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7th Chinese Conference on Swarm Intelligence and Cooperative Control, CCSICC 2023

作者： Li, Haoqi Hu, Jiangping Zhou, Qingrui Lv, Maolong Ghosh, Bijoy K. School of Automation Engineering University of Electronic Science and Technology of China Chengdu611731 China University of Electronic Science and Technology of China Huzhou313000 China Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Beijing100094 China Air Traffic Control and Navigation College Air Force Engineering University Xian710051 China Department of Mathematics and Statistics Texas Tech University LubbockTX79409-1042 United States

ISBN: (纸本)9789819733279

The safety of multiple unmanned aerial vehicle (multi-UAV) systems threatened by enemy missiles is crucial for their effective formation control. In this paper, a distributed safety control strategy is developed that enables multi-UAV systems to execute formation tasks while avoiding enemy missiles. The proposed method considers enemy missiles as dynamic constraints on the multi-UAV system and is adaptable to changes in the number of UAVs. By ensuring each UAV remains within a defined safe set, the system can avoid incoming missiles while maximizing operational freedom for each UAV. The control strategy utilizes the backstepping control technique, making the computational process relatively inexpensive. Simulation results validate the effectiveness and adaptability of the proposed method in continuously changing threat environments. Our approach offers a promising solution for achieving safe and efficient multi-UAV cooperative operations in hostile environments. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Lyapunov functions

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A Review of Coordinated Control of DC Microgrids in PEDF Buildings

A Review of Coordinated Control of DC Microgrids in PEDF Bui...

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IEEE Asia Power and Energy engineering Conference (APEEC)

作者： Ziyi Ye Dongsheng Cai Shuang Luo Huanli Lu Jian Li Qi Huang School of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China Guiyang Engineering Corporation Limited Guiyang China Guiyang Engineering Corporation Limited Chengdu China School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (数字)9798350373479

ISBN: (纸本)9798350373486

Microgrid is an important means to improve the utilization rate of distributed renewable energy, which is important for energy saving and emission reduction and realizing sustainable energy development. As DC microgrids can efficiently access energy sources such as photovoltaic and storage batteries, and DC equipment is increasing day by day, DC microgrids have a good development prospect. The application of DC microgrids in PEDF(photovoltaic, energy, DC, flexible) buildings can effectively utilize these advantages. The article firstly introduces the microgrid structure in the PEDF building. Secondly, it selects the flexible interconnection module of the microgrid, and combs the overall topology of the microgrid. Finally, it analyzes the control mode of each unit, and generalizes and summarizes the coordinated control mode of the microgrid in different working states.

关键词： Photovoltaic systems Renewable energy sources Reviews Electricity Buildings Microgrids Stability analysis

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Achieving Spherical Longitude Circumnavigation of One Target in 3D

Achieving Spherical Longitude Circumnavigation of One Target...

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2023 China automation Congress, CAC 2023

作者： Yu, Ce Shi, Yingjing Zhou, Chen Li, Rui School of Automation Engineering University of Electronic Science and Technology of China Chengdu611731 China China Ship Development and Design Center Shanghai Branch Shanghai201108 China

ISBN: (纸本)9798350303759

This paper investigates the localization and circumnavigation problem of an unknown target in 3D space. The agents use only bearing information of the target and the distance information is not available. To fit for the characteristics of three-dimensional space, the spherical longitude circumnavigation pattern is proposed, which is significant in military areas such as target attacking. As first step, an estimator is presented to locate the target using bearing measurements. Based on this, a control protocol combined with a normal vector coordinator are designed by longitude deviation to drive multiple agents to desired different planes. Theoretical proof and simulations indicate the validity of the proposed method. © 2023 IEEE.

关键词： Multi agent systems

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Research on microstrain loading device and strain detection method based on SWCNT strain sensor 9

Research on microstrain loading device and strain detection ...

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9th International Symposium on Sensors, Mechatronics, and automation System, ISSMAS 2023

作者： He, Huajun Zheng, Fuzhong Zhang, Jie Sun, Shaohua Tang, Zhichao Cao, Qiang School of Automation Chengdu University of Information Technology Chengdu610225 China Intelligent Manufacturing and Automobile School Chongqing College of Electronic Engineering Chongqing401331 China NO.7 Oil Production Plant PetroChina Changqing Oilfield Company Qingyang745708 China

ISBN: (纸本)9781510672802

Monitoring the microstrain on the surface of equipment is of great significance for its health monitoring and daily maintenance. A microstrain detection method is researched in this article based on the photoluminescence characteristics of SWCNT materials. The detection of microstrain can be achieved by using the SWCNT strain sensing film pasted on the surface of the tested equipment. A standard strain gauge can also be pasted on the back of the corresponding position where the SWCNT strain sensing film is pasted to check the detection accuracy of the SWCNT strain sensing film. A microstrain loading device is designed in this paper. Then, a simulation study on the stress distribution of components with different shapes and sizes is conducted. Simulation results indicate that the geometric shape of the tested component has a significant impact on the stress distribution. © 2024 SPIE.

关键词： Sensors Signal processing Design and modelling Humidity Photoluminescence Safety equipment Analog to digital converters Scientific research Speckle interferometry Thin films

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Simulation research on the fluorescence excitation and acquisition of SWNT strain sensor based on the principle of photoluminescence 4

Simulation research on the fluorescence excitation and acqui...

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4th International Seminar on Artificial Intelligence, Networking and Information technology, AINIT 2023

作者： Zhang, Jie Zheng, Fuzhong Li, Zhonghao Lu, Yuting Wang, Shan Cao, Qiang Intelligent Manufacturing and Automobile School Chongqing College of Electronic Engineering Chongqing China School of Automation Chengdu University of Information Technology Chengdu China College of Mechanical Engineering Sichuan University of Science and Engineering Chengdu China PetroChina Changqing Oilfield Company NO.7 Oil Production Plant Qingyang China

ISBN: (纸本)9798350314526

The non-contact strain sensor based on the single-walled carbon nanotube (SWCNT) photoluminescence effect has a great potential that attracted extensive research from both domestic and international scholars. In order to research the non-contact strain sensor, the current paper proposed a fluorescence excitation and acquisition system platform for SWCNT strain sensors, and designed the structures of its optical components. The design, installation, and debugging of this system are conducted. Results show that the fluorescence excitation and acquisition system established in this paper is a suitable platform for SWCNT optical full field strain measurement. Based on this system, the fluorescence excitation and acquisition of the SWCNT film are simulated and analyzed by using OpticStudio software. Simulation results show that the fluorescence intensity is in partial positively correlated with the excitation light intensity, and the light spot diameter could be controlled within 0.1mm. The light spot scanning resolution of the SWNT film achieved the expected effect. © 2023 IEEE.

关键词： Photoluminescence

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BCDNet: A Fast Residual Neural Network For Invasive Ductal Carcinoma Detection

arXiv

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arXiv 2024年

作者： Lin, Yujia Lian, Aiwei Liao, Mingyu Yuan, Shuangjie Glasgow College University of Electronic Science and Technology of China Chengdu China School of Automation Engineering University of Electronic Science and Technology of China Chengdu China

It is of great significance to diagnose Invasive Ductal Carcinoma (IDC) in early stage, which is the most common subtype of breast cancer. Although the powerful models in the Computer-Aided Diagnosis (CAD) systems provide promising results, it is still difficult to integrate them into other medical devices or use them without sufficient computation resource. In this paper, we propose BCDNet, which firstly upsamples the input image by the residual block and use smaller convolutional block and a special MLP to learn features. BCDNet is proofed to effectively detect IDC in histopathological RGB images with an average accuracy of 91.6% and reduce training consumption effectively compared to ResNet 50 and ViT-B-16. © 2024, CC BY.

关键词： Lung cancer

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Dynamic modeling and simulation of blade-casing system with rubbing considering time-varying stiffness and mass of casing

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Applied Mathematics and Mechanics(English Edition) 2025年第5期46卷 849-868页

作者： Hui MA Hong GUAN Lin QU Xumin GUO Qinqin MU Yao ZENG Yanyan CHEN School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of ChinaNortheastern UniversityShenyang 110819China Sunny Optical Technology(Group)Co.Ltd. Ningbo 315400Zhejiang ProvinceChina Aircraft Strength Institute of China Xi’an 710065China AECC Sichuan Gas Turbine Research Institute Chengdu 610500China

As a common fault of the aero-engine,the blade-casing rubbing(BCR)has the potential to cause catastrophic *** this paper,to investigate the dynamic responses and wear characteristics of the system,the laminated shell element is used to establish the finite element model(FEM)of a flexibly coated casing *** the shell element,the blade is modeled,and the surface stress of the blade is *** stress-solving method of the blade is validated through comparisons with the measured time-domain waveform of the ***,a dynamic model of a blade-flexibly coated casing system with rubbing is proposed,accounting for the time-varying mass and stiffness of the casing caused by coating *** effects of the proposed flexible casing model are compared with those of a rigid casing model,and the stress changes induced by rubbing are *** results show that the natural characteristics of the coated casing decrease due to the coating *** flexibly coated casing model is found to be more suitable for studying casing ***,the stress changes caused by rubbing are slight,and the change in the stress maximum is approximately 5%under the influence of the abrasive coating.

关键词： dynamic modeling flexibly coated casing rubbing coating wear nonlinear vibration

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PETRFusion: Multi-Sensor Fusion Based BEV Semantic Segmentation Network for Autonomous Driving

PETRFusion: Multi-Sensor Fusion Based BEV Semantic Segmentat...

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International Conference on Intelligent Transportation

作者： Yang Zhao Jingyu Du Qihang Yang Ningze Cai Zhinan Peng Huiqin Zhan Hong Cheng School of Automation Engineering University of Electronic Science and Technology of China Chengdu China Glasgow College University of Electronic Science and Technology of China Chengdu China

ISBN: (数字)9798331505929

ISBN: (纸本)9798331505936

Bird's Eye View (BEV) based perception algorithms are receiving increasing attention in the field of autonomous driving, how to more effectively utilize multi-sensor data in BEV is a challenge. In this paper, we propose PETRFusion, a BEV segmentation network that integrates multiple cameras with a LiDAR sensor. We focus on the task of BEV segmentation, designing the network architecture based on the similarity between LiDAR point clouds and semantic segmentation maps. The proposed method uses point cloud features as queries for semantic segmentation and employs Transformers to fuse image features with point cloud features, thereby maximizing the preservation of 3D spatial information from the point cloud. Additionally, we enhance the 3D positional encoder of PETR to provide more reliable 3D image features. We conduct detailed validation on the nuScenes dataset and achieve state-of-the-art results.

关键词： Point cloud compression Three-dimensional displays Laser radar Semantic segmentation Network architecture Cameras Transformers Reliability Autonomous vehicles Intelligent transportation systems

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An early fault characteristics analysis method of reactor canned motor pump based on signal enhancement Hilbert transform and complete ensemble empirical mode decomposition with optimized adaptive noise

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Measurement: Journal of the International Measurement Confederation 2025年 255卷

作者： Liu, Zhilong Li, Meng National Key Laboratory of Nuclear Reactor Technology Nuclear Power Institute of China Chengdu610213 China School of Automation Engineering University of Electronic Science and Technology of China Chengdu611730 China

The canned motor pump (CMP) is the key rotating equipment of nuclear reactors, which not only controls the flow of key medium in the primary circuit, but also is an important power equipment of the auxiliary system. In view of the difficulty in identifying the early fault characteristics of the reactor canned motor pump, a method based on complete ensemble empirical mode decomposition with optimized adaptive noise (CEEMDOAN) and signal enhancement Hilbert transform (SEHT) is proposed. Firstly, the vibration signal of the canned motor pump is modally decomposed by CEEMDOAN, and the target intrinsic mode function (TIMF) fraction is selected based on the selection criteria of the proposed TIMF and the standard deviation of white noise, so as to complete the noise reduction of the original vibration signal. Secondly, by improving the Hilbert transform (HT) using the designed function with enhanced frequency and amplitude, a SEHT method is proposed to process the TIMF component to analyze the early fault characteristics of the canned motor pump. Finally, simulation and experimental verification are carried out. The results have shown that the proposed method can effectively identify the early fault characteristics of the canned motor pump, which further improves the reliability of the canned motor pump operation, and has better performance than the existing methods. © 2025 Elsevier Ltd

关键词： Linear transformations

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A Digital Noise Signal Synthesis Method Based on a Combination of Table Look-up and Transformation 22

A Digital Noise Signal Synthesis Method Based on a Combinati...

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22nd IEEE International Conference on Communication technology, ICCT 2022

作者： Xiao, Yindong Peng, Bo Liu, Ke Fu, Zaiming Hu, Cong School of Automation Engineering University of Electronic Science and Technology of China Chengdu China Guilin University of Electronic Technology Guangxi Key Laboratory of Automatic Testing Technology and Instruments Guilin China

ISBN: (纸本)9781665470674

Digital noise signal synthesis methods have good scalability and flexibility, and can be divided into table look-up and transform methods depending on the implementation method. The accuracy of noise distribution synthesized by the look-up table method is limited by the storage depth, on the other hand, the maximum synthesis speed of the transform method is limited by the hardware computation speed. In this paper, we propose a new implementation method for digital noise signal synthesis, which divides the noise output into high probability intervals and low probability intervals by probability. The high probability interval noise generation is based on the look-up table method, and the low probability interval noise generation is based on the transformation method for real-time computation. The method is validated experimentally in terms of distribution accuracy, storage space occupation and output speed. The results show that the method has higher output accuracy than the look-up table method and faster output speed compared to the transformation method. © 2022 IEEE.

关键词： Table lookup

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