检索结果-内蒙古大学图书馆

Mediterranean Conference on control & Automation

作者： Sabin - Constantin Carpiuc Mircea Lazar Faculty of Automatic Control and Computer Engineering Technical University "Gheorghe Asachi" of Iasi Department of Electrical Engineering Eindhoven University of Technology

ISBN: (纸本)9781479909964

State-feedback control of externally excited synchronous machines employed in applications such as hybrid electric vehicles and full electric vehicles is a challenging problem. Indeed, these applications are characterized by fast dynamics that are subject to hard physical and control constraints. The goal of this paper is to provide a controller synthesis method that can answer these challenges effectively. To this end, firstly, a linear control law is obtained for the unconstrained dynamics via a standard control Lyapunov function (CLF), along with an admissible basin of attraction. Then, a piecewise affine control law defined on a cubic partition of the state-space is obtained for the constrained dynamics via a flexible CLF. An a posteriori test for checking stability and invariance of a set of initial conditions for the resulting closed-loop dynamics is also proposed. The effectiveness of the developed synthesis method is demonstrated in a realistic simulation scenario.

关键词： state feedback control synchronous machines feedback control region of attraction chlorofibre Hybrid electric vehicles Peptide Synthesis Technique Organic Synthesis Techniques Inorganic Synthesis Techniques control law invariance dynamics INITIAL CONDITIONS all-electric

来源：评论

学校读者我要写书评

暂无评论

Selecting sensor for on load tap changer contacts degree of wear diagnostics

Selecting sensor for on load tap changer contacts degree of ...

引用

作者： Cichoń, A. Boruckia, S. Bergerb, P. Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology Prószkowska 76 45-758 Opole Poland TurboCare Poland S.A. Powstańców slĄskich 85 42-701 Lubliniec Poland

Results of scientific research works considering selection of measuring transducer applied for registration of acoustic emission signals generated by on load tap changers are presented in the paper. During the coupling process acoustic emission signals are generated by: the mechanical setup of tap changer, contacts operation, and other phenomena. For most on load tap changers types, the working medium is insulation oil in which the acoustic wave being formed propagates to the steal tank. There exists a possibility to register acoustic emission signals with a piezoelectric transducer attached to the outer tank surface or with a hydrophone immersed in the oil. Acoustic emission signal obtained in such manner contains information which describes operation of the power tap changer and the selector. A comparative analysis of acoustic emission signals generated by on load tap changers working under laboratory conditions, with applied measuring transducers with different transmittances, is presented in the paper. The comparative analysis was performed in order to determine their suitability for on load tap changers technical condition diagnosis. Based on the results achieved, one transducer which allows the registration of acoustic events generated during on load tap changers operation was selected.

关键词： Tanks (containers)

来源：评论

学校读者我要写书评

暂无评论

T1DM Subject as a Time-delay System: Modeling and Adaptive control

T1DM Subject as a Time-delay System: Modeling and Adaptive C...

引用

International Conference on Process control

作者： Tomas Ludwig Ivan Ottinger Marian Tarnik Eva Miklovicova Institute of Control and Industrial Informatics Faculty of Electrical Engineering and Information Technology Slovak University of Technology in Bratislava

ISBN: (纸本)9781479909261

Type 1 Diabetes Mellitus (T1DM) subject model is presented in this paper. The model consists of two parts. A glucose and insulin plasma kinetics is inferred from a minimal model of glucose kinetics commonly used to analyze the results of an intravenous glucose tolerance test (IVGTT). A subcutaneous insulin and a subcutaneous glucose kinetics are modeled as a time-delay. A meal announcement information is considered as a measured disturbance signal and a disturbance model is also proposed. The presented model serves as a base for the design of an adaptive control algorithm for automatic normoglycemia maintaining in T1DM subject. The adaptive control algorithm is also briefly presented in the paper.

关键词： adaptive control Disturbance model Delay systems Computer algorithms Intravenous Glucose Tolerance Test fundamental design Type 1 Diabetes Mellitus Kinetics Glucose Tolerance Test Blood Glucose Glucose

来源：评论

学校读者我要写书评

暂无评论

One variant of self-tuning DC motor adaptive controller

One variant of self-tuning DC motor adaptive controller

引用

Proceedings of the International Convention MIPRO

作者： Ž. Jurić H. Šiljak Department of Automatic Control & Electronics Faculty of Electrical Engineering Sarajevo Bosnia and Herzegovina Department of Electrical & Electronics Engineering International Burch University Sarajevo Bosnia and Herzegovina

This paper proposes a self-tuning adaptive controller in order to produce response of a second order block from the typically nonlinear motor. Periodic reset of controller's estimator block is employed as an improvement of the original design. Classical model of DC motor is well-controlled via this improved controller, while for the system containing a motor and thyristor-fired phase-controlled rectifier a new improvement is introduced, the arcsine compensation block. controller is tested in different simulation conditions and it shows high ability to compensate any effects, produced either by the reference value change or the external error induced by load or thyristor rectifier.

关键词： Rectifiers Mathematical model Voltage control DC motors Equations Covariance matrices Convergence

来源：评论

学校读者我要写书评

暂无评论

A new robust PID controller design technique using bode-interpolation

A new robust PID controller design technique using bode-inte...

引用

International Carpathian control Conference (ICCC)

作者： Štefan Bucz Alena Kozáková Vojtech Veselý Institute of Control and Industrial Informatics Faculty of Electrical Engineering and Information Technology Slovak University of Technology in Bratislava Slovakia

The paper presents theoretical and practical aspects of a new practice-oriented approach to the design of robust PID controllers for real plants with black-box-type uncertainty and unknown mathematical model. The proposed approach is based on interpolation of the Bode plots of the uncertain controlled plant followed by a new robust practice-oriented robust PID controller design method in the frequency domain. Application of the proposed two-stage design procedure is illustrated on a realworld position servo-system with multiple control loops.

关键词： Robustness Uncertainty Interpolation Mathematical model Robust control Transfer functions Object recognition

来源：评论

学校读者我要写书评

暂无评论

Application of Unstable System in Education of Modern control Methods

引用

IFAC Proceedings Volumes 2013年第17期46卷 114-119页

作者： Daniel Vozäk Adrian Ilka Institute of Control and Industrial Informatics Faculty of Electrical Engineering and Information Technology Slovak University of Technology in Bratislava IlkoviĈova 3 812 19 Bratislava

The paper addresses the problem of controller design for an unstable system using modern control methods and shows the difficulties of their implementation into student courses in our Institute. The created MATLAB programs and study material allow the students to work with identification of the process, robust PID design, predictive control and gain-scheduled control. All methods are practically implemented on a magnetic levitation model.

关键词： Unstable system Identification Gain-scheduled control Generalized predictive control PID controller Frequency domain Lyapunov function

来源：评论

学校读者我要写书评

暂无评论

Design and verification of novel adaptive controller in speed servo drive

Design and verification of novel adaptive controller in spee...

引用

International Conference on Process control (PC)

作者： Igor Bélai Milan Žalman Institute of Control and Industrial Informatics Faculty of Electrical Engineering and InformationTechnology Slovak University of Technology in Bratislava Bratislava Slovakia

When designing the control algorithm in motion systems, it is not always possible to apply the theory of linear control systems directly. The reason may be a non-linearity of a load, variation of drive parameters, or their lack of knowledge. In this case the solution is the use of adaptive systems. The paper describes an algorithm that combines the IP control scheme and the Model Reference Adaptive control (MRAC) to adjust the controller parameters and to identify the motor parameters in real time. The proposed solution does not require initial setting of controller parameters. Features of the proposed algorithm are verified by simulations and the results are presented in the paper. Designed MRAC IP controller is suitable for practical implementation in DC and AC drives.

关键词： Adaptation models IP networks Velocity control Mathematical model Servomotors Algorithm design and analysis

来源：评论

学校读者我要写书评

暂无评论

A novel adaptive spiral dynamic algorithm for global optimization

A novel adaptive spiral dynamic algorithm for global optimiz...

引用

UK Workshop on Computational Intelligence (UKCI)

作者： A. N. K. Nasir M. O. Tokhi O. Sayidmarie R. M. T. Raja IsmaiL Department of Automatic Control & Systems Engineering University of Sheffield Sheffield UK Faculty of Electrical and Electronics Engineering Universiti Malaysia Pahang Pahang Malaysia

This paper presents a novel adaptive spiral dynamic algorithm for global optimization. Through a spiral model, spiral dynamic algorithm has a balanced exploration and exploitation strategy. Defining suitable value for the radius and displacement in its spiral model may lead the algorithm to converge with high speed. The dynamic step size produced by the model also allows the algorithm to avoid oscillation around the optimum point. However, for high dimension problems, the algorithm may easily get trapped into local optima. This is due to the incorporation of a constant radius and displacement in the model. In order to solve the problem, a novel adaptive formulation is proposed in this paper by varying the radius and displacement of the spiral model. The proposed algorithm is validated with various dimensions of unimodal and multimodal benchmark functions. Furthermore, it is applied to parameter optimization of an autoregressive with exogenous terms dynamic model of a flexible manipulator system. Comparison with the original spiral dynamic algorithm shows that the proposed algorithm has better accuracy. Moreover, the time domain and frequency domain responses of the flexible manipulator model shows that the proposed algorithm outperforms its predecessor algorithm.

关键词： Heuristic algorithms Spirals Adaptation models Algorithm design and analysis Manipulator dynamics Convergence Benchmark testing

来源：评论

学校读者我要写书评

暂无评论

An application of Neural Network for paraplegic quadriceps muscle model

An application of Neural Network for paraplegic quadriceps m...

引用

International Colloquium on Signal Processing & Its Applications, CSPA

作者： S. M. Salleh R. Jailani M. O. Tokhi Faculty of Electrical Engineering Universiti Teknologi MARA Shah Alam Selangor Malaysia Department of Automatic Control and System Engineering University of Sheffied UK

This paper presents the development of quadriceps muscle model based on Functional electrical Stimulation (FES). Artificial Neural Network (ANN) were used to study the impact of stimulation frequency, pulse width and pulse duration towards the output torque produce by paraplegic.722 data are used by randomly divide 70% for training, 15% for validation and another 15% is for testing process. Two types of training approaches which is Levenberg Marquardt Back propagation (LM) and Resilient Back propagation (RP) are used in developing of quadriceps muscle model. The model developed are validate with the clinical data to see the accuracy of the torque output predicted with the identified parameter. From the study, LM is found to be the most accurate with accuracy up to 99.98% The identified parameter used from model developed in this study will be used to control various strategies on the Functional electrical Stimulation (FES) system.

关键词： Muscles Mathematical model Training Artificial neural networks Jacobian matrices Data models Biological system modeling

来源：评论

学校读者我要写书评

暂无评论

Computationally efficient method of simulation of an electric drive impact on the power grid

引用

Archives of electrical engineering 2013年第1期62卷 77-90页

作者： Beniak, Ryszard Gardecki, Arkadiusz Opole University of Technology Faculty of Electrical Engineering Automatic Control and Computer Science Sosnkowskiego 31 45-272 Opole Poland

This paper presents a computationally efficient method for modelling an impact of the converter drive on the power grid. The formalized variable structure method (FVSM) allows for comprehensive studies of the effect on the power grid and examining the relation between this effect and the number of drive and feeding line parameters. In order to obtain a comprehensive model along with the model of the power grid, the parameters that are applied originate from a drive of a coal-fired power station. These parameters have been determined based on assessment and estimation. The estimation process was conducted with the aid of a model that allows for the commutation of power electronic elements. The authors confirmed that the model was correct by comparing empirical and theoretical voltage and current waveforms. Harmonic content of the voltage and current in the power grid which feeds the drive are considered to be the measure of the converter drive impact on the power grid. The standard method for the reduction of a harmonic content in the voltage and current involves the application of line reactors and distribution or converter transformers. As an example, the authors determine the impact of the drive on the power grid with respect to the adopted parameters of the line reactor. This example presents FVSM abilities with regard to simulation of complex systems that contain power grid components and converter drives.

关键词： Electric drives

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：