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2018 IEEE International Conference of Safety Produce Informatization, IICSPI 2018

作者： Lu, Xinghua Institute of Computer Control Technology Huali College Guangdong University of Technology Guangzhou Zengcheng China

ISBN: (纸本)9781538655139

In the UAV flight, due to the influence of attitude jitter and sensor gyro error, the flight stability is not good. In order to improve the flight stability of the UAV, a new control method of flight is proposed based on micro inertial attitude adjustment, gyroscope, and other sensitive elements are used for information acquisition of attitude data of unmanned aerial vehicle (UAV). Error compensation and filtering is taken based on sensor data of micro AHRS reading, the deflection correction and control of attitude angle are carried out by using high-precision sensor gyroscope, Euler angle method is used to calculate attitude angle, and the collected original data of acceleration and magnetometer is processed by Kalman filtering, multi sensor information fusion method is used for UAV micro inertial attitude adjustment. According to the updated information fusion parameter output, Kalman equation update is taken and flight stability control of unmanned aerial vehicle is obtained. The simulation results show that, the control method has good stability in flight attitude adjustment of UAV, which can realize accurate attitude positioning of UAV, and improve the accuracy and reliability of flight attitude positioning control. © 2018 IEEE.

关键词： Error compensation

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Flight stability control of unmanned aerial vehicle based on micro inertia attitude adjustment

Flight stability control of unmanned aerial vehicle based on...

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2017 International Conference on computer technology, Electronics and Communication, ICCTEC 2017

作者： Lu, Xinghua Institute of Computer Control Technology Huali College Guangdong University of Technology Guangzhou Zengcheng China

ISBN: (纸本)9781538657843

关键词： Error compensation

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Failure detection and recovery in the batch process automation domain using automation agents

Failure detection and recovery in the batch process automati...

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2010 2nd International Conference on Advances in Computing, control and Telecommunication Technologies, ACT 2010

作者： Merdan, Munir Lepuschitz, Wilfried Šahović, Bakir Vallée, Mathieu Automation and Control Institute Vienna University of Technology Vienna Austria Institute of Computer Technology Vienna University of Technology Vienna Austria

ISBN: (纸本)9780769542690

The process industry needs to cope with permanently changing environments where sudden component failures can significantly influence the system performance if not treated in an appropriate amount of time. Agent-based manufacturing control systems are recognized as a promising technology that can handle such anomalies. However, current agent approaches are lacking real-time capabilities and solutions that support distribution and agility. We address this issue by introducing an automation agent architecture that consists of the low level control layer, which is based on IEC 61499 and responsible for directly controlling the physical component, as well as of the high level control layer which includes a world model repository and is responsible for organizational and supervisory functions. The world model serves as an accurate internal representation of the agent's external environment and is used to detect anomalies in the environment. In this paper we present the monitoring and diagnostics abilities of the introduced automation agent architecture within the batch process domain. © 2010 IEEE.

关键词： Level control

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Synthesis of churros-like V2Se9 nanostructures for ultrasensitive electrochemical detection of oxalic acid in urine with portable point-of-care diagnostic devices

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Biosensors and Bioelectronics 2025年 285卷 117589页

作者： Shi, Peizheng Ye, Chen Sun, Zhuang Sun, Kaiqiang Zhao, Ningbin Pourfakhr, Mahan Cai, Tao Nishimura, Kazuhito Jiang, Nan Tsai, Hsu-Sheng Wu, Lidong Wu, Wenqi Yu, Jiancheng Fu, Li Xu, Lixin Chen, Jun Lin, Cheng-Te College of Materials Science and Engineering Zhejiang University of Technology Hangzhou310014 China Qianwan Institute of CNITECH Ningbo315336 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Department of Bioengineering University of California Los AngelesCA90095 United States School of Physics Harbin Institute of Technology Harbin150001 China Key Laboratory of Control of Quality and Safety for Aquatic Products Chinese Academy of Fishery Sciences Beijing100141 China Department of Urology The Second Affiliated Hospital of Guangzhou Medical University Guangdong 510260 China Guangdong Key Laboratory of Urology Guangzhou Medical University Guangdong 511495 China Institute of Mass Spectrometry Zhejiang Engineering Research Center of Advanced Mass Spectrometry and Clinical Application Ningbo University Ningbo315211 China Zhenhai Institute of Mass Spectrometry Ningbo315211 China Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo315211 China College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou310018 China

The binding of oxalic acid (OA) with metal ions, particularly calcium ions, is a key factor in kidney stone formation, as it produces insoluble calcium oxalate, which crystallizes and accumulates in the kidneys. Consequently, OA in urine is commonly considered a significant biomarker for clinical diagnosis and early screening of kidney stones. This study reports churros-like V2Se9 nanostructures synthesized using a solvothermal method (high pressure and temperature) for sensitive and selective electrochemical detection of OA in urine. The electrodes made of churros-like V2Se9 hybridized with reduced graphene oxide (rGO) for OA recognition, demonstrated a linear range from 20 nM to 4 mM, with an extremely low detection limit of 9.7 nM. To enable fast, user friendly, and accurate point-of-care testing (POCT) for OA in urine samples, we designed and developed a portable workstation integrated with smartphone for data visualization. This is the first study to utilize the V2Se9 system for highly sensitive biosensor applications, highlighting its potential to advance screening techniques for key indicators of kidney stones by incorporating novel transition metal chalcogenide nanomaterials in POCT devices. © 2025 Elsevier B.V.

关键词： Electrochemical biosensors

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Load balancing transmission technology of network communication based on phase spectrum compensation 7

Load balancing transmission technology of network communicat...

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2021 7th International Conference on Manufacturing technology and Applied Materials, ICAMMT 2021

作者： Zhai, Qian Lu, Xing Hua Huali College Guangdong University of Technology Institute of Computer Control Technology Guangzhou511325 China

In order to improve the load balance scheduling transmission ability of multi-frequency network communication in high-order nonlinear system, load balance design is needed. A load balance transmission method of multi-frequency network communication in high-order nonlinear system based on phase spectrum compensation is proposed. The time domain model of high-order nonlinear system multi-frequency network communication load is constructed by multi-frequency modulation phase spectrum compensation method. The feature detection of high-order nonlinear system multi-frequency network communication load is realized by high-order statistical feature connection identification and communication load balancing method. The autocorrelation constraint parameters of high-order nonlinear system multi-frequency network communication load are analyzed. The multi-dimensional array networking structure model of high-order nonlinear system multi-frequency network communication load is constructed by spatial spectral density analysis method. Combined with phase spectrum compensation and signal detection methods, the extracted high-order nonlinear system multi-frequency network communication load spectrum features are adaptively scheduled and filtered. In the wireless communication networking environment, load balance transmission of communication load in multi-frequency network of high-order nonlinear system is realized. The simulation results show that this method has better balance and lower error rate in multi-frequency network communication load balancing transmission, which improves the accuracy of multi-frequency network communication load balancing scheduling in high-order nonlinear systems. © Published under licence by IOP Publishing Ltd.

关键词： Time domain analysis

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The study of hierarchical branch prediction architecture

The study of hierarchical branch prediction architecture

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14th IEEE Int. Conf. on Computational Science and Engineering, CSE 2011, the 11th International Symposium on Pervasive Systems, Algorithms, and Networks, I-SPAN 2011, and the 10th IEEE Int. Conf. on Ubiquitous Computing and Communications, IUCC 2011

作者： Jin, Wenbing Dong, Jing Lu, Keqin Li, Yanhua School of Computer Science and Technology Beijing Institute of Technology Beijing China North Automatic Control Technology Institute Taiyuan China

ISBN: (纸本)9780769544779

Branch prediction is critical to the instruction-level parallelism. Researchers have been focusing on branch direction algorithm for a long time and recent improvement on the prediction accuracy in literatures is achieved by increasing the complexity of algorithms and at the cost of enlarging the branch target buffers. Thus many of these high accuracy branch prediction approaches cannot be implemented in practice due to the boundary to access and high hardware cost. This paper proposes a hierarchical branch prediction architecture (HBPA), within which complex or time-consuming algorithms and overlarge branch target buffers are moved from the front-end of instruction pipeline to the write-back stage. HBPA speeds up the branch prediction thanks to the simpler front-end structure. Meanwhile a preferable algorithm and compatible buffers can be implemented in the hierarchical memory, which assures the feasibility of HBPA. Effectiveness of HBPA in terms of misprediction rate and IPC is measured and the results suggest a definite improvement on performance. In a word, the hierarchical branch predictor is novel, efficient and applicable to the current as well as future aggressive processors. © 2011 IEEE.

关键词： Pipelines

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Research on UAV Time Delay controller Based on Improved Smith Training Neural Network

Research on UAV Time Delay Controller Based on Improved Smit...

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2018 IEEE International Conference of Safety Produce Informatization, IICSPI 2018

作者： Lu, Xinghua Institute of Computer Control Technology Huali College Guangdong University of Technology Zengcheng Guangzhou China

ISBN: (纸本)9781538655139

In the UAV flight process, when subjecting to strong airflow, attitude adjustment is delayed, resulting in the poor flight stability. Therefore, an improved Smith UAV controller is proposed based on neural network training. And the establishment of UAV flight control system model with parameter uncertainties is taken in the environment of disturbances and modeling errors, the improved Smith neural network is used for training, attitude adjustment and time delay compensation of UAV flight. Given the steady-state error caused by time delay, the state feedback adaptive adjustment is used to adjust the actuator input for flight attitude values in strong airflow. The adjustment of the UAV center speed is carried out, the center of gravity is moved down. In multilayer neural network, the Smith training is used for approximation of multivariate function, reduce the delay of the UAV flight attitude adjustment to achieve optimal control. The simulation results show that the method has the advantages of less time delay for aircraft attitude adjustment, which has steady state tracking performance of attitude parameters, improving the stability of flight control. Besides, the real-time performance of control command receiving and sending is improved to ensure the stability of UAV flight. © 2018 IEEE.

关键词： Stability

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Research on UAV time delay controller based on improved smith training neural network

Research on UAV time delay controller based on improved smit...

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2017 International Conference on computer technology, Electronics and Communication, ICCTEC 2017

作者： Lu, Xinghua Institute of Computer Control Technology Huali College Guangdong University of Technology Zengcheng Guangzhou China

ISBN: (纸本)9781538657843

关键词： Stability

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Random and Malicious Packet Transmission Failures on Multi-Hop Channels in Networked control Systems

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IFAC-PapersOnLine 2016年第22期49卷 49-54页

作者： Cetinkaya, Ahmet Ishii, Hideaki Hayakawa, Tomohisa Department of Computer Science Tokyo Insitute of Technology Yokohama226-8502 Japan Department of Systems and Control Engineering Tokyo Institute of Technology Tokyo152-8552 Japan

We address the control problem of a linear dynamical system over a multi-hop network. The transmissions of state and control packets over the network are assumed to be subject to failures that may be due to packet drops by malicious and nonmalicious nodes as well as random and malicious data corruption issues. We utilize probabilistic and asymptotic bounds of transmission failure ratios to characterize not only the links and paths of a network but also the network itself. This characterization allows us to deal with multiple failures that depend on each other, and coordinated malicious attacks on the network. By utilizing this characterization we also obtain a condition for the closed-loop stability. © 2016

关键词： Networked control systems

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A Flexible MATLAB Tool for Optimal Fractional-order PID controller Design Subject to Specifications

A Flexible MATLAB Tool for Optimal Fractional-order PID Cont...

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第三十一届中国控制会议

作者： TEPLJAKOV Aleksei PETLENKOV Eduard BELIKOV Juri Department of Computer Control Tallinn University of TechnologyTallinnEstonia Institute of Cybernetics Tallinn University of TechnologyTallinnEstonia

ISBN: (纸本)9781467325813

In this paper,we present a flexible optimization tool suitable for fractional-order PID controller design with respect to given design ***-order controllers are based on the rapidly evolving scientific field called fractional-order *** concepts are applicable in solving many scientific and engineering problems,including robust control system design. The fractional PID is a natural evolution of the conventional PID controller and as such new tuning strategies are now possible due to enhanced accuracy of the fractional-order *** presented tool,which is a part of FOMCON—a MATLAB fractional-order calculus oriented toolbox,—uses numerical optimization methods to carry out the tuning and obtain a controller for a chosen plant to be controlled,which can either be a fractional-order plant or an integer-order plant.

关键词： fractional calculus fractional pid pid control matlab toolbox

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