检索结果-内蒙古大学图书馆

2nd International Conference on Frontiers of Electrical Power and Energy Systems, EPES 2022

作者： Zhang, Ying Peng, Di Wang, Shihui Tao, Yizhu Hu, Yufei Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China China Academy of Launch Vehicle Technology Beijing100076 China Yuying School Beijing100018 China

This paper studies the analysis of aircraft system which has the development for multi-mode architecture, as well as the application of multi-mode control, multi-mode monitoring and multi-mode fast parallel management. Through the research and analysis of multi-mode architecture, multi-mode control algorithm, multi-mode health monitoring algorithm and multi-mode rapid parallel test. GigaDevice's MCU (GD32F450) is used using an MCU, and the FPGA is two Chip Anlu's AL3A10BGA256, FLASH uses GigaDevice's GD25Q64CSIG to simulate the aircraft development system. The effectiveness of a multi-mode control management method developed for aircraft was developed. This method changes the single-mode management and disposal scheme of traditional aircraft, and adopts the mode control management of real-time detection. It effectively saves system resource consumption and expenditure in aircraft development. © Published under licence by IOP Publishing Ltd.

关键词： Aircraft detection

来源：评论

学校读者我要写书评

暂无评论

A review of space-object collision probability computation methods

引用

Astrodynamics 2022年第2期6卷 95-120页

作者： Jia-Sheng Li Zhen Yang Ya-Zhong Luo College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions Changsha 410073China

The collision probability computation of space objects plays an important role in space situational awareness,particularly for conjunction assessment and collision *** works mainly relied on Monte Carlo simulations to predict collision *** such simulations are accurate when a large number of samples are used,these methods are perceived as computationally intensive,which limits their application in *** overcome this limitation,many approximation methods have been developed over the past three *** paper presents a comprehensive review of existing space-object collision probability computation *** advantages and limitations of different methods are analyzed and a systematic comparison is *** regarding how to select a suitable method for different short-term encounter scenarios is then ***,potential future research avenues are discussed.

关键词： collision probability space situational awareness collision avoidance astrodynamics

来源：评论

学校读者我要写书评

暂无评论

Online Prediction Product control based on Information-aware Weight and Error Compensation 3

Online Prediction Product Control based on Information-aware...

引用

3rd International Conference on Computing, Communication, Perception and Quantum technology, CCPQT 2024

作者： Gao, Jie Wang, Jing Zhang, Ying Quality Manage Department Beijing Aerospace Automatic Control Institute Beijing China Projects Executive Office Equipment Integrated Logistics Support Center China Academy of Launch Vehicle Beijing China National Key Laboratory of Science and Technology on Aerospace Intelligent Beijing Aerospace Automatic Control Institute Peking University Beijing China

ISBN: (纸本)9798331528386

This paper applies the information-aware weight method to the field of engineering where the validity of the data characteristics of the prediction object fluctuates or changes rapidly within a limited range. It clarifies the relationship between point similarity and regional similarity, so that the online prediction algorithm has a more acute data characteristic perception ability in the process of responding to data characteristic changes, and can control the life and performance of the product in real time. The error compensation algorithm is based on the relevant theory of the prediction ability solidification after the prediction model training and the use of prior error to approximate the posterior error in the prediction process of the online extreme learning machine derivative algorithm. By establishing a mapping relationship between the input data and the prediction error of the IPW-OSELM algorithm, an error compensation algorithm is formed. Starting from the cost function theory, the IPW-OSELM algorithm effectively integrates multiple parameters such as forgetting factor, regularization parameter and information-aware weight, which improves the overall performance of the WE-OSELM algorithm online prediction and can effectively manage large systems. © 2024 IEEE.

关键词： Prediction models

来源：评论

学校读者我要写书评

暂无评论

APF-Based control for On-Orbit Swarm Guard Against Multiple Threat Targets 7th

APF-Based Control for On-Orbit Swarm Guard Against Multiple ...

引用

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

作者： Wang, Hanwei Zhang, Jiacheng Zhu, Yuehe Luo, Yazhong Jin, Ke Zhang, Yu Fu, Lifeng College of Aerospace Science and Engineering National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions Changsha410073 China

ISBN: (纸本)9789819733279

With the number of satellites and space debris growing fast, it is significant to develop a swarm-to-swarm defense method to protect the on-orbit high value spacecraft. In order to solve the difficulties of swarm assignment combinations, unpredictable threat target maneuvers, non-Euclidean dynamics, and real-time control requirements, a novel method mainly based on Hungarian algorithm and artificial potential fields is proposed. The method involves rapidly searching the one-to-one mission assignment scheme and generating control laws of defenders in real time. Both a positive and a conservative defend strategy are proposed. Case studies show that the computation time of the instantaneous target assignment and control scheme is 0.08 ms. When defenders are not less than threat targets and their maneuverability are the same, the interception number is 100%. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Space debris

来源：评论

学校读者我要写书评

暂无评论

Mixed-integer Planning of Spacecraft Accompanying Flying Trajectory with Full-duration Illumination Angle Constraints

引用

Yuhang Xuebao/Journal of Astronautics 2025年第2期46卷 334-345页

作者： Fang, Xuankun Wang, Hua Lu, Lin Huo, Chengyi He, Junhua College of Aerospace Science and Engineering National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions Changsha410073 China

To address the unique requirements of close-range high-definition optical observation missions for space targets，an impulsive maneuver planning method is developed，which accounts for sunlight angle constraints throughout the entire accompanying flight process. Initially，the variation patterns of the angle β are analyzed，and a simplified model for the motion of the sun vector is established within the target orbital coordinate system. Subsequently，the relative orbit of the accompanying spacecraft is designed using impulsive control. The nominal sunlight angle constraint is incorporated，considering the impact of orbital perturbations，and a mixed-integer planning model for the relative orbit of the accompanying spacecraft is formulated based on the CW equations. Next，the differential evolution algorithm is employed to determine the impulsive control strategy for the accompanying flight that minimizes fuel consumption，providing a reference maneuver scheme for mission execution. Numerical simulation results demonstrate that the adopted maneuver planning method can derive a maneuver control scheme that meets the required sunlight angle for the entire process with optimal fuel consumption，confirming the method’s effectiveness and accuracy. Lastly，through extensive simulation calculations，the relationship between the total velocity increment and its related influence parameters during the entire accompanying flight process is analyzed. © 2025 Chinese Society of Astronautics. All rights reserved.

关键词： Integer programming

来源：评论

学校读者我要写书评

暂无评论

Fluid-structure interaction simulation for multi-body flexible morphing structures

引用

Chinese Journal of Aeronautics 2024年第2期37卷 137-147页

作者： Wenzhi GUO Yongtao SHUI Lu NIE Gang CHEN State Key Laboratory of Strength and Vibration for Mechanic Structures School of Aerospace EngineeringXi’an Jiaotong UniversityXi’an 710049China China Academy of Launch Vehicle Technology Beijing 100076China China Academy of Aerospace Science and Innovation Beijing 100086China Shannxi Key Laboratory of Service Environment and Control for Flight Vehicles Xi’an Jiaotong UniversityXi’an 710049China

The multi-body flexible morphing airfoil can improve the aerodynamic characteristics based on different flight missions *** researches have focused on the unsteady aerodynamic characteristics of flexible wings under passive ***,the unsteady aerodynamic characteristics with the fluid-structure interaction effects in the multi-body active actuation process of morphing airfoil deserve further *** this paper,a fluid-structure coupled simulation method for multi-body flexible morphing airfoil with active actuation subsystem was investigated,and the aerodynamic characteristics during deformation were compared with different skin flexibility,flow field environment,actuation mode and actuation *** numerical results show that for the steady aerodynamic,the skin flexibility can improve the stability *** the unsteady process,the change trend of the transient lift coefficient and pitching moment are consistent with those of the active drive characteristics,while the instantaneous lift-drag ratio coefficient is greatly affected by the driving mode and can be improved by increasing the driving duration.

关键词： Fluid-structure interaction Multi-body dynamics modeling Flexible structures Aerodynamics Morphing wings

来源：评论

学校读者我要写书评

暂无评论

Multi-mode High-precision Fault Diagnosis control System Manage Method 3

Multi-mode High-precision Fault Diagnosis Control System Man...

引用

3rd International Conference on Computing, Communication, Perception and Quantum technology, CCPQT 2024

作者： Wen, Yudi Wang, Jing Zhang, Ying Quality Manage Department Beijing Aerospace Automatic Control Institute Beijing China Projects Executive Office Equipment Integrated Logistics Support Center China Academy of Launch Vehicle Beijing China National Key Laboratory of Science and Technology on Aerospace Intelligent Beijing Aerospace Automatic Control Institute Peking University Beijing China

ISBN: (纸本)9798331528386

The high-precision fault diagnosis management method in multi-mode control systems was studied. Three typical power conversion circuits were selected to use full convolutional network (FCN), residual network (RESNET) and self-attention network (TRANSFORMER) for fault diagnosis algorithm research, and a fault diagnosis management method verification platform was built based on this. The algorithm model was built using Python in the Pytorch environment on a computer with 16GB RAM and a 3060 graphics card. The switching power supply circuit based on Tps53355 was analyzed by Pspice sensitivity, and 6 devices with the greatest impact on the output were obtained. The Adam optimizer was used, the total number of epochs trained was 60, and the mini-batch size was fixed to 64. The simulation verification showed that this model can achieve the system engineering management requirements: the fault detection accuracy is not less than 91%, the false alarm rate of lightweight power warning is not higher than 1.05%, and under multiple faults, no less than 3 composite faults can be identified. © 2024 IEEE.

关键词： Power supply circuits

来源：评论

学校读者我要写书评

暂无评论

Protecting Multiple Types of Privacy Simultaneously in EEG-Based Brain-Computer Interfaces

Protecting Multiple Types of Privacy Simultaneously in EEG-B...

引用

2024 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2024

作者： Meng, Lubin Jiang, Xue Jia, Tianwang Wu, Dongrui School of Artificial Intelligence and Automation Huazhong University of Science and Technology Key Laboratory of Image Processing and Intelligent Control Wuhan China

ISBN: (纸本)9781665410205

A brain-computer interface (BCI) enables direct communication between the brain and an external device. Electroencephalogram (EEG) is the preferred input signal in non-invasive BCIs, due to its convenience and low cost. EEG-based BCIs have been successfully used in many applications, such as neurological rehabilitation, text input, games, and so on. However, EEG signals inherently carry rich personal information, necessitating privacy protection. This paper demonstrates that multiple types of private information (user identity, gender, and BCI-experience) can be easily inferred from EEG data, imposing a serious privacy threat to BCIs, To address this issue, we design perturbations to convert the original EEG data into privacy-protected EEG data, which conceal the private information while maintaining the primary BCI task performance. Experimental results demonstrated that the privacy-protected EEG data can significantly reduce the classification accuracy of user identity, gender and BCI-experience, but almost do not affect at all the classification accuracy of the primary BCI task, enabling user privacy protection in EEG-based BCIs. © 2024 IEEE.

关键词： Differential privacy

来源：评论

学校读者我要写书评

暂无评论

A Task Allocation Algorithm of Loitering Munition Group for Regional Blockade Based on Event-Driven 1

引用

3rd International Conference on Autonomous Unmanned Systems, ICAUS 2023

作者： Zhu, Yunchong Li, Kebo Liu, Yuanhe Liang, Yan’gang College of Aerospace Science and Engineering National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Mission Changsha410073 China

ISBN: (数字)9789819710874

ISBN: (纸本)9789819710867

Propose an event-driven online task allocation algorithm to solve the problem of online task allocation for the Loitering Munition Group, which has no information about any targets in operational area. Firstly, analyzing the properties of enemy and friendly equipment in typical regional blockade operations and designing the process of unknown regional blockade operations. Secondly, propose the concept of "benefit-cost ratio" to drive the dynamic scrolling of the task allocation window, and achieve a fast response to sudden events such as new target appearance or projectile damage execution, and timely adjust the task allocation plan. Then, construct a simulation system for the Loitering Munition Group's regional blockade operation, conduct Monte Carlo simulation to verify the effectiveness and reliability of the online task allocation method. © Beijing HIWING Scientific and Technological Information Institute 2024.

关键词： Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

PSMFNet:Lightweight Partial Separation and Multiscale Fusion Network for Image Super-Resolution

引用

Computers, Materials & Continua 2024年第10期81卷 1491-1509页

作者： Shuai Cao Jianan Liang Yongjun Cao Jinglun Huang Zhishu Yang Institute of Intelligent Manufacturing GDASGuangdong Key Laboratory of Modern Control TechnologyGuangzhou510030China School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou511442China Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China School of Faculty of Intelligent Manufacturing Wuyi UniversityJiangmen529020China

The employment of deep convolutional neural networks has recently contributed to significant progress in single image super-resolution(SISR)***,the high computational demands of most SR techniques hinder their applicability to edge devices,despite their satisfactory reconstruction *** methods commonly use standard convolutions,which increase the convolutional operation cost of the *** this paper,a lightweight Partial Separation and Multiscale Fusion Network(PSMFNet)is proposed to alleviate this ***,this paper introduces partial convolution(PConv),which reduces the redundant convolution operations throughout the model by separating some of the features of an image while retaining features useful for image ***,it is worth noting that the existing methods have not fully utilized the rich feature information,leading to information loss,which reduces the ability to learn feature *** by self-attention,this paper develops a multiscale feature fusion block(MFFB),which can better utilize the non-local features of an *** can learn long-range dependencies from the spatial dimension and extract features from the channel dimension,thereby obtaining more comprehensive and rich feature *** the role of the MFFB is to capture rich global features,this paper further introduces an efficient inverted residual block(EIRB)to supplement the local feature extraction ability of PSMFNet.A comprehensive analysis of the experimental results shows that PSMFNet maintains a better performance with fewer parameters than the state-of-the-art models.

关键词： Deep learning single image super-resolution lightweight network multiscale fusion

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：