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Design and evaluation of a PLL-based position controller for sensorless vector control of permanent-magnet synchronous machines

Design and evaluation of a PLL-based position controller for...

引用

IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

作者： Burgos, Rolando P. Kshirsagar, Parag Lidozzi, Alessandro Jang, Jihoon Wang, Fred Boroyevich, Dushan Rodriguez, Pedro Sul, Seung-Ki Virginia Tech Blacksburg VA 24061 United States ROMA TRE University Department of Mechanical and Industrial Engineering Via della Vasca Navale 79 00146 Rome Italy HEV System Engineering Team Hyundai Motor Company Hwaseong-Si Gyeonggi-Do 772-1 Korea Republic of Department of Electrical Engineering Technical University of Catalonia EUETIT Colom 1 08222 - Barcelona Spain School of Electrical Engineering and Computer Science Seoul National University Seoul 151-744 Korea Republic of

ISBN: (纸本)1424401364

This paper presents a rotor position controller for sensorless vector control of permanent magnet synchronous machines (PMSM) based on a synchronous d-q frame phase-locked loop (PLL). Extending the capabilities of PLL's for grid-connected converters-using feedback linearization to ensure a constant dynamic response regardless of the operating region and rotor speed, the proposed controller takes advantage of the sinusoidal and balanced PMSM back-EMF voltages synchronizing the estimated and actual d-q frames. The resultant controller structure is readily linearized providing an accurate design tool based on frequency response specifications. A complete design procedure is provided, together with simulation and experimental results with a 3.5 kW PMSM drive, all of which verify the excellent results attained by the proposed PLL-based position controller. © 2006 IEEE.

关键词： Controllers

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Binary sequences with optimal correlations and large linear span

Binary sequences with optimal correlations and large linear ...

引用

2006 IEEE International Conference on Communications, ICC 2006

作者： Xiangyong, Zeng Lei, Hu Qingchong, Liu Yuhong, Zhu Faculty of Mathematics and Computer Science Hubei University Wuhan Hubei 430062 China Graduate School Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China Department of Electrical and System Engineering Oakland University Rochester MI 48309 United States Laudis Systems LLC 80 Newfield Avenue Edison NJ 08837 United States

ISBN: (纸本)1424403553

A family of binary sequences is presented and proved to have optimal correlations and large linear span. It includes the small set of Kasami sequences, No sequence set and TN sequence set as special cases. A lower bound on the linear span of the family is provided. With suitable choices of parameters, it is proved that the family has exponentially larger linear spans than both No sequences and TN sequences. © 2006 IEEE.

关键词： Binary sequences

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Advantages of inset PM machines for zero-speed sensorless position detection

Advantages of inset PM machines for zero-speed sensorless po...

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Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS)

作者： Nicola Bianchi Silverio Bolognani Ji-hoon Jang Seung-ki Sul Department of Electrical Engineering University of Padova Padova Italy HEV System Engineering Team Corporate Research & Development Division Hyundai motor company South Korea School of Electrical Engineering and Computer Science Seoul National University Seoul South Korea

The aim of this paper is to analyze the behavior of a sensorless control system based on a high-frequency signal injection combined with an inset PM motor. The rotor position of a synchronous permanent magnet (PM) motor with anisotropic rotor can be detected by the control system which superimposes a high-frequency signal to the steady-state stator voltage. The corresponding high-frequency current is modulated by the rotor anisotropy and used to determine the rotor position. These techniques are effective at zero and at low motor speed. Both saturation and cross-coupling have a heavy influence on the correct rotor position detection. In order to highlight the effectiveness of the sensorless technique, the tests are carried out at various operating conditions

关键词： Rotors Permanent magnet motors Synchronous motors Sensorless control Anisotropic magnetoresistance Signal analysis Magnetic analysis Voltage control Control systems Steady-state

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Time-varying failure rate extraction in electric power distribution equipment

Time-varying failure rate extraction in electric power distr...

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International Conference on Probabilistic Methods Applied to Power systems (PMAPS)

作者： Jong-Fil Moon Jea-Chul Kim Hee-Tae Lee Sang-Seung Lee Yong Tae Yoon Kyung-Bin Song Power System Laboratory Korea Electrical Engineering and Science Research Institute Seoul South Korea Department of Electrical Engineering Soongsil University Seoul South Korea School of Electrical Engineering and Computer Sciences Seoul National University Seoul South Korea

Reliability evaluation of power distribution system is very important to both power utilities and customers. It presents the probabilistic number and duration of interruption such as failure rate, SAIDI, SAIFI, and CAIDI. However, it has a fatal weakness at reliability index because of accuracy of failure rate. In this paper, the time-varying failure rate (TFR) of power distribution system equipment is extracted from the recorded failure data of Korea Electric Power Corporation (KEPCO) in Korea. For TFR extraction, it is used that the fault data accumulated by KEPCO during 10 years. The TFR is approximated to bathtub curve using the exponential (random failure) and Weibull (aging failure) distribution function. In addition, Kaplan-Meier estimation is applied to TFR extraction because of incomplete failure data of KEPCO. Finally, probability plot and regression analysis is applied. It is presented that the extracted TFR is more effective and useful than mean failure rate (MFR) through the comparison between TFR and MFR

关键词： Power system reliability Data mining Weibull distribution Power distribution Failure analysis Power systems Time varying systems Moon Switches Hazards

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Interoperable adaptive educational hypermedia: A web service definition

Interoperable adaptive educational hypermedia: A web service...

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6th International Conference on Advanced Learning Technologies, ICALT 2006

作者： Meccawy, Maram Celik, Ilknur Cristea, Alexandra Stewart, Craig Ashman, Helen School of Computer Science and Information Technology University of Nottingham Jubilee Campus Wollaton Road Nottingham NG8 1BB United Kingdom Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands Department of Electronic Engineering Queen Mary University of London Mile End Road London El 4NS United Kingdom

ISBN: (纸本)0769526322

This paper presents an approach to resolve the problem of authoring and interchanging educational material, based on web services. Here we describe the ultimate goal, of reusing and interchanging freely adaptive eleaming material, shortly sketch previous solutions, showing their benefits but also limitations and then introduce our web-service based approach. Finally, we discuss the gains brought by our proposed solution. © 2006 IEEE.

关键词： E-learning

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Trajectory Planning for Tele-Robotic Skull Drill system

Trajectory Planning for Tele-Robotic Skull Drill System

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International Conference on Information and Automation (ICIA)

作者： Weimin Shen Jason Gu Yanjun Shen Electrical and Computer Eng Dalhousie University Halifax NS Canada School of Control Science and Engineering Shandong University China Institute of Nonlinear Complex System Three Gorges University Yichang Hubei China

This paper first gives a brief literature review about relevant technology, including sate-of-the-art surgical robotics, state-of-the-art image-guided neurosurgery and applications, and internet-based robotics. The architecture of the proposed tele-robotic skull drill system is presented in the paper, including the client/server control architecture for the telerobotic skull drill system, the mechanical interface between robotic arm and the skull drill, and control system for the telerobotic skull drill system. Trajectory planning for this telerobotic system is also given in the paper, including three phases, free motion position trajectory planning, free motion orientation trajectory planning, and position trajectory planning under constraints. Finally, the experiment is concluded in the paper.

关键词： Trajectory Skull Motion planning Robots Telerobotics Control systems Surgery Neurosurgery Internet Web server

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Stepwise Feature Selection by Cross Validation for EEG-based Brain computer Interface

Stepwise Feature Selection by Cross Validation for EEG-based...

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International Joint Conference on Neural Networks (IJCNN)

作者： K. Tanaka T. Kurita F. Meyer L. Berthouze T. KAWABE Graduate School of System and Information Engineering University of Tsukuba Tsukuba Ibaraki Japan AIST central 2 National Institute for Advanced Industrial Science and Technology Tsukuba Ibaraki Japan Department of Computer Science University of Tsukuba Tsukuba Ibaraki Japan

The potential of brain-computer interfaces (BCI) in serving a useful purpose, e.g., supporting communication in paralyzed patients, hinges on the quality of the classification of the brain waves. This paper proposes a novel method to construct a classifier with improved generalization performance. A feature selection method is applied to features calculated from the EEG signals so that unnecessary or redundant features can be removed and only effective features are left for the classification task. Kernel support vector machines (kernel SVM) were used as a classifier and the best combinations of features were searched by backward stepwise selection, i.e., by eliminating unnecessary features one by one, and by evaluating the resulting generalization performance through cross validation. Experiments showed that the generalization performance of the classifier constructed from the best set of features was higher than that of the classifier using all features.

关键词： Brain computer interfaces Support vector machines Support vector machine classification Electroencephalography Kernel Electrodes Signal processing Fasteners Communication system control Spinal cord injury

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Interoperability between AEH user models

Interoperability between AEH user models

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Joint International Workshop on Adaptivity, Personalization and the Semantic Web, APS'06

作者： Stewart, Craig Celik, Ilknur Cristea, Alexandra Ashman, Helen Department of Electronic Engineering Queen Mary University of London Mile End Road London E1 4NS United Kingdom School of Computer Science and Information Technology University of Nottingham Jubilee Campus Wollaton Road Nottingham NG8 1BB United Kingdom Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Den Dolech 2 5600 MB Eindhoven Netherlands

ISBN: (纸本)1595934537

Creating a good quality Adaptive Educational Hypermedia (AEH) system involves a great expenditure of time, effort and money, especially to author the materials in order to implement adaptivity. Moreover, authoring AEH systems is as hard as maintaining them. Furthermore, with the new advances in AEH development, the authored content in a given system can become outdated very rapidly. When the massive overhead in authoring is combined with the possibility of the current AEH system becoming unavailable due to lack of maintenance, providing interoperability of adaptive systems becomes necessary. This paper describes our research on providing interoperability of user models between different AEH systems via a one-to-one conversion between two AEH systems, MOT and WHURLE. Here, we identify the differences and commonalities and address how these influence the efficiency of the conversion of the two systems' user models. Although this conversion is done via simple peer-to-peer interaction, it can be easily extended to make use of semantic web technologies, as for example RDF or XML conversion formats, or web services for user model exchange. Therefore, we consider that our work on feature extractions sets the basis for such conversions for the Web and Semantic Web. Copyright 2006 ACM.

关键词： Education

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Interoperable Adaptive Educational Hypermedia: A Web Service Definition

Interoperable Adaptive Educational Hypermedia: A Web Service...

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International Conference on Advanced Learning Technologies (ICALT)

作者： M. Meccawy I. Celik A. Cristea C. Stewart H. Ashman School of Computer Science and Information Technology University of Nottingham Nottingham UK Information System Department Faculty of Mathematics and Computing Science Technical University Eindhoven Netherlands Department of Electronic Engineering Queen's Mary University of London London UK

This paper presents an approach to resolve the problem of authoring and interchanging educational material, based on Web services. Here we describe the ultimate goal, of reusing and interchanging freely adaptive e-learning material, shortly sketch previous solutions, showing their benefits but also limitations and then introduce our Web-service based approach. Finally, we discuss the gains brought by our proposed solution

关键词： Web services Simple object access protocol Electronic learning XML Service oriented architecture computer science Information technology Information systems Mathematics Standards development

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Theory and Network Applications of Dynamic Bloom Filters

Theory and Network Applications of Dynamic Bloom Filters

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： D. Guo J. Wu H. Chen X. Luo Key laboratory of C4ISR Technology School of Information System and Management National University of Defense Technology Changsha Hunan China Department of Computer Science and Engineering Florida Atlantic University Boca Raton FL USA

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