检索结果-内蒙古大学图书馆

Mediterranean Conference on control and Automation (MED)

作者： Z. Szabó J. Bokor Institute for Computer Science and Control Hungarian Academy of Sciences Hungary Institute for Computer Science and Control MTA-BME Control Engineering Research Group Hungary

While sensors play an important role in the control loop, in practice they often are considered to be a part of the plant and the explicit interaction between the plant and sensor is disregarded in the further considerations. Based on an input/output perspective, this paper investigates the internal stability property of the control loop when this interface is considered explicitly. As a main result of the paper, we provide a Youla type characterization of all the sensors that renders the loop stable for a fixed plant and controller.

关键词： Sensitivity Feedback loop Stability criteria Optimization Linear systems Complexity theory Sensor fusion

来源：评论

学校读者我要写书评

暂无评论

The exponential stability of an unstable ODE with compensation of a heat equation through Neumann interconnections 34

The exponential stability of an unstable ODE with compensati...

引用

34th Chinese control Conference, CCC 2015

作者： Dong-Xia, Zhao Jun, Wang School of Science North University of China Taiyuan China School of Computer and Control Engineering North University of China Taiyuan China School of Electronics and Information Engineering Beijing Institute of Technology Beijing China

ISBN: (纸本)9789881563897

This paper addresses the feedback stabilization of a coupled heat-ODE system through the Neumann boundary interconnections, where the boundary heat flux vx(1, t) is fed into the ODE, while the velocity feedback of ODE is flowed into the boundary of heat equation, so a direct bi-directional feedback between the ODE and the heat equation is established. It is found that the dissipative damping is produced in the heat equation via the boundary connections only, and then the heat equation is considered as the controller of the whole system. Based on the semigroup approach and Riesz basis method, the well-posedess and exponential stability of the system are deduced. Finally, some numerical simulations are presented to show the differences and merits between delay compensator, heat PDE compensator via Dirichlet interconnections, and heat PDE compensator via Neumann interconnections. © 2015 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Boundary control Exponential stability Riesz basis Spectral analysis

来源：评论

学校读者我要写书评

暂无评论

Coordination of power injection in HVDC grids with multi-TSOs and large wind penetration 11

Coordination of power injection in HVDC grids with multi-TSO...

引用

11th IET International Conference on AC and DC Power Transmission

作者： Babazadeh, Davood Van Hertem, Dirk Rabbat, Michael Nordström, Lars Industrial Information and Control System Department School of Electrical Engineering KTH-Royal Institute of Technology Sweden Esat-Electa KU Leuven Belgium Department of Electrical and Computer Engineering McGill University Canada

ISBN: (纸本)9781849199827

This paper proposes different architectures for the coordination of power injection in interconnected hybrid AC/DC grids with Multi-TSO. The power dispatch problem is first formulated for the HVDC grid with the aim of keeping the balance in real time and try to follow the 15-min schedules introduced by AC TSOs considering the ongoing changes in the HVDC grid. Next, the Auxiliary Problem Principle (APP) method is proposed to decompose the dispatch problem and distributed between connected AC operators who control the local converters. Two different approaches are tested and the sensitivity of the OPF updating rate has been evaluated for a 5-area HVDC grid with the wind production.

关键词： Electric load flow

来源：评论

学校读者我要写书评

暂无评论

Reducing the Modeling Error by Observer Based PID Regulators for a Class of Factorable Nonlinear Plants

Reducing the Modeling Error by Observer Based PID Regulators...

引用

作者： Keviczky, L. Bányász, Cs. Institute of Computer Science and Automation MTA-BME Control Engineering Research Group Hungarian Academy of Sciences H-1111 Budapest Kende u 13-17 Hungary

A PID regulator tuning method is introduced for HAMMERSTEIN and WIENER type block-oriented cascade factorable nonlinear models. Then the YOULA-parameterization approach is discussed which allows to develop an observer... 详细信息

关键词： Proportional control systems

来源：评论

学校读者我要写书评

暂无评论

Blending for H∞ performance: a group theoretic approach

引用

IFAC-PapersOnLine 2015年第14期48卷 186-191页

作者： Z. Szabò J. Bokor F. Schipp Institute for Computer Science and Control Hungarian Academy of Sciences Budapest Kende u. 13-17 Hungary Institute for Computer Science and Control Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

In order to design efficient algorithms that work on the set of controllers that fulfill a given property, e.g., stability or a norm bound, it is important to have an operation that preserves that property, i.e., a suitable blending method. Concerning stability, a traditional approach is to use the Youla parametrization and the corresponding parameters as a starting point. While this method guarantees stabilizability as the invariant property for the fairly large class of strictly proper plants, there are also other solutions to the problem. The authors already provide a detailed analysis for feedback stability placing the controller blending problem in a general setting by pointing to the basic global geometric structures that are related to well-posedness and feedback stability. In this paper these efforts are continued and the group structure corresponding to performance problems, e.g., those related to a suboptimal H ∞ design, is presented. Besides its educative value the presentation provides a possible tool for the algorithmic development.

关键词： controller parametrisation controller blending performance guarantee

来源：评论

学校读者我要写书评

暂无评论

Construction of KAGRA: An underground gravitational wave observatory

arXiv

引用

arXiv 2017年

作者： Akutsu, T. Ando, M. Araki, S. Araya, A. Arima, T. Aritomi, N. Asada, H. Aso, Y. Atsuta, S. Awai, K. Baiotti, L. Barton, M.A. Chen, D. Cho, K. Craig, K. DeSalvo, R. Doi, K. Eda, K. Enomoto, Y. Flaminio, R. Fujibayashi, S. Fujii, Y. Fujimoto, M.-K. Fukushima, M. Furuhata, T. Hagiwara, A. Haino, S. Harita, S. Hasegawa, K. Hasegawa, M. Hashino, K. Hayama, K. Hirata, N. Hirose, E. Ikenoue, B. Inoue, Y. Ioka, K. Ishizaki, H. Itoh, Y. Jia, D. Kagawa, T. Kaji, T. Kajita, T. Kakizaki, M. Kakuhata, H. Kamiizumi, M. Kanbara, S. Kanda, N. Kanemura, S. Kaneyama, M. Kasuya, J. Kataoka, Y. Kawaguchi, K. Kawai, N. Kawamura, S. Kawazoe, F. Kim, C. Kim, J. Kim, J.C. Kim, W. Kimura, N. Kitaoka, Y. Kobayashi, K. Kojima, Y. Kokeyama, K. Komori, K. Kotake, K. Kubo, K. Kumar, R. Kume, T. Kuroda, K. Kuwahara, Y. Lee, H.-K. Lee, H.-W. Lin, C.-Y. Liu, Y. Majorana, E. Mano, S. Marchio, M. Matsui, T. Matsumoto, N. Matsushima, F. Michimura, Y. Mio, N. Miyakawa, O. Miyake, K. Miyamoto, A. Miyamoto, T. Miyo, K. Miyoki, S. Morii, W. Morisaki, S. Moriwaki, Y. Muraki, Y. Murakoshi, M. Musha, M. Nagano, K. Nagano, S. Nakamura, K. Nakamura, T. Nakano, H. Nakano, M. Nakano, M. Nakao, H. Nakao, K. Narikawa, T. Ni, W.-T. Nonomura, T. Obuchi, Y. Oh, J.J. Oh, S.-H. Ohashi, M. Ohishi, N. Ohkawa, M. Ohmae, N. Okino, K. Okutomi, K. Ono, K. Ono, Y. Oohara, K. Ota, S. Park, J. Peña Arellano, F.E. Pinto, I.M. Principe, M. Sago, N. Saijo, M. Saito, T. Saito, Y. Saitou, S. Sakai, K. Sakakibara, Y. Sasaki, Y. Sato, S. Sato, T. Sato, Y. Sekiguchi, T. Sekiguchi, Y. Shibata, M. Shiga, K. Shikano, Y. Shimoda, T. Shinkai, H. Shoda, A. Someya, N. Somiya, K. Son, E.J. Starecki, T. Suemasa, A. Sugimoto, Y. Susa, Y. Suwabe, H. Suzuki, T. Tachibana, Y. Tagoshi, H. Takada, S. Takahashi, H. Takahashi, R. Takamori, A. Takeda, H. Tanaka, H. Tanaka, K. Tanaka, T. Tatsumi, D. National Astronomical Observatory of Japan Tokyo181-8588 Japan Graduate School of Science University of Tokyo Tokyo113-0033 Japan Department of Physics Graduate School of Science University of Tokyo Tokyo113-0033 Japan Ibaraki305-0801 Japan Earthquake Research Institute University of Tokyo Tokyo113-0032 Japan Department of Physics Graduate School of Science Osaka City University Osaka558-8585 Japan Graduate School of Science and Technology Hirosaki University Aomori036-8561 Japan Department of Physics Graduate School of Science and Engineering Tokyo Institute of Technology Tokyo152-8551 Japan Institute for Cosmic Ray Research University of Tokyo Chiba277-8582 Japan Institute for Cosmic Ray Research University of Tokyo Gifu506-1205 Japan Graduate School of Science Osaka University Osaka560-0043 Japan Department of Physics Sogang University Seoul121-742 Korea Republic of University of Sannio at Benevento BeneventoI-82100 Italy Sezione di Napoli NapoliI-80126 Italy University of Toyama Toyama930-8555 Japan Department of Physics Graduate School of Science Kyoto University Kyoto606-8502 Japan Institute of Physics Academia Sinica Taipei11529 Taiwan University of Toyama Toyama930-8555 Japan Yukawa Institute for Theoretical Physics Kyoto University Kyoto606-8502 Japan Albert-Einstein-Institut Max-Planck-Institut für Gravitationsphysik HannoverD-30167 Germany Department of Physics and Astronomy Seoul National University Seoul151-742 Korea Republic of Daejeon34055 Korea Republic of Department of Physics Myongji University Yongin449-728 Korea Republic of Department of Computer Simulation Inje University Gimhae-shi50834 Korea Republic of Daejeon34047 Korea Republic of Department of Physical Science Graduate School of Science Hiroshima University Hiroshima903-0213 Japan Department of Applied Physics Graduate School of Science Fukuoka University Fukuoka814-0180 Japan Graduate School of Science and Engineer

Major construction and initial-phase operation of a second-generation gravitational-wave detector KAGRA has been completed. The entire 3-km detector is installed underground in a mine in order to be isolated from background seismic vibrations on the surface. This allows us to achieve a good sensitivity at low frequencies and high stability of the detector. Bare-bones equipment for the interferometer operation has been installed and the first test run was accomplished in March and April of 2016 with a rather simple configuration. The initial configuration of KAGRA is named iKAGRA. In this paper, we summarize the construction of KAGRA, including the study of the advantages and challenges of building an underground detector and the operation of the iKAGRA interferometer together with the geophysics interferometer that has been constructed in the same tunnel. Copyright © 2017, The Authors. All rights reserved.

关键词： Interferometers

来源：评论

学校读者我要写书评

暂无评论

Propagation of I0-Bessel correlated beams carrying orbital angular momentum in weak atmospheric turbulence

Propagation of I0-Bessel correlated beams carrying orbital a...

引用

Propagation Through and Characterization of Atmospheric and Oceanic Phenomena, pcAOP 2019

作者： Avramov-Zamurovic, Svetlana Nelson, Charles Korotkova, Olga Hyde, Milo Weapons Robotics and Control Engineering Department United States Naval Academy United States Computer Engineering Department United States Naval Academy United States Physics Department University of Miami United States Air Force Institute of Technology Department of Electrical and Computer Engineering United States

ISBN: (纸本)9781943580637

The scintillation index of the I0-Bessel-correlated beams generated as temporally incoherent superposition of Laguerre-Gaussian modes with different coherence states and different values of the Orbital Angular Momentum (OAM) index on propagation in atmospheric turbulence is reported. The scintillation index is shown to decrease with the increase in the OAM index. © 2015 Optics InfoBase Conference Papers. All rights reserved.

关键词： Atmospheric turbulence

来源：评论

学校读者我要写书评

暂无评论

controller blending - a geometric approach

Controller blending - a geometric approach

引用

European control Conference

作者： Z. Szabo J. Bokor Institute for Computer Science and Control Hungarian Academy of Sciences Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group

ISBN: (纸本)9781467371605

In order to design efficient algorithms that work on the set of controllers that fulfill a given property, e.g., stability or a norm bound, it is important to have an operation that preserves that property, i.e., a suitable blending method. While available approaches use the Youla parameters in order to define this operation for stability in a trivial way, they do not provide a general answer to the problem. This paper places the controller blending problem in a more general setting by pointing to the basic global geometric structures that are related to feedback stability or suboptimal H_∞ design. A detailed analysis is given for feedback stability: an operation is given under which well-posedness is a group while stability is a semigroup. Moreover, an operation is given that makes controllers with strongly stable property a group.

关键词： Geometry Stability analysis Aerospace electronics Transforms Algebra control theory Feedback loop

来源：评论

学校读者我要写书评

暂无评论

Functional-reliability model of a services system with path reconfiguration ability

Advances in Intelligent Systems and Computing

引用

Advances in Intelligent Systems and Computing 2015年 307卷 167-187页

作者： Zamojski, Wojciech Sugier, Jaroslaw Wroclaw University of Technology Poland Institute of Computer Engineering Control and Robotics Wroclaw Poland

In this work we analyse operation of a services network which is built from processing nodes serving dedicated services and communication links transmitting required information resources. For task executions specific subsets of network resources – so called communication paths – are allocated. Execution of a task in communication paths is disrupted by occurring faults which are eliminated by renewal procedures leading to delays in task completion time or even to task cancellation. One of the method for overcoming the negative effects of the faults is to apply a path reconfiguration mechanism i.e. a redirection of the communication traffic which bypasses the damaged link. We propose a functional-reliability dependability model of the services network which takes into account possible path reconfigurations. We also define a network dependability parameter which evaluates network efficiency by finding the degree of task losses among all the jobs being executed in the network. © Springer International Publishing Switzerland 2015

关键词： computers

来源：评论

学校读者我要写书评

暂无评论

A Wirebond-less Package for High Voltage Cascode Gallium Nitride Devices

A Wirebond-less Package for High Voltage Cascode Gallium Nit...

引用

IEEE Electronic Components and Technology Conference

作者： Wenli Zhang Zhengyang Liu Fred C. Lee Shuojie She Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA College of Electronic Information and Control Engineering Beijing University of Technology Beijing China

The rapid development of gallium nitride (GaN)-based wide bandgap power devices has been stirring power electronics industry for almost a decade. Advanced packaging solutions are eagerly needed to exploit the maximum potential of the high performance GaN semiconductors. Especially for devices in the cascode configuration, the design and fabrication of a suitable package are very challenging for high-frequency, high-efficiency applications. In this study a new wirebond-less package has been developed for a 650 V, cascode GaN device to address the parasitics and reliability concerns induced by the bonding wires used in the conventional package. The simulated junction-to-case thermal performance and measured switching characteristics for GaN device packaged in this new format are reported and compared with the device in the previously developed stack-die package. This wirebond-less package demonstrates a lower thermal resistance than most of the packages used for commercial power GaN devices. And its footprint/size is smaller than the state-of-the-art packaging format utilized for silicon-based power devices.

关键词： Cascode configuration Gallium nitride (GaN) Thermal analysis Wirebond-less package

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：