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55th CIRP Conference on Manufacturing systems, CIRP CMS 2022

作者： Tumbajoy, Luisa M. Muñoz-Añasco, Mariela Thiede, Sebastian Industrial Automation Group Faculty of Electronics and Telecommunications Engineering University of Cauca Popayán 190002 Colombia Manufacturing Systems Faculty of Engineering Technology Department of Design Production and Management University of Twente De Horst 2 Building 20 Enschede7522 LW Netherlands

Increasing digitalization in manufacturing, often associated with terms like Industry 4.0 (I4.0) or Smart Manufacturing, is a topic of crucial concern for manufacturing companies. Different digital technologies (DTs) can be integrated into manufacturing processes and systems aiming at increasing flexibility, product quality or productivity. The type and scope of potential DTs must be carefully selected when planning and improving a manufacturing system. The definition and configuration could be supported by simulation techniques that assess the DTs' impact on the manufacturing system and its final performance. However, parametrizing the DTs into a simulation tool is not straightforward since appropriate models might be challenging to obtain and actual impacts of DTs are uncertain. Against this background, the paper presents methods to enable a simulation-based assessment while considering the impact of not just individual but also a combination of DTs. The paper introduces a framework to define the base characteristics of selected DTs within a manufacturing system and their parameterization into a commercial simulation tool. Furthermore, the usability and expectable results are demonstrated in a case study. © 2022 The Authors. Published by Elsevier B.V.

关键词： Industry 4.0 Key Performance Indicator Simulation Smart Manufacturing

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Upconversion Pumped Tm3+:KY3F10 Channeled Waveguide Laser at 2.3 μm and 1.9 μm

Upconversion Pumped Tm3+:KY3F10 Channeled Waveguide Laser at...

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2024 Advanced Solid State Lasers, ASSL 2024

作者： Ince, Faik Derya Morova, Yagiz Tonelli, Mauro Sennaroglu, Alphan Laser Research Laboratory Departments of Physics and Electrical-Electronics Engineering Koç University Istanbul34450 Turkey Department of Industrial & Systems Engineering Manufacturing and Automation Research Laboratory Rutgers University New BrunswickNJ United States Rumelifeneri Istanbul34450 Turkey MEGAMATERIALS s.r.l and Dipartimento di Fisica dell'Università di Pisa Largo B.Pontecorvo 3 Pisa56127 Italy

We demonstrate, for the first time, a femtosecond laser written Tm3+:KY3F10 waveguide laser at 2.3 μm in continuous-wave regime and at 1.9 µm in continuous-wave and passively Q-switched regimes by upconversion p... 详细信息

关键词： Femtosecond lasers

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Hardware Implementation of a Sliding Detection Algorithm for Robotic Hands Using Force Sensors

Hardware Implementation of a Sliding Detection Algorithm for...

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Symposium on Integrated Circuits and systems Design (SBCCI)

作者： Jose Mendoza-Peñaloza Daniel M. Muñoz Department of Mechanical Engineering Mechatronics Systems Graduate Program Automation and Control Group/GRACO Faculty of Gama Electronics Engineering Undergraduate Program University of Brasilia Brasilia DF Brazil

In this work, a sliding detection algorithm was proposed for a previously developed robotic hand through the utilization of force sensors. Previous works have designed several hardware architectures to filter sensor data, implement dynamic control, and machine learning models for controlling the robotic fingers using a single Field Programmable Gate Arrays (FPGA) chip. In this regard, the slip detection algorithm was developed to comprise three stages, each with a low computational cost, including a moving average filter, a first-order derivative, and a peak detection algorithm. A reference model was constructed and validated through an experimental protocol employing daily use objects to create a database. Subsequently, the slip detection algorithm was mapped onto hardware utilizing previously developed floating-point arithmetic IP cores and implemented using a Zynq 7020 device. The FPGA implementation was characterized in terms of resource occupation, power consumption, execution time, and numerical error with the reference model.

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NIAP: A Neighbor Information based Multichannel RFID Reader Anti-collision Protocol 2022

NIAP: A Neighbor Information based Multichannel RFID Reader ...

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7th International Conference on Intelligent Information Technology, ICIIT 2022

作者： Su, Zijun Wan, Chang He, Guannan Li, Zhonghua College Of Automation Guangdong University Of Technology China Guangdong Polytechnic Of Science And Technology China School Of Electronics And Information Technology Sun Yat-sen University China School Of Intelligent Systems Engineering Sun Yat-sen University China

ISBN: (纸本)9781450396172

Reader collisions may occur when readers interrogate tags simultaneously due to mutual interference in Radio Frequency IDentification (RFID) systems. Many state-of-the-art protocols are devoted to eliminate reader collisions to pursue high throughput. This paper proposes a Neighbor Information based multichannel RFID reader Anti-collision Protocol (NIAP). In terms of competition strategy, the competition priority of a reader is determined by its number of neighbor readers based on the solving maximum independent sets algorithm. With regard to channel switching strategy, a reader which wants to switch to a new channel judges the severity of the reader-to-tag collisions according to the distance from the interrogating neighbor reader. Eligible reader-to-tag collisions are allowed to occur considering the coverage of readers. The simulation results show the proposed NIAP outperforms the other multichannel protocols. © 2022 ACM.

关键词： Radio frequency identification (RFID)

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Predictive Follow the Gap Method for Dynamic Obstacle Avoidance

Predictive Follow the Gap Method for Dynamic Obstacle Avoida...

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International Workshop on Robot Motion and Control (RoMoCo)

作者： Emre Can Contarli Volkan Sezer Control and Automation Engineering Dept. Faculty of Electrical and Electronics Engineering Istanbul Technical University Maslak ISTANBUL Türkiye Smart and Autonomous Systems Laboratory (SASLab) Istanbul Technical University Maslak ISTANBUL Türkiye

ISBN: (数字)9798350393965

ISBN: (纸本)9798350393972

Advancements in autonomous mobile robots hinge on refining key components like mapping and path planning to address identified limitations. The local planner, crucial for obstacle avoidance, is a component of path planning. The Follow the Gap Method (FGM) stands out as a simple and effective obstacle avoidance algorithm. FGM calculates possible passage points by assessing gap sizes and positions of obstacles. Our focus lies in enhancing FGM's adaptability to dynamic environments. Introducing Predictive FGM, we incorporate robot and dynamic obstacle data to forecast future gaps and obstacle states. By integrating predictive elements, the algorithm selects gaps based on anticipated changes, enabling safer navigation by predicting the states of gaps and obstacles when they are closest to the robot. Evaluation via Monte Carlo simulations and real-world experiments with an autonomous wheelchair in dynamic environments show the effectiveness of Predictive FGM over standard FGM.

关键词： Robot motion Monte Carlo methods Navigation Heuristic algorithms Wheelchairs Prediction algorithms Path planning

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A bloom filter application for processing big datasets through MapReduce framework 35

A bloom filter application for processing big datasets throu...

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35th International Conference on Information Technologies, InfoTech 2021

作者： Todorov Marinov, Milko University of Ruse Faculty of Electrical Engineering Electronics and Automation Department of Computer Systems and Technologies 8 Studentska Str. Ruse7017 Bulgaria

ISBN: (纸本)9781665403245

MapReduce is a widely used programming model for processing big data. Bloom filters are spatially efficient probabilistic data structures for fast queries that tell whether an element is a member of a set and allow false positive results. With reference to this, this article discusses the main characteristics, realisation techniques and scenarios for using Bloom filters when big data is analysed and processed. In addition to this, the study presents an implementation of a Bloom filter in a distributed MapReduce framework. © 2021 IEEE.

关键词： Data handling

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Application of Fiber-Optic Technology for Measurement of Physical Quantities 33

Application of Fiber-Optic Technology for Measurement of Phy...

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33rd International Scientific Symposium Metrology and Metrology Assurance, MMA 2023

作者： Koshevoy, Nikolay Rozhnova, Tatiana Bekirov, Ali Zabolotnyi, Oleksandr Kostenko, Olena Pylypenko, Oleksandr Aerospace University Named after Ne Zhukovsky 'KhAI' Department of Intelligent Measuring Systems and Quality Engineering Kharkov Ukraine Kharkov National University of Radio Electronics Department of Design Automation Kharkov Ukraine Kharkiv National Air Force University Department of Radioelectronic Equipment of Aircrafts Kharkiv Ukraine Aerospace University Named after N.E.Zhukovsky 'KHAI' Department of Intelligent Measuring Systems and Quality Engineering Kharkov Ukraine Poltava State Agrarian Academy Poltava Ukraine

Fiber-optic devices for measuring such physical quantities as pressure, displacement, acceleration, vibration, humidity and temperature have been developed. The proposed devices make it possible to increase measuremen... 详细信息

ISBN: (纸本)9798350338102

关键词： Fiber optics

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Formulation of Optimization Problems with Radiation Field Phases as Design Variables for Pattern Synthesis of Linear Antenna Arrays

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China Communications 2022年第12期19卷 86-100页

作者： Fei Zhao Jun He Sanyou Zeng Changhe Li Qinghui Xu Zhigao Zeng School of Mechanical Engineering and Electronic Information China University of GeosciencesWuhan 430074China Science and Technology on Blind Signal Processing Laboratory Southwest Electronics and Telecommunication Technology Research InstituteChengdu 610041China School of Automation China University of GeosciencesWuhan 430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan 430074China College of Computer Hunan University of TechnologyZhuzhou CityHunan Province412007China

Pattern synthesise of antenna arrays is usually complicated optimization problems,while evolutionary algorithms(EAs)are promising in solving these *** paper does not propose a new EA,but does construct a new form of optimization *** new optimization formulation has two differences from the common *** is the objective function is the field error between the desired and the designed,not the usual amplitude error between the desired and the *** difference is beneficial to decrease complexity in some *** second difference is that the design variables are changed as phases of desired radiation field within shaped-region,instead of excitation *** difference leads to the reduction of the number of design variables.A series of synthesis experiments including equally and unequally spaced linear arrays with different pattern shape requirements are applied,and the effectiveness and advantages of the proposed new optimization problems are *** results show that the proposing a new optimization formulation with less complexity is as significant as proposing a new algorithm.

关键词： pattern synthesis evolutionary algorithms linear antenna arrays

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Stabilizing a Class of Periodical Time-Delay Milling systems by Adaptive Active Control Method

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IEEE Transactions on Industrial Informatics 2025年第6期21卷 4457-4465页

作者： Wu, Yue Zhang, Hai-Tao Xu, Bowen Ren, Gui-Ping Shi, Yang Chen, Guanrong Beijing Forestry University State Key Laboratory of Efficient Production of Forest Resources Key Laboratory of National Forestry and Grassland Administration on Forestry Equipment and Automation School of Technology Beijing100083 China Huazhong University of Science and Technology School of Artificial Intelligence and Automation the State Key Laboratory of Digital Manufacturing Equipment and Technology Institute of Artificial Intelligence MOE Engineering Research Center of Autonomous Intelligent Unmanned Systems Wuhan430074 China Huazhong University of Science and Technology Guangdong HUST Industrial Technology Research Institute Dongguan523808 China Guangdong Provincial Key Laboratory of Manufacturing Equipment Digitization Dongguan523808 China Northwestern Polytechnical University School of Artificial Intelligence Optics and Electronics Xi'an710072 China University of Victoria Department of Mechanical Engineering VictoriaBCV8W 2Y2 Canada City University of Hong Kong Department of Electrical Engineering 999077 Hong Kong

Periodical time-delay scenario is often encountered in industrial manufacturing processes. However, the presence of time delays and periodical coefficients brings challenges to controller design and system analysis, which thereby hinders the performance improvement of such systems. In this work, the dynamics of milling systems are transformed into a time-invariant finite-dimensional uncertain model described by Fourier series and Padé approximation. An adaptive active control law is accordingly designed to stabilize such complex dynamics. With the assistance of LaSalle–Yoshizawa theorem, conditions are derived to guarantee sufficiently large stability regions of the corresponding closed-loop system. A numerical case study is conducted on a standard two degrees of freedom milling perturbation system to substantiate the superiority of the proposed adaptive active control technique in terms of enlarged stable operational regions. © 2005-2012 IEEE.

关键词： Milling (machining)

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Stability analysis of systems with two additive time-varying delay components via the zero-valued equations 48

Stability analysis of systems with two additive time-varying...

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48th Annual Conference of the IEEE Industrial electronics Society, IECON 2022

作者： Liu, Meng He, Yong Jiang, Lin School of Automation China University of Geosciences Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China Ministry of Education Engineering Research Center of Intelligent Technology for Geo-Exploration Wuhan430074 China University of Liverpool Department of Electrical Engineering & Electronics LiverpoolL69 3GJ United Kingdom

ISBN: (数字)9781665480253

ISBN: (纸本)9781665480253

In the case of introducing the double integral state into the augmented vector, the time-varying delay square terms in the derivative of the Lyapunov-Krasovskii functional (LKF) usually needs to be treated with some negative-determination lemmas in the existing literatures, which are only sufficient conditions and are conservative to some extent. In this work, by introducing some new augmented variables, some zero-valued equations are proposed to avoid the appearance of these time-varying delay square terms, which have great potential to reduce the conservatism. Then, a stability result in terms of linear matrix inequalities is derived via the presented zero-valued equations. Finally, a representative example is provided to testify the usefulness and meliority of the raised stability criterion. © 2022 IEEE.

关键词： Additives

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