposed to demonstrate the validity and effectiveness of the proposed method.

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一种改进的结合边缘检测的去雾新方法

上海交通大学学报 2015年第6期49卷 861-867页

作者：黄大荣方周赵玲重庆交通大学信息科学与工程学院重庆400074

暗原色去雾算法复原的图像会出现边缘效应,为此提出了一种改进的基于暗原色理论的去雾算法.首先计算出图像的暗色图,并使用小波分解算法将暗色图像向下采样一次;然后在小波分解的平滑部分计算大气光和图像的暗原色,提取出平滑部分的边... 详细信息

暗原色去雾算法复原的图像会出现边缘效应,为此提出了一种改进的基于暗原色理论的去雾算法.首先计算出图像的暗色图,并使用小波分解算法将暗色图像向下采样一次;然后在小波分解的平滑部分计算大气光和图像的暗原色,提取出平滑部分的边缘信息,并使用形态学对其进行膨胀获得相应的二值边缘图像;接着对二值边缘图像所在区域的暗原色及非边缘处的暗原色分别进行优化;最后,将优化后的暗原色使用小波重构算法向上采样,并据此计算出图像透射率,结合去雾模型复原到清晰的无雾图像.实验证明,该方法在很好地去除边缘效应的同时,极大地减少了算法时间复杂度,满足实时要求.

关键词：图像去雾算法暗原色优先理论小波边缘提取

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Incipient fault diagnosis on active disturbance rejection control

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Science China. Information Sciences 2022年第9期65卷 199202页

作者： huang, darong Mi, Bo Liu, Yang Zhang, Zhenyuan Hua, Xingxing Chongqing Jiaotong University College of Information Science and Engineering Chongqing China (GRID:grid.440679.8) (ISNI:0000 0000 9601 4335) Chongqing Jiaotong University College of Mathematical and Statistics Chongqing China (GRID:grid.440679.8) (ISNI:0000 0000 9601 4335)

Dear editor,The incipient fault diagnosis method has received great attention in recent decades owing to the increasing demand for reliability and safety in industrial processes [1, 2]. A controller of active disturbance rejection control (ADRC)can effectively separate the incipient fault from the disturbance. Therefore, studying the incipient fault estimation has become a necessarily imminent research topic in this new frontier.

关键词： Active disturbance rejection control Fault diagnosis Disturbance abrupt incipient fault soft incipient fault

Fault Diagnosis for Gearbox Based on EMD and Multifractal

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Fault Diagnosis for Gearbox Based on EMD and Multifractal

第26届中国控制与决策会议

作者： Zhao Ling Chu Xiaoyan huang darong College of Information Science and Engineering Chongqing Jiaotong University Chongqing University

The application of the multifractal theory in gearbox fault diagnosis has been studied in the paper, and the fractal characteristics of gearbox vibration signals is shown. Based on using EMD, the improved algorithm of multifractal spectrum is put forward, and is applying to extract the fault feature. At last, the fault diagnosis application in gear box takes as the example to prove the feasibility of the method.

关键词： multifractal EMD fault diagnosis

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机动目标ISAR自聚焦新方法

西安电子科技大学学报 2014年第3期41卷 71-78页

作者：黄大荣张磊邢孟道保铮西安电子科技大学雷达信号处理国家重点实验室陕西西安710071

针对机动目标提出一种新的自聚焦方法.该方法在平动相位误差估计过程中考虑对方位调频相位的优化估计;通过对多样本信号的相干积累,有效提高低信噪比下的估计性能;结合迭代处理可进一步提高相位误差估计的精度.仿真和实测数据处理结果表... 详细信息

针对机动目标提出一种新的自聚焦方法.该方法在平动相位误差估计过程中考虑对方位调频相位的优化估计;通过对多样本信号的相干积累,有效提高低信噪比下的估计性能;结合迭代处理可进一步提高相位误差估计的精度.仿真和实测数据处理结果表明,提出的方法具有比传统方法更好的自聚焦效果和对噪声的容忍性.

关键词：机动目标二次相位补偿初始相位补偿自聚焦

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