检索结果-内蒙古大学图书馆

Efficient Path-Following for Urban Logistics: A Fuzzy control Strategy for Consumer UAVs under Disturbance Constraints

引用

IEEE Transactions on Consumer Electronics 2025年

作者： Shao, Xingling Du, Jun Xia, Yi Zhang, Zekai Hou, Xiangwang Debbah, Merouane North University of China School of Electrical and Control Engineering Taiyuan030051 China State Key Laboratory of Extreme Environment Optoelecronic Dynamic Measurement Technology and Instrument Taiyuan030051 China Tsinghua University Department of Electronic Engineering Beijing100084 China Tsinghua University State Key laboratory of Space Network and Communications Beijing100084 China National University of Defense Technology College of Intelligence Science and Technology Hunan Changsha410073 China Tsinghua University Tsinghua Shenzhen International Graduate School Shenzhen518055 China Khalifa University of Science and Technology KU6G Research Center Abu Dhabi127788 United Arab Emirates

The adoption of consumer unmanned aerial vehicles (UAVs) for logistics transportation is a key aspect of the emerging low-altitude economy, yet it faces significant challenges. Urban environments introduce complex obstacles, including dense buildings and unpredictable wind disturbances, while existing control methods struggle to balance path-following accuracy, disturbance rejection, and communication efficiency. To meet these demands, this paper proposes a quantized fuzzy learning path-following control for consumer UAVs. Firstly, a hysteresis quantized fuzzy disturbance observer (HQFDO) is proposed where the disturbances are approximately estimated by a neural network. Notably, a hysteresis quantizer is employed to reduce the communication bandwidth occupation by discretizing disturbance observations. Subsequently, a distributed velocity controller and a heading angle controller are designed to tackle the geometric and dynamic tasks separately. Specifically, the velocity controller introduces a projective arc length error to mitigate inefficiencies and safety risks associated with frequent acceleration and deceleration switches. Compared to conventional techniques, the proposed approach improves transient performance, enhances path attractivity, and optimizes communication resource utilization. Theoretical stability analysis is provided, and simulations validate the effectiveness of the proposed control strategy. © 1975-2011 IEEE.

关键词： Target drones

来源：评论

学校读者我要写书评

暂无评论

Application of 3D Gaussian Splatting target Reconstruction in short-range detection 4

Application of 3D Gaussian Splatting target Reconstruction i...

引用

4th International Conference on Defence technology, ICDT 2024

作者： Lou, Wenzhong Li, Chenglong Feng, Hengzhen Ding, Nanxi Zhang, Zihao Ma, Wenlong Wang, Lin Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical Engineering Beijing Institute of Technology Beijing China

The research presented in this paper successfully introduces the emerging 3D reconstruction technology to specific application scenarios, especially for the strict requirements of information authenticity and timeliness for reconnaissance equipment and platforms. Traditional methods have the problems of slow speed and damaged reconstruction quality in processing reconnaissance information. In order to solve the problem of limited computing power of aerial detection platform and improve the reconstruction quality and efficiency of complex scenes, this paper introduces three-dimensional Gaussian Splatting (3DGS) method for testing. Experimental results show that 3DGS has excellent performance in rendering accuracy and real-time performance, which can effectively meet the performance requirements of aerial detection platforms. We tested it on a virtual dataset, and the experimental results show that it can also maintain excellent performance in the real world. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： 3D modeling

来源：评论

学校读者我要写书评

暂无评论

Short-Range Detection of Ferromagnetic Target Based on Tunneling Magnetoresistance Sensor

Short-Range Detection of Ferromagnetic Target Based on Tunne...

引用

2019 IEEE International Conference on Unmanned Systems, ICUS 2019

作者： Fan, Qiang Deng, Jiahao Duan, Zuodong Wei, Xiaowei Xu, Sha Beijing Institute of Technology Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical Engineering Beijing China

ISBN: (纸本)9781728137926

In order to improve the accuracy of short-range ferromagnetic target location and distance-determination, the short-range detection technology of ferromagnetic target based on tunneling magnetoresistance (TMR) sensor is studied in this paper. Based on the analysis of the tunneling magneto-resistance effect principle and the understanding of the relevant magnetic field detecting components, a suitable signal conditioning and signal processing circuit is designed to constitute the TMR magnetic detector. Two kinds of ferromagnetic targets with regular shapes are measured at different distances and orientations, and the measured data are analyzed by curve fitting method. The results show that the output signal amplitude value of the detector is inversely proportional to the cubic power of the relative distance between the detector and the measured target when it is in the near field (no more than 5 meters in this paper). And the influence of the measured target material and detection orientation on the relationship between the two also shows a certain correlation. On the basis of the short-range static detection of general ferromagnetic targets, dynamic tests were carried out with the aim of household cars, the results indicate that the detection distance of dynamic vehicles can reach 7 meters. © 2019 IEEE.

关键词： Ferromagnetic materials

来源：评论

学校读者我要写书评

暂无评论

Orthogonal simulation and experimental study on SLM process parameters for micro-sized high dynamic components 4

Orthogonal simulation and experimental study on SLM process ...

引用

4th International Conference on Defence technology, ICDT 2024

作者： Lv, Sining Lou, Wenzhong Feng, Hengzhen Xiao, Chuan Li, Shiyi Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical Engineering Beijing Institute of Technology Beijing China

Metal Additive Manufacturing (MAM) technology has become an important means of rapid prototyping of special high dynamic complex components. This study employs selective laser melting (SLM) as a technological approach for investigating micro-sized high dynamic components. The parameters that affect SLM process are analysed, mainly including laser power, laser speed, laser diameter, and scan spacing. Based on prior studies, feasible parameter ranges are identified, and an orthogonal experimental design table is established for simulation and experimental co-verification. Range and variance analysis are conducted and the influence ability of each influencing factor is explored from both simulation and experimental aspects. The SLM process model is established using finite element software, taking into account parameters such as residual stress and maximum deformation. The conclusion is drawn that the order of influence of each factor on the preparation of micro-sized high dynamic components is: scan spacing>laser power>laser diameter> laser speed. Samples of components are fabricated and subjected to static testing. The density of the components can reach over 99.15%, and the structural strength can reach 348 MPa, which meet the required standards and confirm the simulation analysis. The results demonstrates that SLM provides a novel manufacturing method for micro-sized high dynamic components. © 2024 Published under licence by IOP Publishing Ltd.

关键词： Selective laser melting

来源：评论

学校读者我要写书评

暂无评论

Adaptive Cancellation Method of Pseudo Code Phase Modulation Fuze Leakage Noise 6

Adaptive Cancellation Method of Pseudo Code Phase Modulation...

引用

6th IEEE Information technology and Mechatronics Engineering Conference, ITOEC 2022

作者： Wang, Qihai Xue, Chao Pan, Xi Beijing Institute of Technology Key Laboratory of Electromechanical Dynamic Control Beijing China

ISBN: (纸本)9781665431859

The leakage noise of the pseudo-code phase modulation fuze system is the noise interference caused by the insufficient isolation of the radio frequency part. Since the leakage signal is similar to the echo signal waveform, it will affect the output of the correlator and lead to misjudgment of the fuze. In this paper, the pseudo-code phase modulation fuze's emission leakage signal is modeled, and its characteristics are analyzed, and an adaptive noise cancellation method for the pseudo-code phase modulation leakage signal is proposed. The algorithm simulation shows that the noise filtering effect is good. Pseudo-code phase modulation fuze prototype is used to actually test the algorithm. The algorithm can increase the correlation peak value of the actual target signal and reduce the influence of leakage noise and natural noise floor. © 2022 IEEE.

关键词： Adaptive filters

来源：评论

学校读者我要写书评

暂无评论

High-Efficiency Graphene Photo Sensor Using a Transparent Electrode

引用

Chinese Physics Letters 2011年第10期28卷 192-194页

作者： LIU Tao HUANG Zheng National Key Laboratory for Electronic Measurement Technology and Key Laboratory of Instrumentation Science and Dynamic Measurement North University of ChinaTaiyuan 030051 Xi'an Institute of Electromechanical Information Technology Xi'an 710065

We report the first implementation of transparent electrodes in bottom-gate graphene transistors used for photo *** to conventional nontransparent electrodes,the transparent electrodes allow photons to transmit through to the graphene beneath,providing an enlarged absorption area and thereby giving rise to an enhancement of photocurrent *** devices are fabricated with an asymmetric metallization scheme and the experimental results show that the maximum photocurrent density using the transparent electrodes(ITO and Pd/ITO)is over two times higher than that using the nontransparent electrodes(Ti and Pd),indicating a significant enhancement in the performance of graphene photo sensors.

关键词： transparent thereby asymmetric

来源：评论

学校读者我要写书评

暂无评论

Backscattering characteristics of forest canopy for radio fuze 4

Backscattering characteristics of forest canopy for radio fu...

引用

2022 4th International Conference on Electronic Engineering and Informatics, EEI 2022

作者： Liu, Bing Hao, Xinhong Chen, Yanjun Science and Technology on Electromechanical Dynamic Control Laboratroy Beijing Insitute of Technology Beijing China

ISBN: (纸本)9783800759231

When the radio fuze is used in a forest environment, it is susceptible to interference from strong canopy backscattering clutter. In order to study the electromagnetic backscattering characteristics of the forest canopy and improve the ability of the radio fuze to anti forest clutter interference, based on the MIMICS theroy, the backscattering coefficients of radio fuzes under different incident angles, electromagnetic frequencyies, forest canopy height and forest canopy water content are analyzed. The influence model of backscattering coefficient on radio fuze echo wave amplitude is established to provide a basis for determining the optimal burst height. The result can be applied to the parameter optimization design of radio fuze against forest canopy backscattering. © VDE VERLAG GMBH ∙ Berlin ∙ Offenbach.

关键词： Backscattering

来源：评论

学校读者我要写书评

暂无评论

Research on Numerical Simulation of the instantaneity of a Mechanical Impact Fuze 4

Research on Numerical Simulation of the instantaneity of a M...

引用

4th International Conference on Defence technology, ICDT 2024

作者： Yang, Shanglin Wang, Yabin Luan, Donglin Guo, Pengda School of Mechatronical Engineering Beijing Institute of Technology Beijing China Science and Technology on Electromechanical Dynamic Control Laboratory China

The instantaneity of a fuze refers to the time interval between the projectile's impact on the target and the completion of detonation. This parameter is a critical indicator for evaluating the performance of ammunition. To investigate the factors influencing instantaneity, a numerical simulation was conducted on the process of a projectile striking a target under different conditions, including impact angle, fuze material, and target material. The simulation results, under 12 different conditions, produced acceleration curves and instantaneity for the firing device. Through the analysis of the results, the study establishes key design principles for the firing device of the fuze: the protection design of the ignition device and the selection of the ignition strategy should consider the maximum and minimum impact angles and target hardness. Choosing an ignition device with a low structural strength or a fuze body material with lower hardness and strength can enhance the fuze's instantaneity The target hardness and impact angle greatly affect the fuze's instantaneity of the fuze, and appropriate structural strength should be selected in the design. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Projectiles

来源：评论

学校读者我要写书评

暂无评论

Low SNR FM signal preprocessing method based on low-order cyclic statistics and WVD distribution 2

Low SNR FM signal preprocessing method based on low-order cy...

引用

2nd International Conference on Robotics, Artificial Intelligence and Intelligent control, RAIIC 2023

作者： Li, Jianfeng Huang, Dingkun Yan, Xiaopeng Dai, Jian Beijing Institute of Technology Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical Engineering Beijing100081 China

ISBN: (纸本)9798350328004

In order to solve the problem of poor noise suppression effect and long processing time of FM signal under the condition of low SNR by traditional preprocessing methods, a signal preprocessing method based on low-order cyclic statistics and WVD distribution is proposed. The method firstly calculates the cyclic mean value of incoming wave signal, and then transforms the incoming wave signal domain through IFFT algorithm with variable points. Finally, the time-frequency ridge of the FM signal is obtained by WVD time-frequency analysis, and the binary image transformation is carried out. Through simulation analysis, the time-frequency preprocessing method proposed in this paper can greatly reduce the calculation amount and improve the real-time performance while retaining the accuracy of time-frequency features, and provide effective support for subsequent sorting identification and parameter estimation. © 2023 IEEE.

关键词： Binary images

来源：评论

学校读者我要写书评

暂无评论

Simulation and Analysis of Position Change Deviation of Equivalent Measurement of Time Domain Transient Magnetic Field Differential Probe 17th

Simulation and Analysis of Position Change Deviation of Equi...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Li, Fadong Cao, Ronggang Li, Jiawu Cao, Yuxi Zhou, Yu Zhang, Anqi Science and Technology On Electromechanical Dynamic Control Laboratory Beijing Institute of Technology Beijing100081 China Tangshan063611 China

ISBN: (纸本)9789819903566

This paper used Ls-Dyna to simulate the measurement process of the differential probe in the time-domain transient magnetic field, then figure out the displacement-time and velocity-time data measured by the differential probes. There is a variation in the equivalent measurement position of the differential probes by comparing the displacement data of the probes with the corresponding simulation values. From the simulation results. In the previous phase of the armature acceleration, the probe displacement deviates significantly from the simulated value;with the increase of the armature velocity, this value fluctuates;at the telophase of acceleration, the displacement difference is negligible. The equivalent displacement deviation of the corresponding simulation value shows positive and negative fluctuations based on the displacement difference of adjacent probes. Excluding extreme cases, the absolute value of the deviation is within 5%;at the acceleration telophase, it is within 2%. This deviation makes the output of the differential probes inaccurate in the time domain, which is significant for the related experiments when measuring the transient information of the armature motion in the electromagnetic launch by the differential probe. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Probes

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：