检索结果-内蒙古大学图书馆

IEEE Conference on Decision and control

作者： N.P. Rubin D.J.N. Limebeer Process Systems Engineering Control Group Imperial College London London UK

Some preliminary results are presented on a new method of identification for discrete time linear systems. The method is required to operate on experimentally determined, noisy frequency response data and is specifically required to yield a model which facilitates the design of robust controllers in the infinity norm. The philosophy underlying this method is not only to provide a robust identification algorithm but more importantly to emphasize minimization of the error bound between the true plant and the model. It is the reduction of this bound that allows improved performance to be obtained by the closed loop system when controlled by an H/sup infinity / controller. The bound of this new method is computable from the a priori information of the plant's relative stability properties and the noise's bound as well as the a posteriori information of the plant's noisy frequency response. The plant transfer function must be in the class of stable, causal, time invariant linear systems. The best method obtained to data is presented, and it is shown that its theoretical error bounds are smaller than those of other methods in the literature. Theoretical examples are included to demonstrate the method's performance.< >

关键词： System identification Linear systems Frequency response control systems Robust control H infinity control Robustness Minimization methods Closed loop systems Stability

来源：评论

学校读者我要写书评

暂无评论

Stability and Convergence of Mechanical systems with Unilateral Constraints 1

引用

丛书名： Lecture Notes in Applied and Computational Mechanics

1000年

作者： Remco I. Leine Nathan van de Wouw

来源：评论

学校读者我要写书评

暂无评论

process control Principles for Scalable Electrolysis systems

Process Control Principles for Scalable Electrolysis Systems

引用

International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Julius Lorenz Anselm Klose Hannes Lange Tobias Kock Leon Urbas Chair of Process Control Systems TUD Dresden University of Technology Dresden Germany Process to Order Lab TUD Dresden University of Technology Dresden Germany Process Systems Engineering Group TUD Dresden University of Technology Dresden Germany

The scale up of hydrogen production to large scale production systems demands a structured approach to control these systems. With suitable control principles, optimization for operation can be achieved whilst maintaining flexibility. In this paper, existing control strategies are analyzed and compared for large scale electrolysis systems. It is argued, how modularization can enable the optimal distribution of set-points and enables the systems for capacity extension. An initial implementation in MATLAB is presented, showing the feasibility of the proposed power distribution concept.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Flexible process control for Scalable Electrolysis systems

Flexible Process Control for Scalable Electrolysis Systems

引用

Electrical, Computer and Energy Technologies (ICECET), International Conference on

Large-scale water electrolysis systems are built from a multitude of stack units. These stack units have to be controlled during operation. The question arises how process control of the system can be designed in that way, that scalable, extendable but also optimal operation of the stack units becomes possible. To achieve this goal, existing process control strategies from literature are analyzed. The requirements resulting from the inherent numbering up of stack units are described and an approach for an adaptable optimized process control strategy considering the system properties is proposed. The proposed process control strategy is implemented in a modeled electrolysis system and evaluated regarding the stated criteria. The results could show, that the inherent modularization of electrolysis systems can be used in advantage for a scalable operation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Tuning PI controllers based on ∞ Weighted Sensitivity

Tuning PI controllers based on ∞ Weighted Sensitivity

引用

2011 19th Mediterranean Conference on control and Automation, MED 2011

作者： Alcántara, S. Skogestad, S. Grimholt, C. Pedret, C. Vilanova, R. Department of Telecommunications and Systems Engineering Universitat Autònoma de Barcelona 08193 Cerdanyola Barcelona Spain Department of Chemical Engineering Process Control Group Norwegian University of Science and Technology N-7491 Trondheim Norway

ISBN: (纸本)9781457701252

H∞ control theory is usually associated with highorder controllers. In this paper, simple tuning rules (extending the well-known SIMC) for the Proportional-Integral (PI) algorithm are derived analytically based on H∞ Weighted Sensitivity. The presented approach deals with stable, integrating and unstable plants in a unified way, avoiding any notion of coprime factorization. The final tuning involves two adjustable parameters, λ and υ with clear engineering meaning: λ selects the Robustness/Performance compromise, whereas υ allows to balance the Servo/Regulator performance. Based on this, several application scenarios are considered. First, a One-Degree-Of-Freedom (1-DOF) PI controller is assumed. Second, 2-DOF and switched implementations are investigated. © 2011 IEEE.

关键词： Degrees of freedom (mechanics)

来源：评论

学校读者我要写书评

暂无评论

Guest Editorial for Special Issue on Cyber-Physical systems

引用

IEEE/CAA Journal of Automatica Sinica 2015年第3期2卷 233-234页

作者： Youxian Sun Xinping Guan Jiming Chen Yilin Mo Zhejiang University the Chinese Academy of Engineering the Institute of Industrial Process Control and the National Engineering Research Center of Industrial Automation Zhejiang University Department of Automation Shanghai Jiao Tong University University Research Management Office Shanghai Jiao Tong University the Key Laboratory of Systems Control and Information Processing Ministry of Education of China the prestigious Innovative Research Team of the National Natural Science Foundation of China(NSFC) Department of Control Science and Engineering group of Networked Sensing and Control in the State Key laboratory of Industrial Control Technology Institute of Industrial Process Control at Zhejiang University the School of Electrical and Electronic Engineering at Nanyang Technological University

Ⅰ.Introduction CYBER-PHYSICAL system is a system of collaborating computational elements to control physical *** coordination and the tight link between computational,virtual and physical resources in cyber-physical system will have a pervasive effect on our everyday *** development of cyber-physical system will create new opportunities for the introduction of services that will enhance the quality of life

关键词： for WSAN Guest Editorial for Special Issue on Cyber-Physical systems of into on WSN is

来源：评论

学校读者我要写书评

暂无评论

control structure determination and enhanced self-tuning using the 'MUSE' AI toolkit

Control structure determination and enhanced self-tuning usi...

引用

IEE Colloquium on Knowledge Based Environments for Industrial Applications Including Co-Operating Expert systems in control

作者： R. Corea D. Peel A.J. Morris Advanced Process Control and Knowledge Based Systems Research Group Department of Chemical and Process Engineering University of Newcastle UK

The basis of a comprehensive real-time knowledge based system for control structure design and supervisory control is developed using the MUSE AT toolkit. Representation of control engineering knowledge as procedural code in an object-based structure ensures that the knowledge base is easily understood and modified by domain experts. The simple learning capability that has been implemented has proved to be extremely useful and is being developed further as part of continuing research in this area. It is also hoped to extend the capabilities of the supervisory modules particularly in dealing with loop interactions, the prediction and diagnosis of faults and the provision of an intelligent operator interface.< >

关键词： Adaptive control Digital control Design automation control systems Knowledge based systems Knowledge representation

来源：评论

学校读者我要写书评

暂无评论

LQ control of Lotka-Volterra systems Based on their Locally Linearized Dynamics

引用

IFAC-PapersOnLine 2016年第10期49卷 241-245页

作者： Lipták, Görgy Magyar, Attila Hangos, Katalin M. University of Pannonia Faculty of Information Technology Department of Electrical Engineering and Information Systems H-8200 Egyetem street 10 Veszprém Hungary HAS Computers and Automation Research Institute Process Control Research Group H-1111 Kende street 13-17 Budapest Hungary

This work applies the LQ control framework to the class of quasi-polynomial and Lotka-Volterra systems through the linearized version of their nonlinear system model. The primary aim is to globally stabilize the original system with a suboptimal LQ state feedback by means of a well-known entropy-like Lyapunov function that is related to the diagonal stability of linear systems. This aim can only be reached in the case when the quasi-monomial composition matrix is invertible. In the rank-deficient case only the local stabilization of the system is possible with an LQ controller that is designed using the locally linearized model of the closed-loop system model. © 2016

关键词： System stability Biological systems Closed loop systems Linear matrix inequalities Linear systems Linearization Lyapunov functions Nonlinear systems State feedback Closed loop system modeling Composition matrixes Linearized dynamics Local stabilizations Lotka Volterra systems LQ control Lyapunov stability Nonlinear system modeling

来源：评论

学校读者我要写书评

暂无评论

Dynamic modeling and model analysis of a large industrial synchronous generator

Dynamic modeling and model analysis of a large industrial sy...

引用

作者： Fodor, Attila Magyar, Attila Hangos, Katalin M. Department of Electrical Engineering and Information Systems University of Pannonia 8200 Veszprém Hungary Process Control Research Group Computer and Automation Research Institute HAS Budapest Hungary

ISBN: (纸本)9788070438657

A simple dynamic model of an industrial size synchronous generator operating in a nuclear power plant is developed in this paper based on first engineering principles. The constructed state-space model consists of a nonlinear state equation and a bi-linear output equation. It has been shown that the model is locally asymptotically stable with parameters obtained from the literature for a similar generator. The effect of load disturbances on the partially controlled generator has been analyzed by simulation using a traditional PI controller. It has been found that the controlled system is stable and can follow the set-point changes in the effective power well. The disturbance rejection of the controller is also satisfactory.

关键词： Disturbance rejection

来源：评论

学校读者我要写书评

暂无评论

Co-simulation with OPC UA

Co-simulation with OPC UA

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Stephan Hensel Markus Graube Leon Urbas Till Heinzerling Mathias Oppelt Chair for Process Control Systems Engineering Technische Universität Dresden Germany Siemens AG

ISBN: (纸本)9781509028719

engineering projects are driven by cost and time constraints. Furthermore, the increasing complexity of these projects makes it necessary to expose specification, implementation and conceptual errors as early as possible. Therefore, a well-established method is to carry out simulation experiments. This paper presents a concept for coupling already existing (domain-specific) simulation models that allow the integration of individual models in a co-simulation environment. A complete system simulation can take place in this environment. Therefore, the contribution of OPC UA as a generic middleware technology - a candidate for Industrie 4.0 scenarios that is being intensively discussed - is analysed. Through a prototypical implementation based on open62541, we can show a proof of concept by coupling different simulations (SIMIT and FMI instances). It also shows that our concept can be easily extended regarding the integration of new simulators.

关键词： Servers Adaptation models Data models Couplings Standards Registers

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：