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Communication Resource Planning Algorithm Based on Time Triggered DIMA Architecture

Journal of Beijing Institute of Technology 2019年第2期28卷 327-335页

作者： Hongchun Wang Buqun Luan Wensheng Niu School of Compute Science and Technology Xidian UniversityXi'an 710071China School of Communication Engineering Xidian UniversityXi'an 710071China Institute of Flight Control Tianjin Institute for Advanced Equipments of Tsinghua UnvierstityTianjin 300300China Aeronautical Computing Technique Research Institute Xi'an 710068China

Traditional scheduling algorithms for avionics communication have the shortcoming of messages accumulation,the efficiency and reliability of the service can be improved by combining the distributed integrated modular avionics(DIMA)system with a time trigger *** further improve the utilization of system resources,the static scheduling algorithm of time triggered service is *** making the time trigger message schedule dispersedly,the stabilities of both the available time slots for the event triggered messages and the system will be *** improved two-dimensional bin packing algorithm is also presented to achieve the above-mentioned purpose with an extra benefit of better delay performance.

关键词： distributed integrated modular avionics time-triggered two-dimensional bin packing algorithm

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A Combined Guidance Law for Intercepting Hypersonic Large Maneuvering Targets

A Combined Guidance Law for Intercepting Hypersonic Large Ma...

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Chinese Automation Congress (CAC)

作者： Bingqian Zhao Xiwang Dong Qingdong Li Zhang Ren Science and Technology on Aircraft Control Laboratory School of Automation Science and Electronic Engineering Beihang University Beijing China Beijing Advanced Innovation Center for Big Data and Brain Computing School of Automation Science and Electronic Engineering Beihang University Beijing China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

This paper proposes a combined guidance law based on differential geometry and true proportional guidance (TPN). Due to the increase of the interceptor acceleration component perpendicular to the speed direction, the line-of- sight angular rate can be converged quickly, and the convergence rate of the miss distance is faster than that of TPN. Therefore, the combined guidance law can intercept the target in a short time, reducing the possibility of target escape. This paper gives a numerical simulation example under the two conditions of large maneuvering and snake maneuvering of the target, both of which achieve effective interception of the target. Therefore, the designed combined guidance law is effective for intercepting hypersonic large maneuvering targets.

关键词： Angular velocity Geometry Acceleration Mathematical model Aircraft navigation Technological innovation Trajectory

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Dipole Antenna Arrays with Inherently High Port Isolation Levels

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IEEE Antennas and Wireless Propagation Letters 2025年

作者： Chen, Zhiyuan Lu, Dacheng Tang, Ming-Chun Hu, Kun-Zhi Li, Dajiang Liu, Heng Yi, Da Chongqing University of Posts and Telecommunications Key Laboratory of Industrial Internet of Things and Networked Control College of Automation Chongqing400065 China Chongqing University of Posts and Telecommunications Institute of Industrial Internet Chongqing China Chongqing University Key Laboratory of Dependable Service Computing in Cyber Physical Society Ministry of Education School of Microelectronics and Communication Engineering Chongqing400044 China

In this letter, the dipole antenna arrays with self-decoupling characteristics are developed. In comparison with the traditional electric dipole antennas, the developed dipole antenna can be considered as comprising an electric dipole and two magnetic dipoles while maintaining a relatively simple structural design. The multi-coupling cancellation between adjacent antenna elements was achieved to achieve high port isolation levels. To validate the effectiveness of the developed self-decoupling method, a 1×2 antenna array is simulated, fabricated, and measured. The results demonstrated port isolation level exceeds 25 dB over the entire operational bandwidth of 3.3-3.8 GHz, and a maximum isolation level of ⁓63 dB was achieved. Furthermore, a 1×6 antenna array is simulated to validate the extensibility of the developed self-decoupling method, where the isolation levels between all ports exceeds 25 dB across the entire operational bandwidth of 3.3-3.8 GHz. © 2002-2011 IEEE.

关键词： Structural dynamics

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Preface

Lecture Notes in Networks and Systems

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Lecture Notes in Networks and Systems 2023年 730 LNNS卷 v-vi页

作者： Noor, Arti Saroha, Kriti Pricop, Emil Trivedi, Gaurav Sen, Abhijit Uttar Pradesh Noida India Department of Automatic Control Computers and Electronics Petroleum-Gas University of Ploiesti Ploiesti Romania Department of Electronics and Electrical Engineering Indian Institute of Technology Guwahati Guwahati India Department of Computing Science and Information Technology Kwantlen Polytechnic University SurreyBC Canada

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Bebop 2 Quadrotor as a Platform for Research and Education in Robotics and control engineering

Bebop 2 Quadrotor as a Platform for Research and Education i...

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International Conference on Unmanned Aircraft Systems (ICUAS)

作者： Wojciech Giernacki Piotr Kozierski Jacek Michalski Marek Retinger Rafal Madonski Pascual Campoy Institute of Robotics and Machine Intelligence Faculty of Control Robotics and Electrical Engineering of Poznan University of Technology Poznań Poland Institute of Computing Science (Faculty of Computing and Telecommunications) and with the Institute of Robotics and Machine Intelligence (Faculty of Control Robotics and Electrical Engineering) Poznan University of Technology Poznań Poland International Energy College Energy Electricity Research Center Jinan University Zhuhai China Computer Vision and Aerial Robotics (CVAR) Centre for Automation and Robotics Technical University of Madrid (UPM) Madrid Spain

ISBN: (数字)9781728142784

ISBN: (纸本)9781728142791

In conducting research and teaching in fields related to unmanned aerial vehicles (UAVs), it is particularly important to select a universal, safe, open research platform and tools for rapid prototyping. Ready-to-use, low-cost micro-class UAVs such as Bebop 2 are successfully used in that regard. This article presents how to use the potential of this flying robot with Robot Operating System (ROS). The most important software solutions for the developed experimental testbed FlyBebop are characterized here. Their capabilities in research and education are exemplified using three distinct cases: 1) research results on the method of optimal, in-flight, iterative self-tuning of UAV position controller parameters (based only on current measurements), 2) the use of the reinforcement learning method in the autonomous landing of a single drone on a moving vehicle, 3) planning the movement of UAVs for autonomous video recording along the planned path in the arrangement: "cameraman drone" and "lighting technician drones".

关键词： Drones Robots Education Cameras Sensors Tools

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Electrical and Mechanical Sensor-Based Mass Flow Rate Measurement System: A Comparative Approach

Electrical and Mechanical Sensor-Based Mass Flow Rate Measur...

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International Conference on Robotics and Automation Sciences (ICRAS)

作者： Usama Abrar Liu Shi Nasif Raza Jaffri Michael Short Khawar Hasham School of Control and Computer Engineering North China Electric Power University Beijing 102206 China School of Computing Engineering and Digital Technologies Teesside University Middlesbrough Cleveland TS1 3BA UK Interactive Group Islamabad Pakistan

ISBN: (数字)9781728198576

ISBN: (纸本)9781728198583

Gas-Solid flow finds its application in various industries such as chemical and food processes, pharmaceuticals, automobile and power generation. The precise measurement and real-time monitoring of the flow process have garnered a lot of attraction in the modern industrial era. The effective utilization, with high efficiency, of the resources have compelled the researchers to investigate Gas-Solid flow monitoring and measurement process for the last two decades. Efforts are extended to design instruments for flow pattern visualization and quantification of mass flow rate. Generally, volumetric flow concentration and velocity profile of the solid particles are required to find the mass flow rate (MRF) in the case of non-invasive measurement techniques. This paper proposes a novel non-invasive mass flow rate measurement system for solid particles where electrical and mechanical sensors are simultaneously used to compensate each other's associated drawbacks. The solid particles are allowed to slide along an insulated inclined channel under the effect of gravity. The velocity profile and volumetric flow concentration are calculated using electrical sensors. Furthermore, load cell serves as a second sensor to calculate the mass flow rate. The experimental results from both the sensors are compared to investigate the accuracy and relative errors of both the sensors under different conditions.

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Mobile robot navigation for complete coverage of an environment

Mobile robot navigation for complete coverage of an environm...

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作者： Šelek, Ana Seder, Marija Petrović, Ivan Department of Control and Computer Engineering Faculty of Electrical Engineering and Computing University of Zagreb Croatia

Inspired by the Spanning Tree Covering (STC) algorithm of Gabriely and Rimon, a novel algorithm of complete coverage for known environments is developed. Unlike the original STC algorithm, we detect dynamic elements of the environment and efficiently update the solution when changes are observed. The contribution is a path replanning algorithm that reduces overlapping when the part of the environment is changed. Experiments show that the proposed algorithm is capable of planning complete coverage robot paths with 70.27% coverage and without overlapping. © 2018

关键词： Mobile robots

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Cerebrovascular Segmentation in MRA via Reverse Edge Attention Network 23rd

Cerebrovascular Segmentation in MRA via Reverse Edge Attenti...

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23rd International Conference on Medical Image computing and Computer-Assisted Intervention, MICCAI 2020

作者： Zhang, Hao Xia, Likun Song, Ran Yang, Jianlong Hao, Huaying Liu, Jiang Zhao, Yitian College of Information Engineering Capital Normal University Beijing China Cixi Institute of Biomedical Engineering Ningbo Institute of Industrial Technology Chinese Academy of Sciences Ningbo China School of Control Science and Engineering Shandong University Jinan China Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen China International Science and Technology Cooperation Base of Electronic System Reliability and Mathematical Interdisciplinary Capital Normal University Beijing China Laboratory of Neural Computing and Intelligent Perception Capital Normal University Beijing China Beijing Advanced Innovation Center for Imaging Theory and Technology Capital Normal University Beijing China

ISBN: (纸本)9783030597245

Automated extraction of cerebrovascular is of great importance in understanding the mechanism, diagnosis, and treatment of many cerebrovascular pathologies. However, segmentation of cerebrovascular networks from magnetic resonance angiography (MRA) imagery continues to be challenging because of relatively poor contrast and inhomogeneous backgrounds, and the anatomical variations, complex geometry and topology of the networks themselves. In this paper, we present a novel cerebrovascular segmentation framework that consists of image enhancement and segmentation phases. We aim to remove redundant features, while retaining edge information in shallow features when combining these with deep features. We first employ a Retinex model, which is able to model noise explicitly to aid removal of imaging noise, as well as reducing redundancy within an image and emphasizing the vessel regions, thereby simplifying the subsequent segmentation problem. Subsequently, a reverse edge attention module is employed to discover edge information by paying particular attention to the regions that are not salient in high-level semantic features. The experimental results show that the proposed framework enables the reverse edge attention network to deliver a reliable cerebrovascular segmentation. © 2020, Springer Nature Switzerland AG.

关键词： Image enhancement

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Data-Driven Modeling and Random Search Optimization Method for the Polysilicon Cvd Reactor

SSRN

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SSRN 2022年

作者： Xi, Bangwen Xiong, Gang Shen, Zhen Tamir, Tariku Sinshaw He, Chang Song, Yonggang Liu, Xiong State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100190 China School of Artificial Intelligence University of Chinese Academy of Sciences Beijing100049 China Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Chinese Academy of Sciences Beijing100190 China Guangdong Engineering Research Center of 3D Printing and Intelligent Manufacturing Cloud Computing Center Chinese Academy of Sciences Dongguan523808 China Intelligent Manufacturing Center Qingdao Academy of Intelligent Industries Qingdao266109 China Xinte Energy Co. Ltd Urumqi830000 China

Polysilicon is mainly obtained by chemical vapor deposition(CVD) reaction, in which hydrogen gas and trichlorosilane(TCS) are fed into the CVD reactor to produce polysilicon. However, the feeding parameters are mainly adjusted in a step-by-step manner according to the actual deposition results, which is inefficient to optimize and prone to resource wastage. In this paper, based on the existing mechanistic model of the CVD reactor, we combine the history data with the specific parameters to construct a simulator. A random search algorithm is used to determine the optimal feeding parameters. With the simulator, the polysilicon productivity can be increased by 704 kg, and the power consumption reduced by 3.8 kWh/kg. © 2022, The Authors. All rights reserved.

关键词： Simulators

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An Interpretability Analysis of Travel Decision Learning in Cyber-Physical-Social-Systems

An Interpretability Analysis of Travel Decision Learning in ...

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Digital Twins and Parallel Intelligence (DTPI), IEEE International Conference on

作者： Miao Guo Peijun Ye Xudong Liu Sheng Liu Gang Xiong Liguo Zhang The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Faculty of Information and Technology Beijing University of Technology Beijing China The Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Chinese Academy of Sciences Beijing China The Guangdong Engineering Research Center of 3D Printing and Intelligent Manufacturing The Cloud Computing Center Chinese Academy of Sciences Beijing China

In the few decades, the rise of Internet and social media has fundamentally changed the management, control, and operation modes of modern engineering and social systems like defense, energy, critical health care and ... 详细信息

关键词： Deep learning Social networking (online) Scalability Perturbation methods Neurons Transportation Transforms

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