检索结果-内蒙古大学图书馆

Scheduling for Re-entrant Hybrid Flowshop Based on Wolf Pack Algorithm

IOP Conference Series: Materials Science and Engineering 2018年第3期382卷

作者： Zhonghua Han Xutian Tian Xiaofu Ma Shuo Lin Faculty of Information and Control Engineering Shenyang Jianzhu University Liaoning 110168 China Digital Factory Department Shenyang Institute of Automation CAS Shenyang 110016 China Information & Control Engineering Faculty Shenyang Jianzhu University Liaoning 110168 China Department of Electrical and Computer Engineering Virginia Tech Blacksburg VA USA 24060

In order to solve the scheduling problems of Re-entrant Hybrid Flowshop (RHFS), this paper investigates the mathematical programming model of RHFS, and proposes the wolf pack based algorithm (WPA) as a global optimization method. Multi-Sticking Crape Masking procedure scheduling problems in painting workshop of a bus manufacturing enterprise are of typical features of RHFS. We regard it as an application objective of the proposed algorithm, applying WPA and multiple evolutionary algorithms to solve the problems. The results show that the algorithm can solve re-entrant scheduling problems of hybrid flowshop more effectively compared with other conventional methods.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Distributed Multi-agent-based Architecture for Users Authentication System

The Distributed Multi-agent-based Architecture for Users Aut...

引用

International Conference on Systems Informatics, Modelling and Simulation (SIMS)

作者： Aleksandrs Kovalcuks Riga Technical University Institute of Computer Control Automation and Computer Engineering Riga Latvia

ISBN: (纸本)9781509026944

Article describes the architecture design of user authentication system. The key features of architecture is resistance to changes in architectural and infrastructural scopes. That allows to control the functionality of the system and gives possibility to change it without special knowledge and the additional costs, to implement better support for devices from different manufactures. In addition, it allows to create different services based on available authentication functionality, for example: detection of criminals using face or voice recognition functions, authorize public transport ticket just by looking though camera. Commonly, there are many different scenarios where presented architecture can be used.

关键词： Authentication computer architecture Hardware Protocols computers TCPIP Concrete

来源：评论

学校读者我要写书评

暂无评论

Electromagnetic compatibility tests of a measuring system based on MFC piezoelectric transducers

引用

IOP Conference Series: Materials Science and Engineering 2018年第2期400卷

作者： M Placzek M Mackowski Silesian University of Technology Faculty of Mechanical Engineering Institute of Engineering Processes Automation and Integrated Manufacturing Systems Konarskiego 18A 44-100 Gliwice Poland Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Informatics Akademicka 16 44-100 Gliwice Poland

This paper discusses the issue of dependability of a measuring system from the electromagnetic compatibility (EMC) point of view. During the tests, the equipment for conducting electromagnetic compatibility tests was used. The tests were carried out in accordance with the EMC Directive 2014/30/EU and the harmonized standard IEC 61000-4-6. The measuring system equipped with non-classical piezoelectric transducers called MFC was considered. The MFC transducer was used as a sensor connected to the NI 9191 CompactDAQ Chassis. During the research, the influence of conducted disturbances on the transmission wire was examined. One of the elements of the test bench was an EM-clamp (providing both inductive and capacitive coupling) consisting of a tube of split ferrite rings of two different grades, which can be clamped over the cable under test in a non-invasive way.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Integrating semi-supervised label propagation and random forests for multi-atlas based hippocampus segmentation

arXiv

引用

arXiv 2017年

作者： Zheng, Qiang Fan, Yong Department of Radiology Perelman School of Medicine University of Pennsylvania PhiladelphiaPA19104 United States School of Computer and Control Engineering Yantai University Yantai264005 China National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing100190 China

A novel multi-atlas based image segmentation method is proposed by integrating a semi-supervised label propagation method and a supervised random forests method in a pattern recognition based label fusion framework. The semi-supervised label propagation method takes into consideration local and global image appearance of images to be segmented and segments the images by propagating reliable segmentation results obtained by the supervised random forests method. Particularly, the random forests method is used to train a regression model based on image patches of atlas images for each voxel of the images to be segmented. The regression model is used to obtain reliable segmentation results to guide the label propagation for the segmentation. The proposed method has been compared with state-of-the-art multi-atlas based image segmentation methods for segmenting the hippocampus in MR images. The experiment results have demonstrated that our method obtained superior segmentation performance. Copyright © 2017, The Authors. All rights reserved.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

A design method for plug-and-play control of large-scale systems with a varying number of subsystems

A design method for plug-and-play control of large-scale sys...

引用

American control Conference

作者： Sven Bodenburg Viktor Kraus Jan Lunze Institute of Automation and Computer Control Ruhr-University Bochum 44780 Germany

ISBN: (纸本)9781467386838

This paper presents an online procedure to design decentralised controllers for a large-scale system when subsystems are added or removed. As the dynamics of all subsystems depend upon each other through the physical couplings, the main challenge of the controller design is to ensure global I/O stability and a required I/O performance of the overall large-scale system. For this purpose, plug-and-play control is devoted to the following two issues: first, the set-up of a model to describe the global system behaviour by limited model information only. Second, the design of the control station of the added subsystem based on this model with respect to local design requirements in order to guarantee the satisfaction of global system specifications. Furthermore, it is allowed to adjust neighbouring control stations to ensure a good overall system performance neighbouring subsystems are allowed to adjust their control stations. As a consequence, a new subsystem can be "plugged-in" and automatically "plays" together with the existing subsystems to guarantee a global performance. The overall procedure is experimentally evaluated by application to a thermo-fluid plant.

关键词： Silicon Mathematical model Large-scale systems Transfer functions control systems Design methodology Stability analysis

来源：评论

学校读者我要写书评

暂无评论

A method for the synchronisation of networked discrete-event systems

A method for the synchronisation of networked discrete-event...

引用

International Workshop on Discrete Event Systems, WODES

作者： Markus Zgorzelski Jan Lunze Institute of Automation and Computer Control Ruhr-Universität Bochum Germany

This paper describes networked discrete-event systems as a set of controlled subsystems, which are physically and digitally connected. The controlled subsystems have two operation modes: In the autonomous mode they achieve local tasks independently of each other, whereas in the synchronisation mode they perform given tasks synchronously by using communication. The paper proposes to model the networked discrete-event system by an Input/Ouput (I/O) automata network and gives a method for partial cooperation between the controlled subsystems. A tracking control architecture, which has been previously published for centralized systems, is extended to cope with the physical interconnections and the digital communications with other controllers. It is proved that the resulting networked tracking controller guarantees autonomous and partially cooperative behaviour. These results are demonstrated by means of an example featuring a flexible manufacturing system.

关键词： Discrete-event systems Couplings Synchronization Automata Digital communication Communication networks

来源：评论

学校读者我要写书评

暂无评论

Cooperative reconfiguration of locally interconnected systems with limited model information: A plug-and-play approach

Cooperative reconfiguration of locally interconnected system...

引用

European control Conference (ECC)

作者： Sven Bodenburg Jan Lunze Institute of Automation and Computer Control Ruhr-University Bochum Bochum Germany

This paper proposes a cooperative reconfiguration approach after faults have occurred in a locally interconnected system. Although the impact of the fault has effects to all other subsystems through the physical couplings, only the control station of the faulty subsystem should be reconfigured together with neighbouring control stations. The focus of this paper is on the organisation of the reconfiguration process without a central coordinator. Design agents exist for every subsystem which store the model of the respective subsystem. A local search algorithm is presented for the design agent of the faulty subsystem to find supportive design agents and to procure their local models to set-up an adequate model describing the faulty subsystem under the influence of the physical interactions. Furthermore, cooperative reconfiguration conditions are proposed to recover the global performance by the reconfiguration of the assigned control stations based on the limited model information. As a consequence, after the “plug-in” of the control stations into the hardware they “play” together to cooperatively act against the fault. This plug-and-play reconfiguration method is applied to a multizone furnace.

关键词： Silicon Algorithm design and analysis Couplings Interconnected systems Upper bound Furnaces Stability analysis

来源：评论

学校读者我要写书评

暂无评论

Self-organizing distributed control with situation-dependent communication

Self-organizing distributed control with situation-dependent...

引用

European control Conference (ECC)

作者： René Schuh Jan Lunze Institute of Automation and Computer Control Ruhr-University Bochum Bochum Germany

This paper proposes a new distributed control strategy for physically interconnected systems that adapts its communication structure at runtime to the current situation of the subsystems. The subsystems are permanently controlled by a decentralized feedback. Additionally, the local control units compute control inputs to other subsystems. To reduce the load of the network, control inputs are only transmitted to other local control units, while they are above given thresholds. Thus, the communication structure is adjusted to the currently acting disturbances. It is proven that the networked controller leads to a practically stable closed-loop system and that the deviation of its behavior to the behavior of a centralized control system can be bounded by an appropriate choice of the thresholds for the communication activation. Furthermore, a condition for designing the thresholds for the communication activation to guarantee a desired performance is given. The approach is demonstrated by its application to a thermofluid process.

关键词： Centralized control Couplings Networked control systems Switches Decentralized control Closed loop systems

来源：评论

学校读者我要写书评

暂无评论

Tracking control of deterministic I/O automata

Tracking control of deterministic I/O automata

引用

International Workshop on Discrete Event Systems, WODES

作者： Melanie Schuh Jan Lunze Institute of Automation and Computer Control Ruhr-Universität Bochum Germany

A tracking control framework for plants modeled by deterministic I/O automata is presented. The control aim is to steer the plant into a desired final state while at the same time guaranteeing its adherence to some safety constraints. It is proposed to control the plant by a tracking controller which consists of a trajectory planning unit and a controller. The trajectory planning unit searches for a reference trajectory that leads to the desired final state and avoids illegal transitions corresponding to safety constraints. The controller, which is modeled by a deterministic I/O automaton, steers the plant along this reference trajectory. It is proved that the plant in the closed-loop system with the proposed tracking controller always fulfills the given control aim, if it is controllable, that is, if there exists a path leading to the desired final state in the automaton graph of the plant without the illegal transitions.

关键词： Automata Trajectory controllability Safety Planning Closed loop systems Tracking

来源：评论

学校读者我要写书评

暂无评论

Plug-and-play diagnosis of locally interconnected systems with limited model information

Plug-and-play diagnosis of locally interconnected systems wi...

引用

Conference on control and Fault-Tolerant Systems (SysTol)

作者： Sven Bodenburg Jan Lunze Institute of Automation and Computer Control Ruhr-University Bochum Bochum Germany

ISBN: (纸本)9781509006595

This paper proposes a novel method to organise the design of a diagnostic unit that should detect faults in a decentralised controlled interconnected system. A fault at a subsystem should be detected by a local model-based diagnostic unit that only evaluates the local signals of the faulty subsystem. The focus of this paper is on the organisation of the design process of the diagnostic unit without a central coordinator. Design agents exist for each of the subsystems which store the subsystem model. A local algorithm is presented to gather models from neighbouring design agents with the aim to set-up a model which describes the behaviour of the faulty subsystem used by the diagnostic unit. Based on a proposed detectability condition the amount of model information is determined in order to guarantee the detection of the fault. As a consequence, with the plug-in of the diagnostic unit into the control hardware, the detection of the fault is ensured. The proposed plug-and-play diagnosis is applied to a multizone furnace.

关键词： Silicon Interconnected systems Fault tolerance Fault tolerant systems Couplings control systems Furnaces

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：