检索结果-内蒙古大学图书馆

作者： Dostálek, Petr Pekař, Libor Vašek, Vladimír Dolinay, Jan Department of Automation and Control Engineering Tomas Bata University in Zlín Faculty of Applied Informatics Nad Stráněmi 4511 760 05 Zlín Czech Republic

ISBN: (纸本)9789604741991

Paper deals with implementation of self-tuning digital PID controller on general-purpose 8-bit Freescale 68HC908GB60 microcontroller which is a part of development board M68EVB908GB60 by Axiom Manufacturing. The process is identified using modified recursive least squares method with adaptive directional forgetting resulting in δ model representation of controlled plant. This representation was chosen in order to achieve lower sampling time periods and mainly better numerical stability of identification process. control part of algorithm utilizes digital PID controller whose parameters are designed by pole placement method. Developed program equipment works under realtime operating system RTMON for HCS08 which was created on our department. Functionality of the controller was verified by controlling two different educational heat plants models which are used in laboratory lessons of Theory of Automatic control subject.

关键词： Microcontrollers

来源：评论

学校读者我要写书评

暂无评论

Artificial neural networks broken rotor bars induction motor fault detection

Artificial neural networks broken rotor bars induction motor...

引用

10th Symposium on Neural Network Applications in Electrical engineering, NEUREL-2010

作者： Matić, Dragan Kulić, Filip Climente-Alarcon, Vincente Puche-Panadero, Ruben Faculty of Technical Science Department for Automation and System Control Trg Dositeja Obradovića 6 21000 Novi Sad Serbia Polytechnic University of Valencia Department of Electrical Engineering Comino de Vera 46020 Valencia Spain

ISBN: (纸本)9781424488209

Paper deals with application of online rotor broken bar fault detection via artificial neural networks. Fault can be detected by monitoring abnormalities of the spectrum amplitudes at certain frequencies in the motor current spectrum. These discriminative features are used for training of feed-forward backpropagation artificial neural network. Trained network is capable to successfully classify induction motor rotor condition. Results are presented in tables and figures. © 2010 IEEE.

关键词： Neural networks

来源：评论

学校读者我要写书评

暂无评论

RETRACTED ARTICLE: Material inner defect detection by a vibration spectrum analysis

RETRACTED ARTICLE: Material inner defect detection by a vibr...

引用

作者： Krejcar, Ondrej Frischer, Robert Dept. of Measurement and Control Center for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava Czech Republic Dept. of Automation and Computing in Metallurgy VSB Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424474806

In this paper is described possibility of nondestructive diagnostics of solid objects by software analysis of vibration spectrum. With using platform MATLAB, we can process and evaluate information from accelerometer, which is placed on the measured object The analog signal is digitized by special I/O device dSAPCE CP-1104 and then processed offline with FFT (Fast Fourier Transform). The power spectrum is then examined by developed evaluating procedures and individual results are displayed in bar graph. When we take a look on results, there is an evidently correlation between spectrum and examining object (inner defects). © 2010 IEEE.

关键词： Spectrum analysis

来源：评论

学校读者我要写书评

暂无评论

Underlying system using dynamic clustering and structural similarity

Underlying system using dynamic clustering and structural si...

引用

2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010

作者： Hernando Colina, M. Eliezer Castañeda, M. Wladimir Rodríguez, G. Carlos Parra, O. University of Pamplona Engineering Faculty Systems Engineering Department Pamplona Norte de Santander Colombia Automation and Control Department University of Andes System School Sede la Hechicera Estado Mérida Mérida Venezuela Department of Computer Engineering Faculty System School Sede la Hechicera Estado Mérida Mérida Venezuela

ISBN: (纸本)9781424469208

we propose a new perspective on the identification of linear dynamic system using structural similarity. The proposal consists in the meaningful exploration of each model, specifically behavior of the state variable. The decomposition of the behavior of a state variable in different modes of behavior of a system, each one has a different set of weights and shows different patterns of behavior. These weights are more significant than eigenvalue to develop a new technique for identifying linear system and invariants over time. We use two methods based on different areas of knowledge such as linear algebra and statistics. This paper is a conceptual proof that enriches the implementation and validity not only from point of view algorithmic likewise physic mathematical. © 2010 IEEE.

关键词： Artificial intelligence

来源：评论

学校读者我要写书评

暂无评论

Research on the control station system for a shape-shifting search and rescue robot

Research on the control station system for a shape-shifting ...

引用

2010 IEEE International Conference on Robotics and Biomimetics, ROBIO 2010

作者： Wang, Minghui Wang, Nan Wu, Chengdong Li, Bin State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China Information and Control Engineering Faculty Shenyang JianZhu University Shenyang 110168 China College of Information Science and Engineering Northeastern University Shenyang 110004 China

ISBN: (纸本)9781424493173

In conformity with the request for search and rescue application, the design criterions of human-robot interaction are proposed. Based on the human-robot interaction, the control station system for the shape-shifting search and rescue robot is designed. The system mainly has four features, which are completely perceptive information, flexible control, friendly interface and strong interaction. The experiments demonstrate that the control station system for search and rescue robots can control motion and exchange the multi-channel information in the complex simulated after-earthquake environment. Thus, feasibility and validity of the control station system have been proved in the fields of search and rescue. © 2010 IEEE.

关键词： Human robot interaction

来源：评论

学校读者我要写书评

暂无评论

Behavior of winding to ground fault in transformer windings using discrete wavelet transform

Behavior of winding to ground fault in transformer windings ...

引用

4th IASTED Asian Conference on Power and Energy Systems, AsiaPES 2010

作者： Pothisarn, Chaichan Ngaopitakkul, Atthapol Pongchaisrikul, Worravut Apisit, Chaowat Jonpermpoonpol, Saridroje Department of Electrical Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand Distribution Control Section Automation System Division Provincial Electricity Authority 200 Ngam Wong Wan Road Jatujak Bangkok 10900 Thailand

ISBN: (纸本)9780889868557

In the literature for fault detection, most of research works have never been mentioned about the high frequency transformer including capacitances. This paper presents behaviour of winding to ground fault signals in a three-phase two-winding transformer. The advantage of the discrete wavelet transform (DWT) is that the band of analysis can be fine adjusted so that high frequency components and low frequency components are detected precisely, consequently DWT is considered herein. The fault is simulated using ATP/EMTP and the behaviour analysis of signals is performed using DWT. The variation of high frequency components of differential current signals is proposed in this paper. The results obtained from the analysis will be useful in the development of a detect fault scheme for power transformer in the future.

关键词： Power transformers

来源：评论

学校读者我要写书评

暂无评论

Identification and MPC control of a Circulation Fluidized Bed Boiler Using an LPV Model

引用

IFAC Proceedings Volumes 2010年第5期43卷 853-858页

作者： Jiangyin Huang Guoli Ji Yucai Zhu Wei Lin Department of Automation Xiamen University Xiamen 361005 China (Tel: ***) Control Systems Faculty of Electrical Engineering Eindhoven University of Technology The Netherlands

This work studies the identification and control of circulation fluidized bed (CFB) boilers. The CFB boiler under investigation shows strong nonlinearity due to big changes of steam load. A linear parameter varying (LPV) model is used to represent the process dynamics and used in control. The steam flow is used as the working-point variable (scheduling variable) of LPV model. Multivariable plant tests were carried out and a LPV model and a linear model were identified. The identification results of the industrial CFB boiler show that the LPV model has much higher accuracy than the linear model. The simulation studies for the MPC control of the CFB boiler have been performed using both the LPV model and the linear model. The simulation results show that the MPC using the LPV model performs better than the MPC using the linear model.

关键词： circulation fluidized bed (CFB) boilers identification LPV model MPC control

来源：评论

学校读者我要写书评

暂无评论

Some further results on the stability analysis of a type of t-s fuzzycontrol systems in the frequency: Domain

引用

ICIC Express Letters 2010年第3期4卷 659-666页

作者： Huang, Xianlin Cao, Kairui Ban, Xiaojun Gao, Xiao-Zhi Department of Control Theory and Engineering Harbin Institute of Technology Harbin China Department of Electrical Engineering Faculty of ElectronicsCommunications and Automation Aalto University Espoo Finland

In this paper, two new stability conditions with graphical interpretationsin the frequency domain are proposed, for a, type of Takagi-Sugeno (T-S) fuzzycontrol systems, one is based, on the circle criterion and, the other is based,on the Popov criterion. These two conditions are compared with an existingLinear Matrix Inequality (LMI)-based, stability condition. The results show thatthe circle criterion-based, condition and, LMI-based, condition are equivalentto each other, and, the Popov criterion-based, condition is the leastconservative one. A numerical simulation is provided, to validate the results ofcomparison as well as demonstrate the efficiency of our frequency domain-basedconditions. ICIC International © 2010.

关键词： Linear matrix inequalities

来源：评论

学校读者我要写书评

暂无评论

Sustainable Acrobot walking based on the swing phase exponentially stable tracking

Sustainable Acrobot walking based on the swing phase exponen...

引用

ASME 2010 Dynamic Systems and control Conference, DSCC2010

作者： Anderle, Milan Čelikovský, Sergej Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technická 2 166 27 Prague Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod Vodárenskou věží 4 182 08 Prague Czech Republic

ISBN: (纸本)9780791844182

The Acrobot is the simplest walking like underactuated system which at the same time comprises all typical difficulties of the underactuated walking. In particular, efficient algorithms for the Acrobot walking may be generalized to more general walking like configurations through their special decomposition. The main contribution of this paper is to design the algorithm how to compute a cyclic walking like trajectory which is crucial to have the hybrid exponentially stable multi step tracking of this trajectory later on. Notice, that such a design is not an easy task as the walking trajectory initial conditions are changed along the single step into different end conditions and these should be subsequently mapped by the impact map into the same initial condition for the second step. For this sake we use the special partial linearized coordinates to demonstrate their advantage for the design of the cyclic walking trajectory. Such a trajectory is then used to demonstrate the sustainable walking based on the swing phase exponentially stable tracking via computer simulations. Copyright © 2010 by ASME.

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

Position feedback tracking of the acrobot walking-like trajectory based on the reduced velocity observer

Position feedback tracking of the acrobot walking-like traje...

引用

作者： Anderle, Milan Čelikovský, Sergej Czech Technical University in Prague Faculty of Electrical Engineering Department of Control Engineering Technická 2 166 27 Prague Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod Vodárenskou věží 4 182 08 Prague Czech Republic

ISBN: (纸本)9783902661807

This paper provides the algorithm how to exponentially track any trajectory of the Acrobot based on the knowledge of two position variables only. Namely, it aims to design a special reduced observer for the Acrobot angular velocities based on the respective angles measurements and then to combine this observer with the earlier developed full state feedback controllers. For the Acrobot with point feet it is not an easy task to measure the angle between its stance leg and the surface. This paper suggests to measure instead of this angle a certain distance using a laser beam sensor and then to compute the stance angle from that distance. For this purpose, the optical laser distance sensor was selected, purchased and analyzed. Remarkably, the corresponding computations maintain basically the same order of precision for the computed angle as achieved for that measured distance. The stability of both the reduced observer and the overall output feedback tracking is demonstrated as well. Both of them are based on the Acrobot's model partial exact feedback linearization of order 3. The developed algorithm is then applied to the position feedback tracking of the walking-like trajectory of the Acrobot during a swing phase of a single step. Besides the theoretical analysis, the approach is demonstrated via numerical simulations. © 2010 IFAC.

关键词： Trajectories

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：