检索结果-内蒙古大学图书馆

2024 Asia Communications and Photonics conference, ACP 2024 and International conference on Information Photonics and optical Communications, IPOC 2024

作者： Xie, Yanghua Zhou, Jinkai Guo, Bofan Tu, Jiajing Du, Cheng Gao, Shecheng Department of Electronic Engineering College of Information Science and Technology Jinan University Guangzhou China Fiberhome Telecommunication Technologies Co. Ltd. Wuhan China

ISBN: (纸本)9798350379266

In this work, we present a multimode erbium-doped fiber (MM-EDF) design scheme optimized by neural network, which effectively reduces inter-mode-group crosstalk and achieves high gain and low differential mode gain (DMG). The designed fiber supports the transmission of up to 100 modes across 10 mode groups, and by optimizing the ∆neff within and between groups, we significantly lower inter-mode-group crosstalk. The demonstrated erbium ion distribution structure we designed shows a high degree of overlap with the mode distribution, achieving mode gains greater than 29 dB and DMG less than 1.38 dB. This design holds promise for low-crosstalk, high-gain, large-capacity online transmission systems. © 2024 IEEE.

关键词： Crosstalk

来源：评论

学校读者我要写书评

暂无评论

Third International conference on Advanced Manufacturing Technology and Manufacturing systems, ICAMTMS 2024

Third International Conference on Advanced Manufacturing Tec...

引用

3rd International conference on Advanced Manufacturing Technology and Manufacturing systems, ICAMTMS 2024

ISBN: (纸本)9781510681804

The proceedings contain 183 papers. The topics discussed include: a practical study of a broadband chip amplifier;mechanical design and analysis of 2400kV DC UHV test equipment without local discharge;design of brushless DC motor control system for electric vehicles based on microcontroller;design of automatic control system of self-leveling cement mixing device based on PLC;research on simulation of superalloy drilling processing based on DEFORM;design of permanent magnet discrete pole cluster adaptive manipulator;design and simulation of a multifunctional care bed;the design of rail straightness detector based on the laser displacement sensor;optimization design of sea cucumber bait mixing device based on flow field analysis;a wax printed mold for prototyping microfluidic devices;and blind interconnection design method based on subminiature push-on coaxial connector.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Antenna design and optimization for short-range and high-speed wireless communication systems 8

Antenna design and optimization for short-range and high-spe...

引用

8th International conference on Electrical, Mechanical and Computer engineering, ICEMCE 2024

作者： Yin, Yiming Jiang, Chengtao Yin, Xiaojie Zheng, Junshou Hao, Qinfen Wuxi Institute of Interconnect Technology Wuxi214000 China Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Institute of Computing Technology Chinese Academy of Sciences Beijing100080 China

ISBN: (纸本)9798331506230

Information technology, led by artificial intelligence, is in a rapid growth phase. With the continuous expansion of terminals and application modes, there is an explosive growth in data traffic. For data centers, this presents both development opportunities and numerous challenges. Millimeter-wave and terahertz optical wireless communication technology holds the promise of addressing issues in data centers, such as complex optical fiber links and significant heat dissipation pressure. In this paper, we focus on the radio frequency (RF) antenna, which is the key component of signal transmission in optical wireless communication systems applied to data centers. We have designed a variety of broadband RF antennas operating at 30 GHz, with a bandwidth exceeding 5 GHz. These antennas were fabricated on printed circuit board (PCB), and their S- parameters were measured using a vector network analyzer. The measurement results were found to be generally consistent with the simulation results. The broadband RF antennas we designed can be applied in short-range, high-speed wireless communication scenarios, such as data centers and system on wafer. © 2024 IEEE.

关键词： optical fibers

来源：评论

学校读者我要写书评

暂无评论

design of intelligent optimization system for transmission lines based on BP neural network 9

Design of intelligent optimization system for transmission l...

引用

9th International conference on Electromechanical Control Technology and Transportation, ICECTT 2024

作者： Gong, Shijie Li, Chu Liu, Fuyu Stata Grid Hebei Economic Research Institute Hebei Shijiazhuang050000 China Hebei Zhibo Electric Power Engineering Design Co. Ltd Hebei Shijiazhuang050000 China

ISBN: (纸本)9781510682399

In the electric power system, transmission lines perform a vital role. This article provides a comprehensive analysis of the current situation and existing problems in the maintenance of transmission and transformation lines through the practical summary of maintenance work, in order to provide a reference for improving the safe operation level of transmission and transformation lines. This article first provides a detailed introduction to the Back Propagation neural network(BPNN) and intelligent optimization of transmission lines. Then, it explores the design of an intelligent optimization system for transmission lines based on BPNN. At the same time, it discusses the design of an optimization system for transmission lines based on the algorithm proposed in this article. Finally, experiments were conducted to verify that the intelligent optimization system for transmission lines based on BPNNs has better accuracy and accuracy in detecting line faults than systems based on random forest models and convolutional block attention models. The fault detection rate of the algorithm in this article is 16% and 21% higher than that of the random forest model and convolutional block attention model systems. The fault location accuracy of the algorithm in this article is 10.88% and 16.11% higher than that of the systems using random forest models and convolutional block attention models. The accuracy of fault type recognition in this algorithm is higher than that of the random forest model and convolutional block attention model systems by 7% and 17.12%, respectively. © 2024 SPIE.

关键词： Power transmission lines

来源：评论

学校读者我要写书评

暂无评论

design of a Transimpedance Amplifier for Self-Mixing optical Feedback System

Design of a Transimpedance Amplifier for Self-Mixing Optical...

引用

International conference on systems, Control and Automation, ICSCA 2023

作者： Bhardwaj, Vibhor Kumar Maini, Surita Teerthanker Mahaveer University Uttar Pradesh Moradabad India Sant Longowal Institute of Engineering and Technology Punjab Sangrur India

ISBN: (纸本)9789819773831

The interferometric signal acquired in the photodetection method, under weak feedback conditions, often has a less magnitude, typically in the microampere range (≈10–6). Due to low magnitude, the characteristical points of the interferometric signal are highly susceptible to noise originating from optical and electronic arrangements. This meager range of current signals has been translated into an appropriate voltage level for faithful signal processing. In this paper, the authors proposed a dedicated transimpedance amplifier (TIA) to convert the photodiode current from 0.05 to 0.4 mA to a voltage level between 0.1 V and 3.2 V. The TIA has been designed using OPA320 and exhibits a gain of 8 kV/A with a −3 dB bandwidth of 250 kHz. The proposed TIA is simulated in TINA-TI and validated by fabricating a four-layer PCB prototype. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： optical feedback

来源：评论

学校读者我要写书评

暂无评论

A quantum annealing approach with a problem specific initial state for the combinatorial selection of catalog lenses for the automated optics design

A quantum annealing approach with a problem specific initial...

引用

International optical design conference 2023

作者： Bussek, Thomas Völl, Annika Stollenwerk, Jochen Holly, Carlo RWTH Aachen University Chair for Technology of Optical Systems TOS Steinbachstraße 15 Aachen52074 Germany Fraunhofer-Institute for Laser Technology ILT Steinbachstraße 15 Aachen52074 Germany

Using quantum annealers within tools for the automated optics design promises to yield advantages regarding computational costs and design quality. These advantages can be enhanced by using problem specific anneal sch... 详细信息

ISBN: (数字)9781510668515

ISBN: (纸本)9781510668508

关键词： Annealing

来源：评论

学校读者我要写书评

暂无评论

design AND VIRTUAL PROTOTYPING OF A CONSTANT FORCE GRIPPER FOR FOOD HANDLING AND HARVESTING

DESIGN AND VIRTUAL PROTOTYPING OF A CONSTANT FORCE GRIPPER F...

引用

ASME International design engineering Technical conferences / 43rd Annual Computers and Information in engineering conference (IDETC-CIE)

作者： Baggetta, Mario Hao, Guangbo Berselli, Giovanni Univ Genoa Dept Mech Energy Management & Transportat Engn Genoa Italy Univ Coll Cork Sch Engn & Architecture Elect & Elect Engn Elect Bldg 1-06Coll Rd Cork Ireland

ISBN: (纸本)9780791887295

This paper presents the design and virtual prototyping of a constant force gripper for food handling and harvesting, aimed at reducing the production costs associated with manual labor performed by human workers. The gripper has been designed using advanced Computer-Aided design (CAD) software to be easily fabricated using additive manufacturing techniques. The solution involved the use of a lumped compliant element to obtain the desired constant force output, resulting in a gripper that is easily maintainable and cost-effective. The use of a constant force mechanism eliminates the need for dedicated sensors and complex control algorithms to avoid object damage, as completely closing the grasp is sufficient for every operation. The optimization of the compliant element shape has been crucial for achieving the desired constant force output and has required a Matlab software optimization framework using the pseudo-rigid body model equations and an fmincon algorithm. The virtual prototyping approach, using a flexible multi-body dynamics software, has enabled fast and easy testing of the CAD design, leading to an optimized final design with high performance and precision. The study results have demonstrated the potential of virtual prototyping for the design and optimization of advanced robotic systems in cost-sensitive industries, particularly in the food harvesting sector.

关键词： Constant Force Device Compliant Element Virtual Prototyping Computer Aided engineering Food Harvesting

来源：评论

学校读者我要写书评

暂无评论

Multi-Objective Evolutionary Algorithms for Hardware design Space Exploration 4

Multi-Objective Evolutionary Algorithms for Hardware Design ...

引用

4th International conference on Innovative Practices in Technology and Management, ICIPTM 2024

作者： Kumar, Rahul Kapoor, Monit Varshney, Neeraj Shrivastava, Anurag Saraswat, Manish Singh, Devendra Chitkara University Chitkara Centre for Research and Development Himachal Pradesh India Chitkara University Institute of Engineering and Technology Chitkara University Centre of Research Impact and Outreach Punjab Rajpura140401 India GLA University Department of Computer Engineering and Applications Mathura India Saveetha Institute of Medical and Technical Sciences Saveetha School of Engineering Tamilnadu Chennai India Lloyd Institute of Engineering & Technology Greater Noida India Uttaranchal University Uttaranchal Institute of Technology Department of Computer Science & Engineering Dehradun India

ISBN: (纸本)9798350307757

This work investigates the use of Multi-Objective Evolutionary Algorithms (MOEAs) in the Hardware design Space Exploration context. Through the use of a heterogeneous data set that spanned different hardware configurations and performance measurements, four widely known MOEAs namely NSGA-ii, SPEA2 IBEA MOPSO have been systematically assessed. Experiments have been aimed at major indicators, including convergence, diversity, and hypervolume maximization. It has been shown that NSGA-ii and SPEA2 have been largely well-balanced in terms of convergence versus diversity, a feature that makes them suitable options for the optimization task. IBEA has been best in hypervolume maximization, which indicates that it is a powerful method when applied to scenarios where extensive coverage of the design space needs to be achieved. MOPSO, using the ideas from particle swarm optimization, gave a solid competitor that featured excellent convergence and diversity. This work also does a comparative study with related works, which shows the generality of MOEAs in different domains such as facility location optimization, system design and control theory robotics bioinformatics computer vision, and networked systems. The research provides relevant inputs to help researchers and practitioners choose the best algorithms for hardware design optimization, which includes considering specific goals and constraints. Consequently, the research shows us how this way and a method of creation. © 2024 IEEE.

关键词： Multiobjective optimization

来源：评论

学校读者我要写书评

暂无评论

Innovative design of electric vehicle based on open-loop cam steering 3

Innovative design of electric vehicle based on open-loop cam...

引用

3rd International conference on Mechatronics and Mechanical engineering, ICMME 2024

作者： Cai, Xinyuan Li, Wei Yang, Canyu Gong, Jinding Lou, Hangfei College of Mechanical and Transportation Southwest Forestry University Kunming650224 China

ISBN: (纸本)9781510681651

In order to realize the car to travel according to the expected route, electronic components such as microcomputer and sensor are often used to control the car to achieve the purpose of tracking. Then, can only use the pure mechanical steering structure to achieve the function of reproducing the preset complex long trajectory. In order to solve this problem, the author explores a design scheme based on open-loop cam to control the car to turn. It is required that the designed car can use new energy to drive the corresponding transmission mechanism to ensure that the car passes the mark point in order. In order to meet the corresponding function and travel accuracy, the design of steering system is the key to ensure the design effect. In the design module of the key part cam. Firstly, the preset trajectory is drawn by Bessel curve. Secondly, the geometric relationship between the front wheel and the driven wheel is used to solve the front wheel angle of the car. Thirdly, the cam stroke is obtained according to the steering characteristics of the tangent steering mechanism. Finally, the cam stroke is polarized and enveloped to obtain the design data of the cam that meets the needs of the path. Through simulation analysis, the car 's running trajectory and the preset trajectory have a high degree of repeatability, which meets the established requirements, and also provides design ideas for other mechanical systems with complex strokes. © 2024 SPIE.

关键词： Bessel functions

来源：评论

学校读者我要写书评

暂无评论

Status calibration of a pulse shaping system for the high power laser facility based on deep learning

引用

Optics Express 2025年第10期33卷 21776-21795页

作者： Chen, Wei Lu, Xinghua Wang, Xiaochao Fan, Wei Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China

To achieve high-precision and high-efficiency laser pulse shaping in the front-end system of high-power laser facilities, this paper proposes a deep learning model aimed at calibrating the initial operational status of the pulse shaping closed-loop control system. The model swiftly establishes a nonlinear mapping between the designed optical waveforms and the shaping electrical signals generated by the arbitrary waveform generator (AWG). The proposed model employs a U-shaped structure integrated with residual connections as its core network. An attention mechanism comprising the Kolmogorov-Arnold Network (KAN) and the temporal convolution network (TCN) between the model’s input and output layers. The dataset constructed based on the pulse waveforms collected by the front-end system of the SG-ii facility is used to train and test the model. The RMSEs between the predicted AWG waveforms and the targets are less than 5%, as well as the input complex waveforms and the waveforms with a high contrast of 100:1. The RMSEs for waveforms of different shapes and contrasts are less than 3%. The method can rapidly invert AWG shaping electrical signals by optical waveforms with different shapes, pulse widths and contrasts. Based on the model, the output optical waveforms closely approximate the design target in the initial iteration of the closed-loop control system, which will improve accuracy and efficiency of the pulse shaping system. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Closed loop control systems

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：