检索结果-内蒙古大学图书馆

International Scientific Conference on Electric Power engineering (EPE)

作者： Miroslaw Wcislik Michal S. Laskawski Faculty of Electric Engineering Automatic Control and Computer Science Kielce University of Technology Kielce Poland

ISBN: (纸本)9781509064076

The paper deals with an analysis of features of on-off controllers. It was assumed that the control quality can be described by three distinctive indexes: the period, the amplitude and the mean value of the controlled signal in the steady state. The on-off controller with positive hysteresis was a basic form of the controller that was analyzed. To eliminate the disadvantages of this basic form the controller structure was augmented by inertia corrector. Its impact on mentioned above indicators was shown and described. To compensate the negative influence of inertia corrector on the mean value of the controlled signal, an additional proportional corrector was proposed. Its influence on control quality was shown and discussed. To show how easy it is to build the proposed structure of the controller, its exemplary implementation in the ladder logic language of the S7-1200 PLC was described.

关键词： control systems Hysteresis Steady-state Oscillators Mathematical model Software packages Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Chaotic behavior of new nonlinear electromagnetic microgenerator harvesting energy from mechanical vibrations

Chaotic behavior of new nonlinear electromagnetic microgener...

引用

International Symposium on Electrical Machines (SME)

作者： Mariusz Jagieła Marcin Kulik Faculty of Electrical Engineering Automatic Control & Computer Science Opole University of Technology Opole Poland

A low-frequency nonlinear cantilever-beam-type electromagnetic vibration energy harvester is analyzed. The nonlinearity brought into system kinematics by the “magnets-on-magnets” action provides approximately 20 Hz frequency bandwidth. A simulation study based on solution of coupled dynamic equations of motion and equation of electric balance shows that within major part of the bandwidth the system is capable to produces the voltage with magnitude proportional to magnitude and frequency of the excitation force. At very low frequency and large external forces it falls, however into region where it exhibits chaotic behavior. In this paper the impact of the phenomenon on waveform of the generated voltage is analyzed using the Poincare maps and spectrograms. The results prove a detrimental impact of the phenomenon on overall performance of the system. In order to avoid the chaotic operation the impact of the hard-stop barriers of relative displacement is analyzed showing rise of generated power and reduction of a low-frequency limit of the bandwidth.

关键词： Magnetic flux Force Magnetic resonance Magnetic hysteresis Magnetic cores Coils Magnetic circuits

来源：评论

学校读者我要写书评

暂无评论

Sensorless nonlinear control of fed-batch Escherichia coli cultivation bioprocess using the state-dependent approach 12th

引用

12th Portuguese Conference on automatic control, controlO 2016

作者： Iratni, Abdelhamid Araújo, Rui Rastegar, Saeid Mostefai, Mohammed Faculty of Science and Technology Electrical Engineering Department University of Bordj Bou Arreridj El Anasser Algeria Department of Electrical and Computer Engineering Institute for Systems and Robotics University of Coimbra Coimbra Portugal Automatic Control Laboratory of Setif Electrical Engineering Department Faculty of Technology University of Setif1 Sétif Algeria

ISBN: (纸本)9783319436708

The cultivation of Escherichia coli bacteria is widely used by geneticists and biopharmaceuticals to produce medicines and vaccines. In such industries, Bioprocesses are known by their harsh environment and very expensive physical sensors. This paper deals with nonlinear estimation and control of fed-batch Escherichia coli bioprocess. Enhancing the process performance and maximizing its efficiency by optimizing the control of Escherichia coli cultures depends on the availability of appropriate online sensors for the main culture components. In this study, an innovative method for nonlinear estimation and control of bioprocesses is designed and assessed. The new algorithm for control and estimation of Escherichia coli bioprocess states, based on the State-Dependent Riccati Equation technique, is validated by numerical simulation. The results obtained clearly demonstrate the effectiveness of the proposed technique for Biosystems in measuring, monitoring, and control of their natural nonlinear dynamics. © Springer International Publishing Switzerland 2017.

关键词： Extended Kalman filters

来源：评论

学校读者我要写书评

暂无评论

Assessment of the Energy Characteristic of the Terrace House

引用

IOP Conference Series: Materials Science and engineering 2019年第5期471卷

作者： Urszula Pawlak Marcin Pawlak Department of Mechanics Metal Structures and Computer Methods Faculty of Civil and Architecture Kielce University of Technology al. 1000-lecia Państwa Polskiego 7 25-314 Kielce Poland Department of Power Engineering Electronics Faculty of Electrical Engineering Automatic Control and Computer Kielce University of Technology al. 1000-lecia Państwa Polskiego 7 25-314 Kielce Poland

In the article, the energy characteristics of a terraced house located in Kielce were assessed. The analyzed house was put into use in 1982. Due to the old manufacturing technology, mainly in the area of the materials used, to limit significant heat losses, it has been thermally renewed many times. The aim of the calculations was to indicate the financial benefits, in example to reduce the costs of maintaining the house and to provide its residents with the proper comfort of use of the building, also taking into account the health aspects. The analysis of the object was made in several stages. Proposed are changes reducing the demand for non-renewable primary energy Ep, using modern thermal insulation materials, joinery with low heat transfer coefficient and renewable energy sources. As a result, an energy-efficient building that meets WT 2017 was obtained. The annual demand for non-renewable primary energy EP was determined using the Certo 2015 program in educational version 1.3.3.0.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Evaluating the effect of voting methods on ensemble-based classification

Evaluating the effect of voting methods on ensemble-based cl...

引用

IEEE International Symposium on Innovations in Intelligent Systems and Applications (INISTA)

作者： Florin Leon Sabina-Adriana Floria Costin Bădică Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania Faculty of Automatics University of Craiova Craiova Romania

Bagging is a popular method used to increase the accuracy of classification, by training a set of classifiers on slightly different datasets and aggregating their output by voting. Usually, the majority voting is used for this purpose, or the plurality voting, when the problem has multiple class values. In this study, we analyze the influence of several voting methods on the performance of two classification algorithms used for datasets with different levels of difficulty. The results reveal that the single transferable vote can be a good alternative to plurality voting, although it has the drawback of a higher computational cost related to the calculation of preference ordering.

关键词： Bagging Training Classification algorithms Decision trees Standards Error analysis

来源：评论

学校读者我要写书评

暂无评论

Construction of the electromagnetic mill with the grinding system, classification of crushed minerals and the control system

引用

IFAC-PapersOnLine 2016年第20期49卷 67-71页

作者： Wolosiewicz-Glb, Marta Ogonowski, Szymon Foszcz, Dariusz AGH University of Science and Technology in Cracow Faculty of Mining and Geoengineering Department of Environmental Engineering and Mineral Processing United States Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Automatic Control Poland

The article presents the construction of an innovative electromagnetic mill, which in comparison to traditional solutions provide a significant reduction of energy consumption and higher technological performance. The device is equipped with a control system, measuring grinding quality or analyzing the operating status of the mill. Direct control of the grinding process is implemented in industrial controllers (PLC) and is supported by the optimization algorithms that run in the supervisory control system (SCADA). © 2016

关键词： Quality control

来源：评论

学校读者我要写书评

暂无评论

USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solutions to Improve Patient Imaging Availability and Noninvasive Diagnosis

USMED and Surgery Assist: IMAGO MOL Cluster Biomedical Solut...

引用

E-Health and Bioengineering Conference (EHB)

作者： Vlad Ghizdovat Lucian Nita Paul Herghelegiu Simona Caraiman Alina Capitanu Carmeni Mihai Cati Stolniceanu Jalloul Wael Delia Ciobanu Lidia Ionescu Irena-Cristina Grierosu Cipriana Stefanescu Biophysics Dept. “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania SC ROMSOFT SRL Iasi Romania Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania North East RDA Piatra Neamt Romania Imago-Mol Cluster Iaşi Romania “Sf. Spiridon” Emergency County Hospital Nuclear Medicine Laboratory Iasi Romania Department of Pathology “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania 3rd Surgery Department “Sf. Spiridon” Emergency County Hospital Iasi Romania Imago Mol Cluster “Grigore T. Popa” University of Medicine and Pharmacy Iaşi Romania

For patient well-being and also for cost efficiency, constantly improving the medical act is essential. All patients undergo a set of medical tests before going into surgery. In some cases, these tests have to be repeated in different hospitals due to the lack of a system that facilitates presenting and sharing patient's data. We present two e-Health solutions for hospitals and clinics in the medical data field. Our aim was to design and implement a unique system for medical data management. This system allows easy data transfer between medical facilities. It also improves the medical diagnostic and treatment process and it increases the quality of medical care. Also, it improves the communication between patients and physicians, decreases the duration and costs of hospitalization and improves the patient's quality of life. The second medical solution presented in this paper present the results of the medical tests directly to a screen in the operating room, further reducing the time a patient has to wait before going into surgery and also improving the medical act. Both medical solutions were tested in real-world scenarios with promising results.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Symmetrical T-network with fractional order elements 16

Symmetrical T-network with fractional order elements

引用

16th International Conference on Environment and Electrical engineering, EEEIC 2016

作者： Wlodarczyk, Maciej Szczepaniak, Jaroslaw Faculty of Electrical Engineering Automatic Control and Computer Science Kielce University of Technology Kielce Poland

The paper presents a symmetrical T-network utilizing fractional order elements. Fractional calculus was used for its modeling. A comparative analysis of a classic T-network and fractional order T-network step response... 详细信息

ISBN: (纸本)9781509023196

关键词： Calculations

来源：评论

学校读者我要写书评

暂无评论

Cost-benefit analysis game for efficient storage allocation in cloud-centric Internet of Things systems: A game theoretic perspective 15

Cost-benefit analysis game for efficient storage allocation ...

引用

15th IFIP/IEEE International Symposium on Integrated Network and Service Management, IM 2017

作者： Skourletopoulos, Georgios Mavromoustakis, Constandinos X. Mastorakis, George Sahalos, John N. Batalla, Jordi Mongay Dobre, Ciprian Department of Computer Science University of Nicosia Nicosia Cyprus Department of Informatics Engineering Technological Educational Institute of Crete Heraklion Crete Greece Department of Physics Aristotle University of Thessaloniki Thessaloniki Greece National Institute of Telecommunications and Warsaw University of Technology Szachowa Str. 1 and Nowowiejska Str. 15/19 Warsaw Poland Department of Computer Science and Engineering Faculty of Automatic Control and Computers University Politehnica of Bucharest Bucharest Romania

ISBN: (纸本)9783901882890

The advances in Internet of Everything (IoE) and the market-oriented cloud computing have provided opportunities to resolve the challenges caused by the Internet of Things (IoT) infrastructure virtualization, capacity planning, data storage or complexity. The volume and types of IoT data motivate the need for a data storage framework towards the integration of both structured and unstructured data. In this paper, we propose a novel game theoretic technique for efficient and dynamic storage allocation in cloud-centric IoT systems. The benefit maximization problem is formulated as a cost-benefit analysis game investigating the storage capacity currently used in the cloud. In view of each player's strategy to lease additional storage capacity, the game property is analyzed and we prove that the game always admits a pure strategy Nash equilibrium. Since the player's decision affects the level of benefit maximization, we elaborate on a cost-optimal storage allocation incentive mechanism, which scales effectively once non-linear or linear demand for storage capacity occurs, towards achieving optimal leasing conditions on cloud storage and computing capacity level. The experimental validation tests prove the effectiveness of the proposed game theoretic approach allocating the requests for more storage capacity in a cost-effective manner, which achieves to maximize the benefits. © 2017 IFIP.

关键词： Distributed cloud

来源：评论

学校读者我要写书评

暂无评论

Design and initial study of porous core electromagnet for levitation applications

引用

AIP Conference Proceedings 2018年第1期2029卷

作者： Adam Piłat Bartosz Sikora 1AGH University of Science and Technology Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Department of Automatic Control and Robotics Mickiewicza 30 30-059 Krakow Poland

A concept of the porous core electromagnet is studied. The form for the electromagnet core was printed using 3D technique. The core was manufactured manually using iron filings and cured in room temperature and air pressure. The aim of this paper is to deliver initial analysis of the proposed powder core together with the modelling procedure by the using finite element method, and to compare the experimental results of the manually manufactured electromagnet. The material property of the numerical model was adjusted to fit the experimental results. Finally, the electromagnet was tested in the levitation real–time experiment.

关键词：

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：