检索结果-内蒙古大学图书馆

arXiv 2023年

作者： Kovalenko, Ilya Barton, Kira Moyne, James Tilbury, Dawn M. Department of Mechanical Engineering and Industrial & Manufacturing Engineering Pennsylvania State University University ParkPA United States The Robotics Department The Department of Mechanical Engineering University of Michigan Ann ArborMI United States

Rapid advances in artificial intelligence (AI) have the potential to significantly increase the productivity, quality, and profitability in future manufacturing systems. Traditional mass-production will give way to personalized production, with each item made to order, at the low cost and high-quality consumers have come to expect. Manufacturing systems will have the intelligence to be resilient to multiple disruptions, from small-scale machine breakdowns, to large-scale natural disasters. Products will be made with higher precision and lower variability. While gains have been made towards the development of these factories of the future, many challenges remain to fully realize this vision. To consider the challenges and opportunities associated with this topic, a panel of experts from Industry, Academia, and Government was invited to participate in an active discussion at the 2022 Modeling, Estimation and Control Conference (MECC) held in Jersey City, New Jersey from October 3- 5, 2022. The panel discussion focused on the challenges and opportunities to more fully integrate AI into manufacturing systems. Three overarching themes emerged from the panel discussion. First, to be successful, AI will need to work seamlessly, and in an integrated manner with humans (and vice versa). Second, significant gaps in the infrastructure needed to enable the full potential of AI into the manufacturing ecosystem, including sufficient data availability, storage, and analysis, must be addressed. And finally, improved coordination between universities, industry, and government agencies can facilitate greater opportunities to push the field forward. This article briefly summarizes these three themes, and concludes with a discussion of promising directions. © 2023, CC BY.

关键词： Artificial intelligence

来源：评论

学校读者我要写书评

暂无评论

Enhancement Three-Dimensional Localization of ArUco Marker Under Photon-Starved Conditions 23

Enhancement Three-Dimensional Localization of ArUco Marker U...

引用

23rd International Conference on Control, Automation and Systems, ICCAS 2023

作者： Ha, Jin-Ung Kim, Hyun-Woo Cho, Myungjin Lee, Min-Chul Kyushu Institute of Technology Department of Computer Science and Networks Fukuoka Iizuka820-8502 Japan School of ICT Robotics and Mechanical Engineering Iitc Hankyong National University Kyonggi-do Anseong17579 Korea Republic of

ISBN: (纸本)9788993215274

In this paper, we propose a method to improve the recognition rate of ArUco markers under photon-starved conditions by using preprocessing such as photon counting algorithm and histogram equalization to estimate the exact three-dimensional(3D) location of improved objects. In the conventional ArUco marker recognition technology, the recognition rate of ArUco markers decreases under photon-starved conditions, and the exact 3D location of the object cannot be estimated. In the conventional ArUco marker recognition technology, the photon counting algorithm can be used to estimate the 3D location of objects by recognizing ArUco markers under photon-starved conditions. However, the photon counting algorithm has the problem that the computation speed is slowed down when there are many photons to estimate, and the recognition rate of the ArUco marker is reduced when there are few photons to estimate. To solve these problems of the photon counting algorithm and improve the recognition rate of ArUco markers, we apply histogram equalization to ArUco markers with the photon counting algorithm. To verify the feasibility of the proposed method, we implement simulations using the Open Manipulator-X platform and show performance metrics such as Peak Signal-to-Noise Ratio (PSNR). © 2023 ICROS.

关键词： Photons

来源：评论

学校读者我要写书评

暂无评论

An Optimization-Based Planner with B-spline Parameterized Continuous-Time Reference Signals

An Optimization-Based Planner with B-spline Parameterized Co...

引用

IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

作者： Chuyuan Tao Sheng Cheng Fanxin Wang Yang Zhao Naira Hovakimyan Department of Mechanical Science and Engineering University of Illinois at Urbana-Champaign USA Department of Department of Mechatronics and Robotics Xi’an Jiaotong-Liverpool University China

ISBN: (数字)9798350377705

ISBN: (纸本)9798350377712

For the cascaded planning and control modules implemented for robot navigation, the frequency gap between the planner and controller has received limited attention. In this study, we introduce a novel B-spline parameterized optimization-based planner (BSPOP) designed to address the frequency gap challenge with limited onboard computational power in robots. The proposed planner generates continuous-time control inputs for low-level controllers running at arbitrary frequencies to track. Furthermore, when considering the convex control action sets, BSPOP uses the convex hull property to automatically constrain the continuous-time control inputs within the convex set. Consequently, compared with the discrete-time optimization-based planners, BSPOP reduces the number of decision variables and inequality constraints, which improves computational efficiency as a byproduct. Simulation results demonstrate that our approach can achieve a comparable planning performance to the high-frequency baseline optimization-based planners while demanding less computational power. Both simulation and experiment results show that the proposed method performs better in planning compared with baseline planners in the same frequency.

关键词： Convex hulls Navigation Simulation Linear programming Planning Computational efficiency Splines (mathematics) Optimization Frequency control Intelligent robots

来源：评论

学校读者我要写书评

暂无评论

A ResNet-based approach for accurate radiographic diagnosis of knee osteoarthritis

引用

CAAI Transactions on Intelligence Technology 2022年第3期7卷 512-521页

作者： Yu Wang Shibo Li Baoliang Zhao Jianwei Zhang Yuanyuan Yang Bing Li School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhenChina Shenzhen Key Laboratory of Minimally Invasive Surgical Robotics and System Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina TAMS Department of InformaticsUniversity of HamburgHamburgGermany

Currently X-ray images are clinically graded by experienced clinicians using the Kellgren and Lawrence(KL)scoring ***,individual scoring is subjective and error *** study proposes an approach for automated knee osteoarthritis classification based on deep neural *** knee X-ray images are first preprocessed with frequency-domain filtering and histogram normalisation,making the trabecular bone texture more obvious and benefiting the subsequent classification ***,a two-step classification strategy is proposed by extracting the joint centre based on the VGG network and classifying osteoarthritis grades based on the ResNet-50 *** addition,a rebalance operation is proposed to deal with the dataset unbalance problem,and a quick search technique is proposed to improve the iterative search efficiency for the joint *** all of these techniques,a classification accuracy of 81.41%is obtained,which is higher compared to the state-of-the-art approaches.

关键词： AMSGrad knee osteoarthritis recognition ResNet VGG

来源：评论

学校读者我要写书评

暂无评论

A Novel Electromagnetic Driving System for 5-DOF Manipulation in Intraocular Microsurgery

引用

Cyborg and Bionic Systems 2024年第1期5卷 640-652页

作者： Yangyu Liu Dezhi Song Guanghao Zhang Qingyu Bu Yuanqing Dong Chengzhi Hu Chaoyang Shi Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin 300072China Guangdong Provincial Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhen 518055China

This work presents a novel electromagnetic driving system that consists of eight optimized electromagnets arranged in an optimal configuration and employs a control framework based on an active disturbance rejection controller(ADRC)and virtual *** optimal system configuration enhances the system’s compatibility with other ophthalmic surgical instruments,while also improving its capacity to generate magnetic force in the vertical ***,the optimal electromagnet parameters provide a superior comprehensive performance on magnetic field generation capacity and thermal ***,the presented design achieves a stronger capacity for sustained ***,the ADRC controller effectively monitors and further compensates the total disturbance as well as gravity to enhance the system’s ***,the implementation of virtual boundaries substantially enhances interactive security via collision *** magnetic and thermal performance tests have been performed on the electromagnet to verify the design *** proposed electromagnet can generate a superior magnetic field of 2.071 mT at a distance of 65 mm with an applied current of 1 ***,it demonstrates minimal temperature elevation from room temperature(25℃)to 46℃ through natural heat dissipation in 3 h,thereby effectively supporting prolonged magnetic manipulation of intraocular ***,trajectory tracking experiments with disturbances have been performed in a liquid environment similar to the practical ophthalmic surgery scenarios,to verify the robustness and security of the presented control *** maximum root mean square(RMS)error of performance tests in different operation modes remains 35.8μm,providing stable support for intraocular microsurgery.

关键词： electromagnetic driving system ophthalmic surgical instrumentswhile control framework active disturbance rejection eight optimized electromagnets optimal electromagnet parameters generate magnetic force virtual boundarythe

来源：评论

学校读者我要写书评

暂无评论

Statistical analysis of the effect of varying material and manufacturing conditions on the mechanical properties of high-density polyethylene/layered double hydroxide composites

SPE Polymers

引用

SPE Polymers 2023年第4期4卷 156-174页

作者： Botha, Natasha Coetzer, Roelof Inglis, Helen M. Labuschagne, F.J.W.J. Centre for Robotics and Future Production Future Production: Manufacturing Advanced Production and Security Division Council for Scientific and Industrial Research Pretoria South Africa Department of Mechanical and Aeronautical Engineering Faculty of Engineering Built Environment and Information Technology University of Pretoria Hatfield South Africa School of Mathematical and Statistical Sciences Faculty of Natural and Agricultural Sciences North-West University Potchefstroom South Africa Department of Chemical Engineering Faculty of Engineering Built Environment and Information Technology University of Pretoria Hatfield South Africa

Polymers are used in various industrial applications due to their ease of production, light weight, and ductility. Fillers such as clays are added to polymers to improve a range of factors such as material processing, thermal properties, fire retardance and cost. However, adding clays may negatively impact the mechanical performance of the composite. In addition, manufacturing parameters, for example, number of extrusions, press time, and so forth may also have an influence on the resulting composite system. This study performs a statistical analysis on a set of previously obtained experimental results, which investigated the influence of various manufacturing, material, and testing parameters on the composite mechanical properties. Exploratory data and statistical analysis techniques are applied to the historical tensile test data to gain insight into the influence on mechanical properties as well as the relationships and interactions between the parameters. Specifically, it is shown that clay loading does not have a statistically significant effect on the composite mechanical properties, which is contrary to literature. Another surprising result is the poor performance of the clay that is compatible with high-density polyethylene compared to the clay that is compatible with poly vinyl chloride. The contribution of this paper is to demonstrate the usefulness of applying statistical analysis on a large volume of data to understand the diverse correlations between the different variables. © 2023 The Authors. SPE Polymers published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers.

关键词： analysis of variance exploratory data analysis polymer-clay composites tensile properties

来源：评论

学校读者我要写书评

暂无评论

Intuitive Teleoperation Control for Flexible Robotic Endoscopes Under Unkonwn Environmental Interferences

Intuitive Teleoperation Control for Flexible Robotic Endosco...

引用

International Conference on Control and Automation (ICCA)

作者： Wei Chen Yiang Lu Bin Li Jianshu Zhou Hanwen Cao Fei Chen Yun-Hui Liu Department of Mechanical and Automation Engineering T Stone Robotics Institute The Chinese University of Hong Kong Hong Kong Hong Kong Center for Logistics Robotics Hong Kong

ISBN: (数字)9798350354409

ISBN: (纸本)9798350354416

Teleoperation control has been taken a pivotal role in robot-assisted surgical interventions. Unlike hand-eye coordination employed in the conventional laparoscopic systems, the eye-head coordination challenge arises with flexible robotic endoscopes, necessitating a distinct intuitive decision-making approach. In this paper, we introduce an intuitive teleoperation control scheme to address the eye-head coordination intricacies inherent in continuum endoscopic robots. The method achieves field of view (FOV) control consistent with surgeons' intuition for the robots based on the modelling of a virtual workspace (VW). By leveraging accurate shape feedback from embedded multi-core fiber Bragg gratings (FBGs), an observer-based anti-interference algorithm is implemented allowing a stable line of sight for robust motion control, even in challenging operational conditions with unknown disturbances. A class of robotic flexible endoscopes commonly used is analyzed specifically and deployed to validate the proposed approach. The efficacy and superiority of the proposed algorithm have been demonstrated through experimental results performed on a urology robotic system, encompassing trajectory tracking and disturbance resistance tasks.

关键词： Resistance Endoscopes Trajectory tracking Shape Robot kinematics Surgery Fiber gratings

来源：评论

学校读者我要写书评

暂无评论

Loss Balancing for Physics-Informed Neural Networks Considering Procedure for Solving Partial Differential Equations

Loss Balancing for Physics-Informed Neural Networks Consider...

引用

International Symposium on Soft Computing and Intelligent Systems (SCIS)

作者： Manabu Kojima Kazuma Otsuki Masato Suzuki Masajiro Abe Masaaki Baba Kazuya Yokota Master's Program in Mechanical Engineering Nagaoka University of Technology Nagaoka Japan Department of System Safety Engineering Nagaoka University of Technology Nagaoka Japan Department of Mechanical Engineering Nagaoka University of Technology Nagaoka Japan

ISBN: (数字)9798350373332

ISBN: (纸本)9798350373349

With the development of machine learning, numerical analysis using neural networks has been devised. Remarkably, physics-informed neural networks (PINNs) enable physically consistent numerical analysis by introducing a loss function that conforms to relevant governing equations. Moreover, research is rapidly advancing for the application of PINNs to inverse analysis in areas such as physical property identification. For a PINN to learn governing equations, the weights of the loss functions should be properly determined because they have different roles in components such as boundary conditions, initial conditions, and governing equations. However, weight setting is generally challenging. We propose a loss balancing method considering the procedure for solving partial differential equations. The proposed method is validated through comparisons with conventional solvers.

关键词： Training Heating systems Numerical analysis Partial differential equations Neural networks Manuals Machine learning Object recognition MATLAB Convergence

来源：评论

学校读者我要写书评

暂无评论

Design and Performance Comparison of Low Dropout Regulators for a 32-bit Microcontroller Using 22nm Technology

Design and Performance Comparison of Low Dropout Regulators ...

引用

IEEE Latin American Symposium on Circuits and Systems (LASCAS)

作者： Emmanuel K. M. Johnson Luis Victor N. Lima Pamela. R. A. N. Campagnucci Sandro A. P. Haddad Wellington A. Amaral Daniel M. Muñoz Department of Mechanical Engineering Mechatronics Graduate Program University of Brasilia Brasilia DF Brazil Faculty of Gama Electronics Engineering Undergraduate Program University of Brasilia Brasilia DF Brazil

ISBN: (数字)9798331522124

ISBN: (纸本)9798331522131

This paper presents a comparison between two LDOs (Low Dropout Regulators) developed for a PMIC (Power Management Integrated Circuit) responsible for powering a 32-bit microcontroller based on the RISC-V microarchitecture, designed in 22 nm technology. The microcontroller will be integrated with a radio frequency interface for IoT (Internet of Things) applications. Two LDOs were designed: one with external compensation and the other a capacitor-less LDO. Both operate with an input voltage of 2.5V, an output voltage of 0.8V, and a maximum current of 150mA. The externally compensated LDO exhibited greater stability in response to load variations and a higher PSRR (Power Supply Rejection Ratio), while the capacitor-less LDO demonstrated faster regulation speed and occupied a chip area similar to the externally compensated LDO.

关键词： Regulators Microcontrollers Power supplies Power system management Simulation Stability analysis Regulation Circuit stability Internet of Things Voltage control

来源：评论

学校读者我要写书评

暂无评论

How a Global Elective engineering class impacts engineering Students' Global Efficacy

How a Global Elective Engineering class impacts Engineering ...

引用

2023 IEEE IFEES World engineering Education Forum and Global engineering Deans Council, WEEF-GEDC 2023

作者： Gurganus, Jamie R. Malschutzky, Michael M. Do Carmo Santos, Joao Carlos Zupan, Marc Dos Santos, Abel Dias Engineering & Computing Education Program & Graduate School Baltimore United States Centre for Teaching Development and Innovation Department of Management Sciences Hochschule Bonn-Rhein-Sieg Sankt Augustin Germany College of Engineering and Information Technology Department of Mechanical Engineering Baltimore United States Departamento de Engenharia Mecânica Porto Portugal

ISBN: (纸本)9798350316025

Today's pluralistic and globalized society requires a global perspective in how we think, view ourselves, and relate to others to collaborate successfully with people with different cultural backgrounds. To support the development of a global perspective, universities cultivate international co-operations to enable international mobility for students, faculty, and staff. However, in-person mobility can be inhibited due to various reasons. To support a wider pool of students gaining international experience, modern digital mediated course formats can be used to offer virtual instead of in-person mobility. This contribution evaluates a digital mediated course for mechanical engineering students (Global engineering, GE) held in co-operation between an US and a Portuguese university, where internationally mixed student groups working on design projects in an Hyflex setting. Asides a literature driven discussion about the need for Global Engineers and a detailed description of the GE course, a longitudinal analysis was performed to assess the impact of the GE course on the students' development of a global perspective. The longitudinal analysis showed strong statistical support that the digitally mediated GE course improved the participating students' global perspective, assessed with the Global Perspective Inventory (GPI), tremendously. The observed improvements were in three of the six GPI dimensions comparable to an in-person semester abroad. Limitations of the study and future investigations are discussed. © 2023 IEEE.

关键词： Students

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：