检索结果-内蒙古大学图书馆

control, Electronics and Computer technology (ICCECT), IEEE International Conference on

作者： Zehu Wang Guanglin He Yukuan Liu Science and Technology on Electromechanical Dynamic Control Laboratory Beijing Institute of Technology Beijing China

Based on the background of cooperative detection of target by multiple UAVs, this paper proposes an efficient multi-sensor data fusion algorithm, which is called the overall weighted fusion algorithm based on dynamic optimal estimation (abbreviated as DOE-OWFA) Based on the weighted fusion by the least squares method, the algorithm makes full use of the state estimation property of Kalman Alter for data processing and state estimation. In order to evaluate the performance of the algorithm, we conducted simulation tests with the help of MATLAB. The simulation results show that the algorithm proposed in this paper has higher fusion accuracy and better robustness compared with the same type of algorithms.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Consensus Positive Position Feedback Robust control for Vibration Reduction Under Fault Tolerance

Consensus Positive Position Feedback Robust Control for Vibr...

引用

Artificial Intelligence and Automation control (AIAC), International Conference on

作者： Dalong Tian Dong Xue Yuwei Li Hang Shen Jiamin Xue Han Du Xi'an Institute of Electromechanical Information Technology Xi'an China Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an China

ISBN: (数字)9798331529147

ISBN: (纸本)9798331529154

In this study, active vibration robust control based on the mutual collaboration of agents under fault tolerance for large flexible smart truss structures (LFSTS) is investigated. First, the electromechanical coupling dynamic equation of the active truss is analyzed based on the finite element method. Subsequently, the positive position feedback (PPF) and consensus positive position feedback (CPPF) algorithms are compared, analyzing the reduction of the vibration relying on the optimal PZT stack actuator's position when agents collaborate in the designed communication topology network. Finally, simulations considering agent failure are performed to verify the fault tolerance and robustness of the active vibration control system. Compared with free vibration and PPF method, the results show that CPPF exhibits robust performance in rapidly suppressing the vibration of the LFSTS, which considerably enhances system reliability and improves pointing accuracy.

关键词： Vibrations Robust control Fault tolerance Network topology Fault tolerant systems control systems Vibration control Robustness Topology Steady-state

来源：评论

学校读者我要写书评

暂无评论

Strength Calculation and Simulation Study of Threaded Connection of Penetration Fuze

Strength Calculation and Simulation Study of Threaded Connec...

引用

Artificial Intelligence, Networking and Information technology (AINIT), International Seminar on

作者： Pengzhao Xu Guangsong Ma Sen Wang Shaokang Cui Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an China Xi'an Institute of Electromechanical Information Technology Xi'an China

ISBN: (数字)9798350385557

ISBN: (纸本)9798350385564

Aiming at the problem of whether the connection strength of the thread of the penetration fuze is sufficient the operating requirements under the impact load of penetrating multi-layer target plate. Using theoretical calculation and numerical simulation methods, under three different excitation conditions (axial, axial + radial (0.3 times axial), axial + radial (0.6 times axial)) under the impact load of the multi-layer target plate, the shear strength of the thread connecting the screw and the fuze shell and the extrusion strength of the thread tooth surface were studied. The results show that the design margins under the three excitation conditions are 0.9, 0.6 and 0.1, respectively, and all have certain design margins, indicating that the connection thread of the fuze meets the strength requirements when subjected to the impact load of the penetrating multilayer target plate.

关键词： Seminars Simulation Loading Fasteners Numerical simulation Nonhomogeneous media Synchronization

来源：评论

学校读者我要写书评

暂无评论

Research on a fuze anti-jamming strategy under the background of complex ground objects 13

Research on a fuze anti-jamming strategy under the backgroun...

引用

13th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2021

作者： Xia, Lei Dai, Liang Zou, Jin-Long Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an710065 China

ISBN: (纸本)9781665418126

Aiming at the problem of the reduced reliability of the radio proximity fuze under the jamming of complex ground objects,a method of fixed height for laser and radio combined detection is proposed. Using the method of dual-beam separate airspace detection and information fusion,a mathematical model of the fuze's fixed height initiation is established. Through the analysis of the dynamic ground detection model and the ground objects jamming detection model, this design idea and mathematical model against the ground objects jamming effectiveness are confirmed. © 2021 IEEE.

关键词： Object detection

来源：评论

学校读者我要写书评

暂无评论

V-band antipolar fin line microstrip waveguide conversion structure 13

V-band antipolar fin line microstrip waveguide conversion st...

引用

13th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2021

作者： Chen, Wei Wen, Rui-Hu Zheng, Xiao-Yan Liu, Shui-Ying Niu, Lan-Jie Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an710065 China

ISBN: (纸本)9781665418126

The V-band microstrip waveguide conversion structure cannot meet the requirements of simple installation and integrated design. The fin line structure with specific size and shape is etched on the surface of the film. By adjusting the parameters of the opposite pole fin line, the conversion structure can meet the requirements of practical performance. The test results show that the center frequency of antipolar fin line microstrip waveguide conversion structure is 71.6GHz, the internal reflection parameter S11 is less than -20dB in the bandwidth of 67.3-77.0GHz and 10GHz, and the conversion structure size is 6.56mm*1.47mm*0.127mm. The conversion structure is installed in the middle of the V-band waveguide along the E-plane of the waveguide, without slotting the waveguide wall, which meets the requirements of superior performance, simple installation and integrated design. © 2021 IEEE.

关键词： Fins (heat exchange)

来源：评论

学校读者我要写书评

暂无评论

MAPPING-BASED DRIFT FAULT REPAIR METHOD FOR ARRAY INERTIAL DEVICES 9

MAPPING-BASED DRIFT FAULT REPAIR METHOD FOR ARRAY INERTIAL D...

引用

9th International Symposium on Test Automation and Instrumentation, ISTAI 2022

作者： Chen, Hao Su, Zhong Xu, Zhan Li, Qing Beijing Key Laboratory of High Dynamic Navigation Technology Beijing Information Science & Technology University Beijing China Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing Information Science & Technology University Beijing China

ISBN: (纸本)9781839538391

The array inertial device can significantly improve the positioning accuracy of the wearable autonomous positioning system, but it is difficult to avoid faults in the working process of the array inertial device, even if the fault is detected, the positioning system will fail. Aiming at the fault that the acceleration drift of array inertial device increases in the process of motion in the wearable autonomous positioning system of emergency rescue personnel, a fault repair method of acceleration array based on BP neural network was proposed. Through data fusion of accelerometer and gyroscope, a fault repair method based on mapping contrast elimination is implemented. The experimental results of twelve IMU array data fusion and fault repair show that the proposed method can be used to repair the typical faults with the increase of accelerometer drift in the array inertial device. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Repair

来源：评论

学校读者我要写书评

暂无评论

Tunable Chirality and Helicity of Bessel Twisted Beams Near the Dirac Points in Topological Metacrystal

Tunable Chirality and Helicity of Bessel Twisted Beams Near ...

引用

International Symposium on Antennas, Propagation and EM Theory (ISAPE)

作者： Yuanfei Hui Zhiwei Cui Sihan Zhao Tie Li Gang Li Haijun He Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an China School of Physics Xidian University Xi'an China

ISBN: (数字)9798350353129

ISBN: (纸本)9798350353136

In this work, we undertake an approach to describe the tunable optical chirality and helicity of twisted beam near the Dirac point in topological meta-crystals. An improved method based on the full vector wave analysis is introduced to investigate the chirality and helicity of Bessel twisted beams near the Dirac point in the interface of topological meta-crystals. It is showed that the giant non-specular effects of chirality and helicity are discovered when a Bessel twisted Beam reflects in the vicinity of a Dirac point, which is sensitive to the incident frequency, angle, and electromagnetic properties of the topological meta-crystal. We can attribute the giant non-specular effect of chirality and helicity to the degeneracy between critical angle and Brewster angle caused by the Dirac point. The results will be of significant interest of study the measurement of Dirac point, and inspire a perspective for manipulating twisted beams with Dirac point.

关键词： Analytical models Antenna theory Beams Vectors Metamaterials Optical sensors Optical reflection Electromagnetic fields Electromagnetics Photonics

来源：评论

学校读者我要写书评

暂无评论

A hierarchical simulation framework incorporating full-link physical response for short-range infrared detection

引用

Defence technology 2025年

作者： Gao, Mingze Xu, Lixin Hu, Shiyuan Shi, Xiaolong Gao, Jiaming Wu, Yanjiang Chen, Huimin Science and Technology on Electromechanical Dynamic Control Laboratory Beijing Institute of Technology Beijing100081 China Tianjin Institute of Aerospace Mechanical and Electrical Equipment Tianjin300301 China

Missile-borne short-range infrared detection (SIRD) technology is commonly used in military ground target detection. In complex battlefield environments, achieving precise strike on ground target is a challenging task. However, real battlefield data is limited, and equivalent experiments are costly. Currently, there is a lack of comprehensive physical modeling and numerical simulation methods for SIRD. To this end, this study proposes a SIRD simulation framework incorporating full-link physical response, which is integrated through the radiative transfer layer, the sensor response layer, and the model-driven layer. In the radiative transfer layer, a coupled dynamic detection model is established to describe the external optical channel response of the SIRD system by combining the infrared radiation model and the geometric measurement model. In the sensor response layer, considering photoelectric conversion and signal processing, the internal signal response model of the SIRD system is established by a hybrid mode of parametric modeling and analog circuit analysis. In the model-driven layer, a co-simulation application based on a three-dimensional virtual environment is proposed to drive the full-link physical model, and a parallel ray tracing method is employed for real-time synchronous simulation. The proposed simulation framework can provide pixel-level signal output and is verified by the measured data. The evaluation results of the root mean square error (RMSE) and the Pearson correlation coefficient (PCC) show that the simulated data and the measured data achieve good consistency, and the evaluation results of the waveform eigenvalues indicate that the simulated signals exhibit low errors compared to the measured signals. The proposed simulation framework has the potential to acquire large sample datasets of SIRD under various complex battlefield environments and can provide an effective data source for SIRD application research. © 2025 China Ordnance Society

关键词： Radiative transfer

来源：评论

学校读者我要写书评

暂无评论

Dual-Band Flexible Terahertz Sensor Based on Rotated Metamaterial Structure

Dual-Band Flexible Terahertz Sensor Based on Rotated Metamat...

引用

2023 IEEE MTT-S International Wireless Symposium, IWS 2023

作者： Wang, Dongxu Xu, Kai-Da School of Information and Communications Engineering Xi'an Jiaotong University Xi'an China Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an China East China Normal University State Key Laboratory of Precision Spectroscopy Shanghai200241 China

ISBN: (纸本)9798350336535

In this article, a terahertz flexible metamaterial sensor with dual-band operating characteristics is introduced. The gold metamaterial array is arranged on the top surface of a polyimide film, while the structure is made up of a rotated structure with spiral-shaped strips. Two resonances occur at 0.37 and 1.13 THz with outstanding polarization insensitivity. The metamaterial sensor also has sensitive refractive index sensing properties, with sensitivities of 0.1 THz/RIU and 0.3 THz/RIU, respectively, at the two operating bands. This work shows potential applications in refractive index and nesticide sensing. © 2023 IEEE.

关键词： Metamaterials

来源：评论

学校读者我要写书评

暂无评论

A Research on Bank Card Number Recognition Based on ASFF+YOLOv7 and Multi-Scale Feature Line Fusion 13

A Research on Bank Card Number Recognition Based on ASFF+YOL...

引用

13th IEEE International Conference on CYBER technology in Automation, control, and Intelligent Systems, CYBER 2023

作者： Cheng, Jiajun Wu, Yaoyan Gao, Weitao Fu, Jun Northeastern University Faculty of Robot Science and Engineering Liaoning Shenyang China School of Electrical and Control Engineering State Key Laboratory of Dynamic Testing Technology North University of China Shanxi Taiyuan China

ISBN: (纸本)9798350315196

Electronic payments have become the primary mode of payment today, and bank card recognition is widely used in industries such as mobile, mobile banking, and third-party payments. To address issues such as low fault tolerance due to factors such as complex backgrounds, significant perspective distortion that is difficult to recover, and high illumination variation, we propose a Bank Card Number Recognition algorithm based on ASFF + YOLOv7 and Multi-Scale Feature Line Fusion. The algorithm comprises two parts: the front-end dataset generation stage introduces an efficient semi-automatic traditional bank card dataset generation algorithm, which reduces the manual annotation cost while ensuring relative accuracy and significantly improves work efficiency. In the back-end recognition stage, we have improved the traditional deep learning model for the long-tail digit string dataset, achieving a precision of 99.19% and a recall rate of 98.65%. © 2023 IEEE.

关键词： Fault tolerance

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：