检索结果-内蒙古大学图书馆

UKF Based Nonlinear Filtering for Parameter Estimation in Linear Systems with Correlated Noise

IFAC Proceedings Volumes 2008年第2期41卷 474-479页

作者： Jiahe Xu Tatjana Kolemisevska-Gugulovska Xiuping Zheng Yuanwei Jing Georgi M. Dimirovski Institute of Information Science and Engineering Northeastern University Shenyang Liaoning 110004 P.R. of China Faculty of EE&IT SS Cyril and Methodius University 1000 Skopje Rep. of Macedonia Dogus University of Istanbul Faculty of Engineering TR-347222 Istanbul Rep. of Turkey and with SS

Based on the Unscented Kalman Filter (UKF), the nonlinear filter is presented for parameter estimation in linear system with correlated noise where the unknown parameters are estimated as a part of an enlarged state vector. To avoid the computational burden in determining the state estimates when only the parameter estimates are required, a new form of UKF, where the state consists only of the parameters to be estimated, is proposed. The algorithm is based on the inclusion of the computed residuals in the observation matrix of a state representation of the system. Convergence properties of the proposed algorithm are analyzed and ensured. The algorithm is verified by using Matlab simulations on the vehicle navigation systems with aided GPS.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A solution to the tracking control problem for switched linear systems with time-varying delays

A solution to the tracking control problem for switched line...

引用

IEEE Conference on Decision and Control

作者： Qing-Kui Li Georgi M. Dimirovski Jun Zhao Key Laboratory of Process Industry Automation of Ministry of Education School of Information Science and Engineering Northeastern University Shenyang China Faculty of FEIT SS Cyril and Methodius University Skopje Macedonia Faculty of Engineering Dogus University Istanbul Turkey

ISBN: (纸本)9781424431236

We investigate the tracking control problem for switched linear time-varying delays systems with stabilizable and unstabilizable subsystems. Sufficient conditions for the solvability of the tracking control problem are developed. The tracking control problem of a switched time-varying delays system with stabilizable and unstabilizable subsystems is solvable if the stabilizable and unstabilizable subsystems satisfy certain conditions and admissible switching law among them. Average dwell time approach and piecewise Lyapunov functional methods are utilized to the stability analysis and controller design. A simulation example shows the effectiveness of the proposed method.

关键词： Control systems Linear systems Time varying systems Delay systems Switched systems Communication switching Stability analysis Communication system control Automatic control Sufficient conditions

来源：评论

学校读者我要写书评

暂无评论

Reliable Adaptive Control for Switched Fuzzy Systems

引用

IFAC Proceedings Volumes 2008年第2期41卷 7636-7641页

作者： Le Zhang Cvetko Andreeski Georgi M. Dimirovski Yuan-Wei Jing Control Science Institute of the School of Information Science and Engineering Northeastern University Shenyang 110004 P.R. China Faculty of Tourism and Hospitality in Ohrid St Clement Ohridski University 6000 Ohrid Rep of Macedonia Department of Computer Engineering Dogus University Kadikoy TR-34722 Istanbul Turkey

A model of a kind of uncertain switched fuzzy systems is presented first, in which each subsystem is an uncertain fuzzy system. Then the robust stabilization problem to the system is studied and a solution proposed. When the upper bounds of the disturbances are unknown, and the actuator is serious failure and the residual part of actuator can not make original system stable, a reliable robust adaptive controller is constructed to guarantee the closed-loop system is uniformly ultimately bounded via using switching technique and multiple Lyapunov function approach. The switching strategy achieving system uniformly ultimately bounded of the uncertain switched fuzzy system is given. An illustrative example is given that demonstrates the feasibility and the effectiveness of the proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Optimal Fractional Order Proportional Integral Controller for Varying Time-Delay Systems

引用

IFAC Proceedings Volumes 2008年第2期41卷 4910-4915页

作者： Varsha Bhambhani YangQuan Chen Dingyü Xue Center for Self-Organizing and Intelligent Systems(CSOIS) Dept. of Electrical and Computer Engineering Utah State University 4120 Old Main Hill Logan UT 84322-4120 USA Faculty of Information Science and Engineering Northeastern University Shenyang 110004 P. R. China

In many industrial processes, the first order plus time delay (FOPDT) is still being widely used. FOPDT systems are also called “KLT systems (gain, delay, and time constant).” Considering uncertainties in the time delay, this paper attempts to answer this research question: “ Will a fractional order controller help and do better? “ In this paper, we first focus on fractional order proportional and integral controller (FOPI) for varying time-delay systems. Based on our previously proposed FOPI controller tuning rules using fractional M s constrained integral gain optimization (F-MIGO), we tried to simultaneously maximize the jitter margin and ITAE performance (minimize ITAE performance index) for a set of hundred KLT systems having different time-constants and time-delay values. We observed that the optimization results in enlarged jitter margin of all systems at expense of a slight decrease in ITAE performance of delay dominated systems. Further, the F-MIGO optimization based tuning rules were summarized by approximation of optimized gain parameters and fractional orders α of the FOPI controller. Simulation results are presented to verify the proposed new tuning rules for best jitter margin and ITAE performance.

关键词： Fractional calculus fractional order controller varying time-delay system FMIGO algorithm multi-objective Optimization jitter margin ITAE performance index

来源：评论

学校读者我要写书评

暂无评论

A hybrid immune algorithm for solving Fourth-Party Logistics routing optimizing problem

A hybrid immune algorithm for solving Fourth-Party Logistics...

引用

Congress on Evolutionary Computation

作者： Min Huang Guihua Bo Wei Tong W.H. Ip Xingwei Wang Faculty of Information Science and Engineering Northeastern University Shenyang China Key Laboratory of Integrated Automation of Process Industry Ministry of Education Shenyang Liaoning China Department of Industrial and Systems Engineering Hong Kong Polytechnic University Hong Kong China

Recently, fourth-party logistics (4PL) is receiving considerable attention in the manufacturing and retail industries. However, due to the complexity, the research of routing problem in 4PL is in an initial stage. The existing study does not consider the complicated problem with node-edge property. This paper studies the node-to-node routing problem in 4PL. A mathematical model is set up based on nonlinear integer programming and multigraph. With respect to the problempsilas characteristics a hybrid immune algorithm is designed. The simulation shows that the hybrid immune algorithm is effective for solving the problem and provides an efficient method for making decision on routing in 4PL.

关键词： Algorithm design and analysis Routing Logistics Companies Time factors TV Loading

来源：评论

学校读者我要写书评

暂无评论

Modeling and Analysis of an Enhanced Compliant Parallel Mechanism for High Accuracy Micro Motion

Modeling and Analysis of an Enhanced Compliant Parallel Mech...

引用

7th World Congress on Intelligent Control and Automation (WCICA 2008), vol.6

作者： Dan Zhang Kayla Viegas Zhen Gao Yunjian Ge Faculty of Engineering and Applied Sciences University of Ontario Institute of Technology (UOIT) Oshawa ONT Canada Department of Automation University of Science and Technology Hefei Anhui China State Key laboratory of Robot Sensing Systems Institute of Intelligent Machines Chinese Academy and Sciences Hefei Anhui China

There is an increasing requirement, in a variety of fields, for the ability to make microscopic movements or to position items with high degree of accuracy. In this paper, a parallel mechanism with prismatic actuators which encompasses three degrees of freedom and can produce motion on a microscopic level is proposed and developed. In order to produce such motion, the mechanism is composed of compliant joints and links and flexure hinges, so it may also be referred to as a compliant mechanism. First, the detailed design of motion systems for the machine structure is introduced, followed by the mathematical analysis based on kinematics model of the presented mechanism. Finally, a comprehensive Finite Element Method analysis is carried out for the device optimization.

关键词： Parallel mechanism Compliant mechanism Micro motion Finite Element Method

来源：评论

学校读者我要写书评

暂无评论

Chemical potential shift of Fe3−xVxSi studied by hard x-ray photoemission

引用

Physical Review B 2008年第20期78卷 205113-205113页

作者： Y. T. Cui A. Kimura K. Miyamoto M. Taniguchi T. Xie S. Qiao K. Shimada H. Namatame E. Ikenaga K. Kobayashi Hsin Lin S. Kaprzyk A. Bansil O. Nashima T. Kanomata Graduate School of Science Hiroshima University Higashi-Hiroshima 739-8526 Japan Hiroshima Synchrotron Radiation Center Hiroshima University Higashi-Hiroshima 739-0046 Japan Advanced Materials Laboratory Physics Department and Surface Physics Laboratory Fudan University Shanghai 200433 China Japan Synchrotron Radiation Research Institute SPring-8 Sayo Hyogo 679-5198 Japan National Institute for Materials Science SPring-8 Sayo Hyogo 679-5198 Japan Department of Physics Northeastern University Boston Massachusetts 02115 USA Department of Physics Northeastern University Boston Massachusetts 02115 USA and Faculty of Physics and Nuclear Techniques Academy of Mining and Metallurgy al. Mickiewicza 30 30-073 Kraków Poland Faculty of Engineering Tohoku Gakuin University Tagajo 985-8537 Japan

Core-level photoemission spectra of Fe3−xVxSi alloys with inequivalent FeI and FeII sites are investigated via hard x-ray photoemission spectroscopy over the entire doping range x=0–1. All the measured 1s core-level peaks are found to shift to higher binding energy with increasing V concentration. First-principles, all electron charge- and spin-self-consistent electronic structure computations within the framework of the local-spin-density approximation are used to interpret the experimental results. The measured size of energy shift in going from x=0 to 1 is consistent with the corresponding theoretical value for the FeII and Si 1s core levels, whereas for the FeI and V core levels the computed shifts are generally larger than the experimental values. We ascribe these discrepancies to the effects of the core-hole screening in the final state which are not accounted for in the computations. In a rigid-band model the chemical potential and the core-level binding energies are expected to decrease with V doping as electrons are depleted from the Fermi energy. The observed increase in the binding energy of core levels thus supports a picture of the electronic structure where V doping induces a “pseudogap” or a region of reduced density of states in the vicinity of the Fermi energy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Index for supporting XML structural join efficiently and effectively-CATI

引用

Jisuanji Yanjiu yu Fazhan/Computer Research and Development 2007年第1期44卷 111-118页

作者： Yu, Yaxin Wang, Guoren Zhang, Haining Li, Jianxin Faculty of Information Science and Engineering Northeastern University Shenyang 110004 China

Evaluating structural joins is a crucial operation for performance of XML queries. Proposed in this paper is a novel index CATI, namely, compact ancestor tree index, which can support XML structural join effectively. The basic idea of CATI is to extract ancestor node occurrences from a given ancestor-descendant query (A-D query) pattern or a twig query pattern to establish a compact ancestor tree, and all descendant occurrences of an ancestor node will be linked behind the direct ancestor node in the ancestor tree. Since the stack-tree based join algorithm is a widely used technique due to its excellent join efficiency, the performance of CATI is compared with stack-tree for A-D query and twig query via extensive experiments on a real XML test database. The experimental results show that the performance of the CATI based structural join has significant improvement gains over the stack-tree based join.

关键词： XML

来源：评论

学校读者我要写书评

暂无评论

UKF design and stability for nonlinear stochastic systems with correlated noises

UKF design and stability for nonlinear stochastic systems wi...

引用

46th IEEE Conference on Decision and Control 2007, CDC

作者： Jiahe, Xu Dimirovski, Georgi M. Yuanwei, Jing Chao, Shen IEEE Faculty of Information Science and Engineering Northeastern University 110004 Shenyang Liaoning China Faculty of Engineering Computer Engg. Dept. Dogus University of Istanbul TR-347222 Istanbul Turkey

ISBN: (纸本)1424414989

Based on the standard Unscented Kalman Filter (UKF), the modified UKF is presented for nonlinear stochastic systems with correlated noises. The modified UKF consists of the prediction equations and the measurement equations, and holds the sigma points chosen by Unscented Transformation (UT). The stability of the modified UKF for the nonlinear stochastic system with correlated noises is analyzed. It is proved that under certain conditions, the estimation error of the UKF remains bounded. These results are verified by using Matlab simulations on two numerical example systems. © 2007 IEEE.

关键词： Nonlinear control systems

来源：评论

学校读者我要写书评

暂无评论

Simulated annealing-reinforcement learning algorithm for ABR traffic control of ATM networks

Simulated annealing-reinforcement learning algorithm for ABR...

引用

46th IEEE Conference on Decision and Control 2007, CDC

作者： Xin, Li Xiaojun, Shen Yuanwei, Jing Siying, Zhang Faculty of Information Science and Engineering Northeastern University Shenyang Liaoning 110004 China Department of Computer Networking School of Computing and Engineering University of Missouri Kansas City United States

ISBN: (纸本)1424414989

For the congestion problems in asynchronous transfer mode (ATM) networks, a hybrid intelligent controller based on simulated annealing (SA) and reinforcement learning (RL) algorithm is proposed. The SA algorithm is a powerful way to solve hard combinatorial optimization problems, which is used to adjust the parameters of the controller. The RL algorithm shows the particular superiority in ATM networks, which is independent of the mathematic model and just needs simple fuzzy information obtained through trial-and-error and interaction with the environment. With the advantages of the two algorithms, the proposed controller forces the queue size in the multiplexer buffer to the desired value by adjusting the source transmission rate of the available bit rate (ABR) service. Simulation results show that the proposed method can promote the performance of the networks and avoid the occurrence of congestion effectively. © 2007 IEEE.

关键词： Reinforcement learning

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：