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Recent Patents on Intervention Auxiliary Device of Tracheal Stent

Recent Patents on engineering 2023年第6期17卷 147-161页

作者： Bao, Yudong Zhan, Yang Li, Xu Qu, Shengqian School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin150080 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Harbin University of Science and Technology Ministry of Education Harbin150080 China

Background: The trachea is an essential part of the respiratory system. Lesions such as inflammatory granulomas cause Bronchial stenosis, which may be life-threatening. Tracheal stent placement is vital for treating airway stenosis, relieving dyspnea, and improving symptoms. Objective: This paper reviews the patents of tracheal stent placement and removal and auxiliary devices for diagnosis in recent years (from 2007 to the present) and introduces the characteristics and development of tracheal stent implantation, treatment, and assistive removal devices. In order to meet the need for more rapid operation and cause less harm to the human trachea, the structure of the tracheal stent surgical device needs to be improved continuously. Methods: This paper summarizes the research status of tracheal stent placement and removal and auxiliary devices for diagnosis and treatment in recent years and discusses the structural types and applications of tracheal stent auxiliary devices. Results: This paper summarizes the patent application of tracheal stent placement and removal and auxiliary devices for diagnosis and treatment at the present stage. This paper analyzes the main problems in its development and discusses the solutions to the problems and the future research di-rection. Conclusion: Tracheal stent surgical devices need further improvement in mechanical design, control strategy, etc. Tracheal stent surgical devices should be developed into universal, semi-automatic, and multi-functional machines. The relevant patents of the auxiliary device of the tracheal stent need to be developed. © 2023 Bentham science Publishers.

关键词： Stents

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Research on Digital Twin system Platform Framework and Key Technologies of Unmanned Ground Equipment

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Complex system Modeling and Simulation 2024年第2期4卷 109-123页

作者： Kunyu Wang Lin Zhang Cheng Xu Han Lu Zhen Chen Hongbo Cheng Rui Guo the School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China the State Key Laboratory of Intelligent Manufacturing System Technology Beijing 100854China the Beijing Institute of Electronic System Engineering Beijing 100854China

As an emerging technology,digital twin is expected to bring novel application modes to the whole life cycle process of unmanned ground equipment,including research and development,design,control optimization,operation and maintenance,*** highly dynamic,complex,and uncertain characteristics of unmanned ground equipment and the battlefield environment also pose new challenges for digital twin *** from the new challenges faced by the digital twin of unmanned ground equipment,this paper designs a service-oriented cloud-edge-end collaborative platform architecture of the digital twin system of unmanned ground equipment,and further analyzes several key technologies supporting the implementation of the platform architecture.

关键词： unmanned ground equipment digital twin native cloud platform Modeling and Simulation(M&S) artificial intelligence

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Recent Patents on Red Jujube Harvester

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Recent Patents on engineering 2023年第6期17卷 162-176页

作者： Bao, Yudong Zhao, Yafei Zhang, Jianlong School of Mechanical and Power Engineering Harbin University of Science and Technology Harbin150080 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Harbin University of Science and Technology Ministry of Education Harbin150080 China

As the demand for jujubes grows, so does the acreage of jujubes. However, the main method of jujube picking is traditional manual picking, which is the most time-consuming and la-bor-intensive in the production chain. Through the analysis and discussion of the patents on the jujube harvester, some valuable conclusions are drawn to predict the research and development of the jujube harvester in the future. An overview of various representative patents of the current jujube harvester is provided in this paper. A large number of patents of jujube harvesting devices have been summarized, the characteristics of these patents have been analyzed and compared, and the further development trend of jujube harvesting machines has been developed. The research on the multi-function, intelligence and versatility of the jujube harvester is helpful to solve the problems of low efficiency, low quality, and poor versatility of the jujube harvester. © 2023 Bentham science Publishers.

关键词： Efficiency

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Multi-layer network embedding on scc-based network with motif

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Digital Communications and Networks 2024年第3期10卷 546-556页

作者： Lu Sun Xiaona Li Mingyue Zhang Liangtian Wan Yun Lin Xianpeng Wang Gang Xu Department of Communication Engineering Institute of Information Science TechnologyDalian Maritime UniversityDalian116026China Key Laboratory of Big Data Intelligent Computing Chongqing University of Posts and TelecommunicationsChongqing400065China Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province DUT School of Software Technology&DUT-RU International School of Information Science and EngineeringDalian University of TechnologyDalian 116620China College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China School of Information and Communication Engineering Hainan UniversityHaikou 570228China State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China

Interconnection of all things challenges the traditional communication methods,and Semantic Communication and Computing(SCC)will become new *** is a challenging task to accurately detect,extract,and represent semantic information in the research of SCC-based *** previous research,researchers usually use convolution to extract the feature information of a graph and perform the corresponding task of node ***,the content of semantic information is quite *** graph convolutional neural networks provide an effective solution for node classification tasks,due to their limitations in representing multiple relational patterns and not recognizing and analyzing higher-order local structures,the extracted feature information is subject to varying degrees of ***,this paper extends from a single-layer topology network to a multi-layer heterogeneous topology *** Bidirectional Encoder Representations from Transformers(BERT)training word vector is introduced to extract the semantic features in the network,and the existing graph neural network is improved by combining the higher-order local feature module of the network model representation network.A multi-layer network embedding algorithm on SCC-based networks with motifs is proposed to complete the task of end-to-end node *** verify the effectiveness of the algorithm on a real multi-layer heterogeneous network.

关键词： Semantic communication and computing Multi-layer network Graph neural network Motif

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Dense-Cascade Neural Network for Thermal and Visible Image Registration 20

Dense-Cascade Neural Network for Thermal and Visible Image R...

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20th IEEE International Conference on Mechatronics and Automation, ICMA 2023

作者： Xu, Jiahao Ye, Xiufen College of Intelligent System Science and Engineering Harbin Engineering University No.145 NanTong Street Heilongjiang Harbin150001 China

ISBN: (纸本)9798350320831

The cross-modality image registration task is becoming more and more important in the field of image fusion, thermal and visible image fusion can reduce the impact of environmental factors while maintaining the image's texture and detail. However, the common registration methods always have the problem of overfitting and poor generalization when facing large modality span task. To register the thermal and visible images, a simple yet effective registration model called Dense-Cascade network is presented in this paper. Our network uses two independent branches to extract the cross-modality features respectively. In order to further reduce the regression error, we use a cascade structure by stacking the networks and using STN layer to achieve gradient backpropagation. Finally, to validate the robustness of our model, we add gaussian noise severity from 0-4 on thermal images to test the performance of our models, and the results show that the registration performances of our models are better than others. © 2023 IEEE.

关键词： Image fusion

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Locating Methods for Partial Blockages and Leaks in Water Supply systems

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International Journal of Fluid Machinery and systems 2025年第1期18卷 1-12页

作者： Zhang, Baoyu Li, Decai School of Intelligent Manufacturing Jiangsu Food &Pharmaceutical Science College Huaian223003 China College of Mechanical and Electrical Engineering Northeast Forestry University Harbin150040 China

The paper employs the method of characteristics to solve the transient flow control equations of pipelines, verifies the accuracy of the numerical method using data from existing literature, and establishes a simple pumping station water supply system. It investigates the detection of blockages and leaks in the pipelines of the system while considering variations in pipe elevation and pump boundary conditions. It is found that pressure waves generated by rapid closure of end valves reflect when they reach the locations of blockages and leaks. The reflected pressure waves back to the valve cause abrupt changes in pressure signals, and different types of faults result in different forms of abrupt changes. Based on the time of the abrupt change and the wave speed of the pipeline, the locations of blockages and leaks can be calculated. The final research results confirm that the method demonstrates high precision in locating blockages and leaks across different parameters, with detection errors below 1% under ideal conditions. Moreover, it effectively identifies blockages and leaks at points of pipe elevation changes and pipe connections. Importantly, it displays strong applicability even in scenarios where both blockages and leaks coexist within the system. © 2025, Turbomachinery Society of Japan. All rights reserved.

关键词： Pipelines

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Research on Key Technologies of Ceramic MEMS Platinum Rhodium 10-platinum Thermocouple

Research on Key Technologies of Ceramic MEMS Platinum Rhodiu...

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2023 IEEE International Conference on Electrical, Automation and Computer engineering, ICEACE 2023

作者： Zhang, Hongquan Xu, Dexin Yu, Guangbin Yu, Junchang School of Intelligent Science and Engineering Harbin Engineering University Harbin China Nanhai Institute of Harbin Engineering University Harbin Engineering University Sanya China School of Mechanical and Electrical Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9798350309614

In order to solve many technical problems of high temperature thermocouple for gas turbine temperature detection, such as large heat capacity, slow response time, and inability to mount table, a ceramic MEMS high temperature thermocouple with redundant function was developed based on ceramic MEMS technology. Based on the micromachining technology, the thermocouple base was made, and the sensitive heating electrode pattern of platinum rhodium 10-platinum thermocouple (S-type thermocouple) was formed by the film process. The flexible thermocouple was formed by the sandwich packaging of the sensitive element, and the high temperature thermocouple calibration test system was developed. The experimental results show that the designed MEMS high temperature thermocouple has the characteristics of fast response, and can be installed on a smooth surface. The output sensitivity of the thermocouple is compared with that of the secondary standard platinum rhodium 10-platinum thermocouple in the temperature range of 0 ∼ 1000 °C, the deviation is ±0.3%, and the 90% response time is 22 ms. © 2023 IEEE.

关键词： ceramic micromachining Fast response flexibility Platinum rhodium 10 platinum thermocouple Redundancy

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Ascent Trajectory Planning for Combined-Power Reusable Launch Vehicles Based on the DDPG Algorithm

Ascent Trajectory Planning for Combined-Power Reusable Launc...

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2024 China Automation Congress, CAC 2024

作者： Zhao, Xinhua Han, Kelong Wang, Meng Li, Jintao Zong, Fei Harbin Engineering University College of Intelligent System Science and Engineering Harbin China China Academy of Space Technology Qian Xuesen Laboratoty of Space Technology Beijing China

ISBN: (纸本)9798350368604

This paper proposes an ascent phase trajectory planning method for combined-cycle reusable launch vehicles (CRLV) based on the DDPG algorithm. First, the motion model and flight constraint model for the vehicle's ascent phase were established. Based on these constraints and flight characteristics, a Markov Decision Process (MDP) was designed using the DDPG algorithm to meet flight requirements, addressing the online trajectory planning problem for the CRLV. The vehicle can calculate the optimal control values in real time based on its current motion state. Finally, by comparing the optimization results of the DDPG algorithm and the Particle Swarm Optimization (PSO) algorithm, the superiority and effectiveness of the proposed method were fully demonstrated. © 2024 IEEE.

关键词： Markov processes

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Resilient sliding mode control for 2D CPSs under denial-of-service attacks

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science China(Information sciences) 2024年第6期67卷 262-278页

作者： Lingling LI Rongni YANG Zhiguang FENG Ligang WU College of Intelligent Systems Science and Engineering Harbin Engineering University School of Control Science and Engineering Shandong University School of Astronautics Harbin Institute of Technology

This study addresses the resilient sliding mode control(SMC) problem for two-dimensional cyber-physical systems(2D CPSs) characterized by the Roesser model under denial-of-service attack(DoSA), which can interfere with signal transmission over the communication network. First, the DoS-A model is established by introducing constraints on the Do S frequency and duration. Then, based on active or silent attack situations, the considered system is described as a switched mode. Furthermore, together with Lyapunov theory, the average dwell time technique is employed to deduce sufficient criteria that assure the existence of the desired sliding mode controller. Finally, verification examples are provided to show the validity of the established SMC scheme.

关键词： two-dimensional systems cyber-physical systems denial-of-service attack resilient sliding mode control

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Fractional Order Iteration for Gradient Descent Method Based on Event-Triggered Mechanism

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Journal of systems science & Complexity 2023年第5期36卷 1927-1948页

作者： LU Jiajie WANG Yong FAN Yuan Department of Automation University of Science and Technology of ChinaHefei 230026China Anhui Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment School of Electrical Engineering and AutomationAnhui UniversityHefei 230601China

In this work,a novel gradient descent method based on event-triggered strategy has been proposed,which involves integer and fractional order ***,the convergence of integer order iterative optimization method and the stability of its associated system with integrator dynamics are *** on this result,a fractional order iteration approach has been developed by modelling the system with fractional order ***,to reduce the comsumption of computation,a feedback based event-triggered mechanism has been introduced to the gradient descent *** convergence of this new event-triggered optimization algorithm is guaranteed by using a Lyapunov method,and Zeno behavior is proved to be avoided ***,the effectiveness and advantages of the proposed algorithms are verified by numerical simulations.

关键词： Event-triggered mechanism fractional order iteration gradient descent Zeno behavior

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