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Implementing Industry 4.0 in Discrete Manufacturing: Options and Drawbacks

IFAC-PapersOnLine 2018年第6期51卷 473-478页

作者： Arm, J. Zezulka, F. Bradac, Z. Marcon, P. Kaczmarczyk, V. Benesl, T. Schroeder, T. Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic Institute for Automation Engineering Faculty of Electrical Engineering and Information Technology Otto von Guericke University Magdeburg Germany

The Industry 4.0 concept embodies a topic widely discussed during specialized meetings and tutorials. Originally, this approach was interpreted as an attempt to shift industrial processes towards establishing the fully digitized smart factory; at present, however, it already exerts an influence on many other fields and disciplines. In this article, the concept is described from the perspective of discrete manufacturing. The implementation possibilities are outlined, with options such as the Asset Administrative Shell or Consumer-Provider model introduced in greater detail. We also mention some drawbacks to implementing job shop scheduling as provided by the latter option; these disadvantages include, for instance, the deadlock situation. Some methods to solve the problem are demonstrated to facilitate well-balanced presentation. A job shop scheduling algorithm using the AAS is also addressed, and a new evaluation function is proposed. © 2018

关键词： Job shop scheduling Industry 4.0 Optimization Scheduling algorithms deadlock decentralized Discrete manufacturing Distributed control Evaluation function Industrial processs Manufacturing plant Well balanced

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Dead-Time Compensator for State-delay Stable systems

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IFAC-PapersOnLine 2018年第18期51卷 672-677页

作者： Albertos, P. García, P. Chen, Q. Luan, X. Department of Systems Engineering Control Instituto de Automática e Informática Industrial Universitat Politècnica deValència Spain Key Laboratory of Advance Process Control for Light Industries Institute of Automation Jiangnan University China

This paper deals with the control of simple process models with state-delays. A pre-compensator is used to cancel the delay. Due to the cancellation of some terms, the process as well as its undelayed part should be stable. Although the approach is general, in order to simplify the notation, second order systems are considered to describe the procedure. The proposed methodology is applied to compensate the delay in a recycled reactor as well as to control a pure state-delayed academic example. © 2018

关键词： Process control Delay control systems Recycling control design Dead time compensator Dead time compensation Pre compensator Second order systemss Stable systems State delay Time delay systems

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An augmented regression model for tensors with missing values

arXiv

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arXiv 2020年

作者： Wang, Feng Gahrooei, Mostafa Reisi Zhong, Zhen Tang, Tao Shi, Jianjun State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing100044 China Department of Industrial and Systems Engineering University of Florida GainesvilleFL32611 United States H. Milton Stewart School of Industrial and Systems Engineering Georgia Institute of Technology AtlantaGA30332 United States

Heterogeneous but complementary sources of data provide an unprecedented opportunity for developing accurate statistical models of systems. Although the existing methods have shown promising results, they are mostly applicable to situations where the system output is measured in its complete form. In reality, however, it may not be feasible to obtain the complete output measurement of a system, which results in observations that contain missing values. This paper introduces a general framework that integrates tensor regression with tensor completion and proposes an efficient optimization framework that alternates between two steps for parameter estimation. Through multiple simulations and a case study, we evaluate the performance of the proposed method. The results indicate the superiority of the proposed method in comparison to a benchmark. Copyright © 2020, The Authors. All rights reserved.

关键词： Tensors

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Power Data Cleaning in Micro Grid

Power Data Cleaning in Micro Grid

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第三十八届中国控制会议

作者： Chunxi Li Haoyu Jiang Quanbo Ge Logistics Engineering College Shanghai Maritime University Research Institute of Automation Southeast University Hangzhou Zhongheng Provincial Key Enterprise Research Institute of PowerCloud Institute of Systems Science and Control Engineering School of Automation Hangzhou Dianzi University

Power data cleaning technology of micro grid is introduced in this paper. Firstly, an IOT data acquisition framework is concluded from practice and literature. Data anomalies are analyzed in the framework according to the data sources and business logics, and then these anomalies are divided into environmental exceptions that need to be cleaned and business exceptions that do not need to be cleaned. Secondly, the ADM data cleaning framework is given and under this framework the Singledimensional and information fusion methods which can extract additional information from time series data are ***, qualitative and quantitative evaluation criterion of the effectiveness in data cleaning are stated at last.

关键词： Data cleaning Data quality Outlier data detect Information fusion

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Co-firing of coal and biomass in oxy-fuel fluidized bed for CO2 capture: A review of recent advances

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Chinese Journal of Chemical engineering 2019年第10期27卷 2261-2272页

作者： Qinwen Liu Yan Shi Wenqi Zhong Aibing Yu Key Laboratory of Energy Thermal Conversion and Control of the Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China Center for Simulation and Modelling of Particulate Systems Southeast University-Monash University Joint Research InstituteSuzhou 215000China 3 ARC Research Hub for Computational Particle TechnologyDepartment of Chemical EngineeringMonash UniversityClaytonVIC 3800Australia

The co-firing of coal and biomass in oxy-fuel fluidized beds is one of the most promising technologies for capturing *** technology has attracted wide attention from academia and industry in recent years as a negative emission method to capture CO2 produced by carbon contained in *** the past decades,many studies have been carried out regarding experiments and numerical simulations under oxy-fuel combustion *** paper firstly briefly discusses the techno-economic viability of the biomass and coal co-firing with oxycombustion and then presents a review of recent advancements involving experimental research and computational fluid dynamics(CFD)simulations in this *** studies on mechanism research,such as thermogravimetric analysis and tube furnace experiments,and fluidized bed experiments based on oxy-fuel fluidized beds with different sizes as well as the main findings,are summarized as a part of this *** has been recognized that CFD is a useful approach for understanding the behaviors of the co-firing of coal and biomass in oxyfuel fluidized *** summarize a recent survey of published CFD research on oxy-fuel fluidized bed combustion,which categorized into Eulerian and Lagrangian ***,we discuss the challenges and interests for future research.

关键词： Oxy-fuel combustion Co-firing of coal and biomass Oxy-fuel fluidized bed CFD simulation

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Adaptive Prognosis for a Multi-component Dynamical System of Unknown Degradation Modes

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IFAC-PapersOnLine 2018年第24期51卷 184-191页

作者： Prakash, Om Samantaray, Arun K. Bhattacharyya, Ranjan Ghoshal, Sanjoy K. Systems Dynamics and Control laboratory Department of Mechanical Engineering Indian Institute of Technology Kharagpur721302 India Dhanbad826004 India

This article proposes an adaptive remaining useful life (RUL) prediction for a multi-component dynamical system of unknown degradation modes or profiles. Most of the existing approaches assume degradation occurrence in a single component with a single degradation mode for the simplification of RUL prediction. However, in such system, degradation of many components may occur simultaneously and those may show different unknown linear or nonlinear degradation behaviors in their life cycle. Practically, RUL prediction is complicated when the degradation information is unknown a priori and shows nonlinear behaviour. Thus, this article proposes to progressively obtain the degradation estimates of the components through estimation process after their detection and thus multiple degradation models are postulated on-the-fly using the estimates of the degradations. RULs are regularly updated through adaptive degradation models identified by using the concept of sliding window estimation technique. The proposed technique is demonstrated through simulation on a multi-component electrical system. This article also includes the accelerated ageing experimental result which strongly supports the concept of activation of different degradation modes of the component during its life cycle. © 2018

关键词： Life cycle Dynamical systems Forecasting Parameter estimation Degradation behavior Degradation model Multi component systems Multiple degradations Nonlinear behaviours Remaining useful life predictions Remaining useful lives unknown degradation modes

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The accuracy determination of landslide cone terrain mapping by the UAV photogrammetry in High Tatras 11

The accuracy determination of landslide cone terrain mapping...

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11th International Scientific and Technical Conference on Geodesy, Cartography and Geoinformatics, GCG 2019

作者： Štroner, M. Urban, R. Blišťan, P. Kovanič, L. Patera, M. Department of Special Geodesy Faculty of Civil Engineering CTU Prague Czech Republic Institute of Geodesy Cartography and Geographical Information Systems Faculty of Mining Ecology Process Control and Geotechnology TU Košice Slovakia

ISBN: (纸本)9780367346515

Mass data collection technologies are widely used today and allow very detailed capturing of virtually any objects, including the Earth’s surface, for example for monitoring changes. Increasingly, UAV photogrammetry is used not only in geodesy for this purpose, it provides significant advantages in the mapping of complex landslide-type objects compared to terrestrial surveying methods, including 3D scanning. The paper presents a test of the precision of the mapping of the surface of the stonefield landslide in the Little Cold Valley in the High Tatras made by UAV photogrammetry by comparing its results with the point cloud acquired by the Leica P40 terrestrial 3D scanner. The evaluation not only considers the accuracy of the result, but also compares the cost-effectiveness of the measurement as well as the cost of acquiring the necessary equipment. Measured terrain is very specific, rugged, it is formed by boulders of the size of meters over smaller stones to gravel and sand. The slope of the terrain is also extreme. Evaluating the cost-effectiveness and meticulousness of the measurement will stand out more than in normal situations, as the measurement took place in a national park where all equipment, devices and personal baggage need to be transported by human power. At the same time, the movement in the stone field is even more difficult. It has been found that the methods compared are practically equal in terms of precision, but drone photogrammetry is clearly better in terms of labor and economy. © 2020 Taylor & Francis Group, London.

关键词： Photogrammetry

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Methods for Measuring the Just Noticeable Difference for Variable Stimuli: Implications for Perception of Metabolic Rate with Exoskeleton Assistance

Methods for Measuring the Just Noticeable Difference for Var...

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IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob)

作者： Roberto L. Medrano Gray C. Thomas Elliott Rouse Department of Mechanical Engineering Robotics Institute University of Michigan Ann Arbor MI USA Neurobionics Lab University of Michigan Ann Arbor MI USA Neurobionics and Locomotor Control Systems Labs University of Michigan

ISBN: (数字)9781728159072

ISBN: (纸本)9781728159089

The reduction of metabolic rate has become a pillar for quantifying the success of exoskeletons for performance augmentation, but how well can humans perceive these metabolic benefits? Measuring human perceptual ability in this context presents a unique challenge, since the stimulus of metabolic rate is not directly controllable. In this paper we introduce and compare two methods for addressing indirect stimuli: conventional method of constant stimuli (MOCS) with binning, and single presentation (SP). Both methods are based on a maximum likelihood estimation for a sigmoidal psychometric curve, under the assumption of a constant Weber fraction. Using Monte Carlo simulations, we conclude that while conventional MOCS with binning performs better for low actuation noise levels, single presentation strategies are better otherwise. We additionally present a pilot result for one subject using the single presentation strategy, which quantified the Just Noticeable Difference (JND) of changes to metabolic rate of 25.2 ± 23.2%.

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The Capacitor Field Modelling by Comsol

The Capacitor Field Modelling by Comsol

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2019 IEEE International Conference on Modern Electrical and Energy systems, MEES 2019

作者： Špaldonová, Darina Mamchur, Dmytro Technical University of Košice Department of Theoretical and Industrial Electrical Engineering FEI Košice Slovakia Institute of Electromechanics Energy Saving and Control Systems Kremenchuk Mykhailo Ostrohradskyi National University Kremenchuk Ukraine

ISBN: (纸本)9781728125695

in the paper, the analysis of the capacitor electromagnetic field by means of program Comsol and comparison of obtained results with those ones obtained by the theoretical calculation based on the corresponding analytic expressions is presented. Study was done for two types of capacitor field: stationary one and frequency dependent one. For stationary fields, capacitor capacitance and total capacitor field energy are expressed and compared, for a frequency dependent field they are capacitor admittance and total capacitor field energy. © 2019 IEEE.

关键词： Numerical methods

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Tunable schiff-based networks with different bonding sites for enhanced photocatalytic activity under visible-light irradiation: The effects of steric hindrance

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Environmental research 2024年 246卷 118200页

作者： Han Wang Piao Xu Eydhah Almatrafi Ziwei Wang Chengyun Zhou Ting Xiong Hong Qin Yangzhuo He Hailan Yang Zhuotong Zeng Guangming Zeng School of Metallurgy and Environment Central South University Changsha 410083 China Department of Dermatology Second Xiangya Hospital Central South University Changsha 410011 China College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education) Hunan University Changsha 410082 China Center of Research Excellence in Renewable Energy and Power Systems Center of Excellence in Desalination Technology Department of Mechanical Engineering King Abdulaziz University Jeddah 21589 Saudi Arabia. College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education) Hunan University Changsha 410082 China. Institute of Big Data and Internet Innovation Hunan University of Technology and Business Changsha 410205 China. Center of Research Excellence in Renewable Energy and Power Systems Center of Excellence in Desalination Technology Department of Mechanical Engineering King Abdulaziz University Jeddah 21589 Saudi Arabia. Electronic address: zgming@***.

Organic polymers hold great potential in photocatalysis considering their low cost, structural tailorability, and well-controlled degree of conjugation for efficient electron transfer. Among the polymers, Schiff base networks (SNWs) with high nitrogen content have been noticed. Herein, a series of SNWs is synthesized based on the melamine units and dialdehydes with different bonding sites. The chemical and structural variation caused by steric hindrance as well as the related photoelectric properties of the SNW samples are investigated, along with the application exploration on photocatalytic degradation and energy production. The results demonstrate that only SNW-o based on o-phthalaldehyde responds to visible light, which extends to over 550 nm. SNW-o shows the highest tetracycline degradation rate of 0.02516 min, under 60-min visible light irradiation. Moreover, the HO production of SNW-o is 2.14 times higher than that of g-CN. The enhanced photocatalytic activity could be ascribed to the enlarged visible light adsorption and intramolecular electron transfer. This study indicates the possibility to regulate the optical and electrical properties of organic photocatalysts on a molecular level, providing an effective strategy for rational supramolecular engineering to the applications of organic materials in photocatalysis.

关键词： H(2)O(2) production Photocatalytic degradation Schiff-based networks Steric hindrance Structure tunability

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