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2nd International Conference on Electronic Information engineering and Computer Communication, EIECC 2022

作者： Li, Rui Yin, WeiWai Fang, Liang Wang, Rui Zou, HaoChen Meng, Li State Grid Jilin Power Supply Company UHV Branch State Grid Jilin Electric PowerSupply Company China Jilin Institute of Chemical Technology National Local Joint Engineering Research Center for Smart Distribution Grid Measurement and Control with Safety Operation Technology China

ISBN: (纸本)9781510663121

The evaluation of the bird damage system is of great significance for the protection of bird damage prevention in high-voltage transmission lines. The entropy weight method is introduced into the TOPSIS evaluation model, and the weight of each evaluation index is calculated with information entropy to reduce the subjectivity of determining the weight. Then an improved TOPSIS bird damage system evaluation model based on the entropy weight method is established, The Jilin Province's high-voltage transmission line 2021 annual bird damage evaluation was taken as an example, and the improved model was used to evaluate it. The results show that This model can weaken the impact of outliers, reduce errors caused by subjective empowerment, and effectively evaluate bird damage levels in real time. © 2023 SPIE.

关键词： Electric lines

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Frequency Domain Separation of DAS Multi-Source Aliased Signals

Frequency Domain Separation of DAS Multi-Source Aliased Sign...

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2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Gu, Huaxin Liu, Shuaiqi Yu, Feihong Xu, Deyu Chen, Xingwei Shao, Liyang Wu, Yu Zhang, Haifeng College of Innovation and Entrepreneurship Southern University of Science and Technology Shenzhen China Southern University of Science and Technology Department of Electrical and Electronic Engineering Shenzhen China School of Information and Communication Engineering University of Electronic Science and Technology Chengdu China Research Institute of Tsinghua University Advanced Measurement and Control and Equipment R&d Center Chengdu China

ISBN: (纸本)9798350312614

In this paper, fast independent vector analysis (FastIVA) based on convolutional aliasing model is proposed to separate the aliased signals collected by distributed acoustic sensing (DAS) system, and the time-frequency entropy is used to judge the separation performance. The results show that the time-frequency entropy interval of the separated signals and the source signals correspond to each other, which means that the aliased signals are separated. This method is used to improve the accuracy of DAS system signal detection and recognition in complex real environment, and reduce the number of false alarm events. © 2023 IEEE.

关键词： convolutional aliasing model DAS FastIVA time-frequency entropy

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Simulation research on trajectory tracking control system of manipulator based on fuzzy PID control

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International Journal of Innovative Computing and Applications 2022年第5-6期13卷 269-277页

作者： Ma, Ruyi Li, Zeshen Jiang, Du Yun, Juntong Liu, Ying Liu, Yibo Bai, Dongxu Li, Gongfa Key Laboratory of Metallurgical Equipment and Control Technology Ministry of Education Wuhan University of Science and Technology Hubei Wuhan430081 China Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering Wuhan University of Science and Technology Hubei Wuhan430081 China Research Centre for Biomimetic Robot and Intelligent Measurement and Control Wuhan University of Science and Technology Wuhan430081 China Institute of Precision Manufacturing Wuhan University of Science and Technology Wuhan430081 China

In view of the influence of external environment interference, parameter changing and random noise in the process of manipulator trajectory tracking, as well as the problems of fuzzy PID control, such as fuzzy rules are not easy to set, quantisation interval and parameters are affected by subjective consciousness, which leads to the problem of insufficient performance of manipulator system. In this paper, firstly, in the MATLAB simulation environment, based on the D-H parameter model, the linkage model of the four degree of freedom manipulator is established, and the homogeneous transformation matrix of the manipulator is calculated. Then, through the application of fuzzy PID control in the Simulink toolbox, the optimal parameters of the controller are found by using the proportion factor self-adjusting strategy, and the corresponding trajectory tracking and forward inverse kinematics simulation are studied. The trajectory tracking curve of the manipulator is obtained. The research method and experimental results in the paper are of great significance for the simulation of articulated manipulator. Copyright © 2022 Inderscience Enterprises Ltd.

关键词： Simulink

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PCB vibration test program design

PCB vibration test program design

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System Reliability and Safety engineering (SRSE), International Conference on

作者： Hao Wang Han Zhang Jia Qi Quality and Reliability Center China Institute of Marine Technology and Economy Beijing China School of Measurement-Control Technology and Communications Engineering Harbin University of Science and Technology Harbin China

ISBN: (数字)9798350356083

ISBN: (纸本)9798350356090

This paper presents a vibration testing program designed to evaluate the reliability of PCB boards in complex underwater environments. The study thoroughly examines the structural components of the PCB and the vibrations it encounters throughout its lifecycle. Based on the characteristics of vibrations at different stages, corresponding testing standards and methods were developed, providing a scientific basis for the reliability assessment of PCB boards.

关键词： Vibrations Technical requirements Electric shock Reliability engineering Safety Transient analysis Standards Testing

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Combined Model Predictive control for Geosynchronous Satellite Station Keeping Using Electric Propulsion

Combined Model Predictive Control for Geosynchronous Satelli...

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Chinese control Conference (CCC)

作者： Heng Shi Xiaoxiang Liu Shuo Wang Ji Mai Beijing Institute of Control Engineering Beijing China Science and Technology on Space Intelligence Control Laboratory Beijing China Beijing Aerospace Institute for Metrology and Measurement Technology Beijing China

Novel combined model predictive control method is presented, which includes long-term trajectory planning, outer-loop model predictive trajectory and angular momentum control, and inner-loop attitude control. Firstly, the influence of long-period perturbation characteristics on long term station keeping of geosynchronous satellite is fully considered, and the station keeping trajectory is optimized for 3 months to 6 months. Then, taking the long-term planning results as the reference trajectory and considering the engineering constraint model, the outer-loop control is realized within 7 days to 14 days, so that the position trajectory meets the planning expectations and meets the requirements of orbit and angular momentum optimal control. The inner loop control adopts the attitude control method considering the continuous torque effect of small thrust, so as to meet the requirements of real-time angular momentum and attitude control with higher frequency. The method has been successfully verified by on-orbit flight tests, showing the characteristics of high control accuracy, high fuel utilization efficiency, and being adaptive to various engineering constraints.

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A Neural Network-based Method for Fast Angle Calibration of MEMS LiDAR

A Neural Network-based Method for Fast Angle Calibration of ...

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2021 International Conference of Optical Imaging and measurement, ICOIM 2021

作者： Lin, Dayong Zhao, Chunhui Gu, Yingying Xu, Yunfei Hua, Baocheng Qu, Zonghua Beijing Institute of Control Engineering Space Optoelectronic Measurement and Perception Lab Beijing China Beijing Institute of Control Engineering Science and Technology on Space Intelligent Control Laboratory Beijing China

ISBN: (纸本)9780738112121

MEMS LiDAR has been drawing more and more attention as a representative achievement in low power consumption and miniaturization integration of LiDAR research. To address the problem that traditional angle calibration methods for mechanical LiDAR are not completely applicable in MEMS LiDAR due to different sources of angle errors, a neural network-based method for fast angle calibration of MEMS LiDAR is proposed. The calibration field only consists of a rotating platform and an angular reflector. By modelling the calibration field and analyzing the error sources of MEMS LiDAR, including the mounting error, the nonlinear error, and the systematic error, a neural network model was then developed to correct the angle measurement errors. The experimental results show that the method is reasonable and effective and is able to achieve fast angle calibration of MEMS LiDAR. © 2021 IEEE.

关键词： MEMS

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Active Capsule Endoscope Robot: Current Status and Future Perspectives

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Recent Patents on engineering 2022年第4期16卷 30-49页

作者： Jiang, Jingang Sun, Yang Song, Shichang Yu, Xiaoyang Wu, Dianhao Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology No. 52 Xuefu Road Nangang District Heilongjiang Province Harbin150080 China School of International Studies Harbin Institute of Technology Harbin150001 China School of Measurement-Control Tech and Communications Engineering Harbin University of Science and Technology Harbin150080 China

Background: China is a big country with a vast territory, in which gastropathy has become a common high-incidence disease in daily life. Gastroscopy is an important means of diagnosis of gastropathy, but the use of a gastroscope causes a lot of pain to patients. A cable-free, non-invasive and painless diagnosis and treatment tool, an active capsule endoscope robot, can solve this problem very well. Capsule robot has become a new development hotspot. Objective: The study aims to provide an overview of the active endoscope capsule robot and introduce its classification, characteristics and development. Methods: This paper summarizes various scientific research achievements of the active endoscope capsule robot. The structural characteristics, advantages and disadvantages of various active endoscope capsule robots are introduced. Results: The active endoscope capsule robot has been analyzed and compared to other models. Its typical characteristics have been summarized. The main problems in its development are analyzed, its development trend is prospected, and the research status and future of active endoscope capsule robot are discussed. Conclusion: The active capsule robot is classified into two categories: bionic and non-bionic. The analysis shows that the capsule robot is an effective and safe initiative and has a very broad application prospect for various gastrointestinal tests compared to gastroscope, and helps alleviate the pain of patients. © 2022 Bentham Science Publishers.

关键词： Robots

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An Obstacle Avoidance Path Planning Algorithm for Manipulator in Deep Crate Grasping

An Obstacle Avoidance Path Planning Algorithm for Manipulato...

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2023 China Automation Congress, CAC 2023

作者： Yao, Zhuobin Gan, Yahui Han, Zao Gao, Huan Li, Ang School of Automation Southeast University Key Laboratory of Measurement and Control of Systems of Engineering Ministry of Education NanJing China Intel Joint Research Institute on Intelligent Edge Computing Nanjing YingQi Intelligent Technology Co. Ltd. NanJing China

ISBN: (纸本)9798350303759

The deep crate grasping problem is a major challenge for manipulator in industrial applications. In order to solve the issue of deep crate grasping and ensure the path quality of the algorithm, this paper proposes a new hybrid obstacle avoidance planning algorithm based on goal-biased rapidly exploring random tree and improved artificial potential field (RRT-APF). Initially, the algorithm strategizes an efficient trajectory for the working element within the operational area. Subsequently, it dissects this trajectory through sampling, creating a sequence of sub-target points. These points serve as the basis for obstacle avoidance planning within the manipulator's configuration space, mitigating planning complexities. Moreover, the RRT algorithm is employed to address the challenge of local optima within the artificial potential field method. The stochastic nature of the RRT algorithm plays a crucial role in enabling the APF algorithm to break free from local optima. Ultimately, the efficacy of the algorithm is demonstrated through the planning of a path for obstacle avoidance on the DOBOT CR5 manipulator using MATLAB. © 2023 IEEE.

关键词： Trees (mathematics)

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Design Of The Fuel Supply System For The Fuel Dispenser Patent Test

Design Of The Fuel Supply System For The Fuel Dispenser Pate...

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International Conference on Mechanical and Electronics engineering (ICMEE)

作者： Haiyang Li Yanzheng Liang Xinhong Yao Biliang Zhan Division of Thermo Engineering and Energy Sources Measured Technology Shanghai Institute of Measurement and Testing Technology Shanghai China Anhui Test Measurement and Control Ltd. Hefei China

ISBN: (数字)9798350307146

ISBN: (纸本)9798350307153

In order to provide a flowing fuel source for the measurement performance test device of fuel dispenser patent test, a fuel supply system was designed and manufactured. After the determination of the technical requirements for the fuel supply system, the structure, electrical and software design and key equipment selection were introduced at length in this paper. There are 3 kinds of ISOPAR L, D80, and D110 organic solvent (working medium) stored in 3 fuel tanks with actual capacity of 2m 3 , and the system has the functions of storage, circulation, temperature control of the working medium and fault self-inspection. In the electrical design, the DELTA DVP40EX200R PLC was selected as the core controller for the onsite equipment for its appropriate electrical resources and multiple auxiliary analog signal acquisition modules. And the human-machine interaction interface was the touch panel. After the design and manufacturing of the fuel supply system, a fuel dispenser metering performance test was conducted with the cooperation of the system. The test showed that the fuel supply system was designed reasonably and operated well. Furthermore, the fuel supply system designed in this article can not only be used for fuel dispenser pattern test, but also provide a solution for the automatic oil delivery system in oil depots.

关键词： Temperature measurement Technical requirements Performance evaluation Patents Solvents Software design Oils

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A Narrow Band Terahertz Perfect Absorber Based on Graphene Polarization Independence

A Narrow Band Terahertz Perfect Absorber Based on Graphene P...

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2022 International Conference on Internet of Things and Machine Learning, IoTML 2022

作者： Wang, Tao Wei, Jiang Sun, Xu Jia, Xiaodong Cheng, Ruijian Department of Aeronautical Electronic Engineering Aviation Maintenance NCOs Academy of Air Force Engineering University Henan Xinyang464000 China Institute of Applied Physics Jiangxi Academy of Sciences Jiangxi Nanchang330029 China Jiangxi Zhicheng Measurement and Control Technology Research Institute Co. Ltd Jiangxi Nanchang330029 China

ISBN: (纸本)9781510664913

In this paper, one kind of polarization independent terahertz perfect absorber of narrow band based on cross and open ring structure of graphene is proposed. The effects of Fermi energy level and structure size of graphene on the absorption characteristics of meta-material absorber were studied by using CST electromagnetic simulation software. The physical mechanism is explained by impedance matching theory. The results show that when the Fermi energy level of graphene is 0.5 eV, the radius of inner ring is 8 μm, the radius of outer ring is 11.5 μm, the width of cross is 1.5 μm, and the thickness of silica dielectric layer is 10 μm, the absorber can realize 98% perfect absorption in 4.48 THz. Moreover, due to the symmetry of the structure, the absorber is independent of polarization. This result has great applications for the realization of ultra-thin tunable smart devices in the terahertz band by using patterned graphene. © 2023 SPIE.

关键词： Graphene

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