检索结果-内蒙古大学图书馆

International Conference on Electrical Machines and Systems, ICEMS 2007

作者： Kachapornkul, S. Jitkreeyarn, P. Somsiri, P. Tungpimolrut, K. Akira, Chiba Tadashi, Fukao Industrial Control and Automation Laboratory Section National Electronics and Computer Technology Center Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

In this paper, a design of the 3-phase, 6-stator-pole and 4-rotor-pole, 15 kW switched reluctance motor for the propulsion system of the electric vehicle is presented. Its performance such as the torque per volume and... 详细信息

ISBN: (纸本)8986510081

关键词： Electric vehicles

来源：评论

学校读者我要写书评

暂无评论

OBJECTIVE DIRECTED control USING LOCAL MINIMISATION FOR AN AUTONOMOUS UNDERWATER VEHICLE

引用

IFAC Proceedings Volumes 2007年第15期40卷 72-77页

作者： Lars Alminde Jan D. Bendtsen Jakob Stoustrup Kristin Y. Pettersen Department of Electronic Systems Section of Automation and Control Aalborg University Department of Engineering Cybernetics Norwegian University of Science and Technology

This paper presents a new method for control of complex MIMO plants based on a quantised state description. The control algorithm solves a minimisation problem for a set of user defined convex control objective functions with the plant dynamics as a constraint. The solution makes use of local linear models that are effectively calculated by propagating the state on-line using a quantised state description. The method is demonstrated on a model of an autonomous underwater vehicle.

关键词： non-linear MIMO control optimisation quantised state system

来源：评论

学校读者我要写书评

暂无评论

Prediction of lacking control power in power plants using statistical methods

Prediction of lacking control power in power plants using st...

引用

European control Conference (ECC)

作者： P.F. Odgaard B. Mataji J. Stoustrup Section of Automation and Control Aalborg University Aalborg East Denmark Dong Energy A/S Fredericia Denmark

Prediction of the performance of plants like power plants is of interest, since the plant operator can use these predictions to optimize the plant production. In this paper the focus is addressed on a special case where a combination of high coal moisture content and a high load limits the possible plant load, meaning that the requested plant load cannot be met. The available models are in this case uncertain. Instead statistical methods are used to predict upper and lower uncertainty bounds on the prediction. Two different methods are used. The first relies on statistics of recent prediction errors; the second uses operating point depending statistics of prediction errors. Using these methods on the previous mentioned case, it can be concluded that the second method can be used to predict the power plant performance, while the first method has problems predicting the uncertain performance of the plant.

关键词： Coal Uncertainty Power generation Furnaces Moisture Predictive models Observers

来源：评论

学校读者我要写书评

暂无评论

Prediction of lacking control power in power plants using statistical methods 9

Prediction of lacking control power in power plants using st...

引用

2007 9th European control Conference, ECC 2007

作者： Odgaard, P.F. Mataji, B. Stoustrup, J. Section of Automation and Control Department of Electronic Systems Aalborg University Fredrik Bajers Vej 7C Aalborg EastDK-9220 Denmark Dong Energy A/S Kraftværksvej 53 FredericiaDK-7000 Denmark

ISBN: (纸本)9783952417386

Prediction of the performance of plants like power plants is of interest, since the plant operator can use these predictions to optimize the plant production. In this paper the focus is addressed on a special case where a combination of high coal moisture content and a high load limits the possible plant load, meaning that the requested plant load cannot be met. The available models are in this case uncertain. Instead statistical methods are used to predict upper and lower uncertainty bounds on the prediction. Two different methods are used. The first relies on statistics of recent prediction errors;the second uses operating point depending statistics of prediction errors. Using these methods on the previous mentioned case, it can be concluded that the second method can be used to predict the power plant performance, while the first method has problems predicting the uncertain performance of the plant. © 2007 EUCA.

关键词： Forecasting

来源：评论

学校读者我要写书评

暂无评论

Potentially Distributable Energy: Towards Energy Autonomy in Large Population of Mobile Robots

Potentially Distributable Energy: Towards Energy Autonomy in...

引用

IEEE International Symposium on Computational Intelligence in Robotics and automation (CIRA)

作者： Trung Dung Ngo Hector Raposo Henrik Schioler Center for Embedded Software Systems University of Aalborg Aalborg Denmark Control & Automation section Electronics Institute Aalborg Denmark

We propose a new concept, potentially distributable energy, in the field of autonomous mobile robots. Considering a system of multiple robots powered by batteries, each robot no longer works since its energy capacity is expired. To extend operating time, the robot needs to replenish energy through recharging energy. To date, except research on vaccum cleaning robots that are able to recharge battery when docking with the fixed station has been achieved, there does not exist any research of energy distribution to prolong operating time in a large population of mobile robots. This could be caused by the lack of using rechargeable battery in the fact that the robot has to normally spend the charging-time much longer than the operating time. This paper presents simulation results of mobile robots that are capable of not only self-recharging energy but also exchanging batteries to the other robots. Initially, we describe a simulation of multiple mobile robots, and then issue rules of battery exchange, which is formulated under constraints of workload, distance and remaining capacity. The simulation shows that: (a) a robot is able to be energetically autonomous if its energy can be replenished by the other robots or it is able to come back to the main charging station to replenish itself; (b) energy of a robot is always under constraints of energy distribution of the mother charging station and the other robots; (c) distributed energy balance is the main elements to decide a number of robots in a specific area and an ideal location of the repository when one wants to deploy a large population of autonomous mobile robots. Finally, based on results of the simulation we adjust rules for our real multirobot system.

关键词： Mobile robots Robot sensing systems Batteries Robotics and automation Fuels Infrared sensors Cleaning Electronic components Vehicles Computational intelligence

来源：评论

学校读者我要写书评

暂无评论

Randomized Robot Trophallaxis: From concept to implementation

Randomized Robot Trophallaxis: From concept to implementatio...

引用

IEEE International Conference on Systems, Man and Cybernetics

作者： Trung Dung Ngo Henrik Schioler Center for Embedded Software Systems University of Aalborg Aalborg Denmark Control & Automation section Electronics Institute Aalborg Denmark

Trophallaxis is a natural phenomenon, biologically observed from social insects or vertebrate animals, to exchange food between colony members. This paper describes a new robotic concept, "Randomized Robot Trophallaxis", based on a group of autonomous mobile robots with capabilities of self-refueling energy and self-sharing energy. We firstly clarify the concept "Randomized Robot Trophallaxis" by given examples of some natural animal societies. We continuously put emphases on mechatronics implementation of the trophallactic robots. Simulation results are described to point out considerable advantages of trophallactic features when deploying multiple mobile robots latter. The paper is ended with discussion on the concept as well as future vision.

关键词： Mobile robots Animals Humans Robot sensing systems Robotics and automation Insects Feeds Birds control systems Solids

来源：评论

学校读者我要写书评

暂无评论

An Initial Rotor Position Estimation Method for Switched Reluctance Motor without Using Machine Parameter

An Initial Rotor Position Estimation Method for Switched Rel...

引用

International Conference on Electrical Machines and Systems 2007(ICEMS2007)(第十届国际电机与系统会议)

作者： K. Tungpimolrut S. Kachapornkul P.Somsiri P. Jitkreeyarn Tadashi Fukao Akira Chiba Industrial Control and Automation Laboratory Section National Electronics and Computer Technology C Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

In this paper a method to estimate the initial rotor position of the switched reluctance motor (SRM) at the stand still condition is proposed. The proposed method can be implemented by the simple microcontroller based system, and it is not necessary to know the magnetization curves. The impulse gate drive signal is applied and the winding current is detected and its approximate value is used for calculating the rotor position. The compensation method to reduce the estimation error thorough one cycle is also mentioned. The proposed method is implemented with the 6-stator-pole and 4- rotor-pole, 1.5 kW 3-phase switched reluctance motor.

关键词： Switched reluctance motor initial rotor position estimation

来源：评论

学校读者我要写书评

暂无评论

Using dynamical uncertainty models for estimation of uncertainty bounds on power plant performance prediction 9

Using dynamical uncertainty models for estimation of uncerta...

引用

2007 9th European control Conference, ECC 2007

作者： Odgaard, P.F. Stoustrup, J. Mataji, B. KK-Electronic A/s Pontopidanstræde 101 Aalborg EastDK-9220 Denmark Section of Automation and Control Department of Electronic Systems Aalborg University Fredrik Bajers Vej 7C Aalborg EastDK-9220 Denmark Dong Energy A/S Kraftværksvej 53 FredericiaDK-7000 Denmark

ISBN: (纸本)9783952417386

Predicting the performance of large scale plants can be difficult due to model uncertainties etc, meaning that one can be almost certain that the prediction will diverge from the plant performance with time. In this paper output multiplicative uncertainty models are used as dynamical models of the prediction error. These proposed dynamical uncertainty models result in an upper and lower bound on the predicted performance of the plant. The dynamical uncertainty models are used to estimate the uncertainty of the predicted performance of a coal-fired power plant. The proposed scheme, which uses dynamical models, is applied to two different sets of measured plant data. The computed uncertainty bounds cover the measured plant output, while the nominal prediction is outside these uncertainty bounds for some samples in these examples. © 2007 EUCA.

关键词： Coal fired power plant

来源：评论

学校读者我要写书评

暂无评论

Preventing performance drops of coal mills due to high moisture content 9

Preventing performance drops of coal mills due to high moist...

引用

2007 9th European control Conference, ECC 2007

作者： Odgaard, P.F. Stoustrup, J. Mataji, B. KK-Electronc A/s Pontoppidanstræde 101 Aalborg EastDK-9220 Denmark Section of Automation and Control Department of Electronic Systems Aalborg University Fredrik Bajers Vej 7C Aalborg EastDK-9220 Denmark Dong Energy A/S Kraftværksvej 53 FredericiaDK-7000 Denmark

ISBN: (纸本)9783952417386

Coal mills pulverize and dry the coal dust before it is blown into the furnace in coal-fired power plants. The coal mills can only deliver the requested coal flow if certain conditions are fulfilled. These are normally considered as constraints on individual variables. However, combinations of more than one variable might cause problems even though these individually variables are in an acceptable region. This paper deals with such a problem. The combination of a high load of the power plant, a large load change and high moisture content in the coal, can force the coal mill into a state where coal is accumulated instead of being blown into the furnace. This paper suggests a simple method for preventing the accumulation of the coal in the mill, by limiting the requested coal flow considering the coal moisture content and the temperature outside the mill. © 2007 EUCA.

关键词： Coal

来源：评论

学校读者我要写书评

暂无评论

Using dynamical uncertainty models for estimation of uncertainty bounds on power plant performance prediction

Using dynamical uncertainty models for estimation of uncerta...

引用

European control Conference (ECC)

作者： P.F. Odgaard J. Stoustrup B. Mataji KK-Electronic a/s Department of Electronic Systems Aalborg East Denmark Section of Automation and Control Aalborg University Aalborg East Denmark Dong Energy A/S Fredericia Denmark

关键词： Uncertainty Coal Predictive models Computational modeling Power generation Furnaces Vectors

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：