检索结果-内蒙古大学图书馆

15th International Conference on System Theory, Control and Computing, ICSTCC 2011

作者： Nobuyama, Eitaku Aoyagi, Takahiko Kami, Yasushi Department of Systems Design and Informatics Kyushu Institute of Technology Iizuka-city Fukuoka 820-8502 Japan Department of Electrical and Computer Engineering Akashi National Collage of Technology Akashi-city Hyogo 674-8501 Japan

ISBN: (纸本)9781457711732

Robust control problems for nonlinear systems are usually formulated as L2-induced norm minimization problems and it is known that those problems are reduced to the solvability of Hamilton-Jacobi equations. However, in the case of bilinear systems the usual L2-induced norm minimization problem leads to an obvious solution (the zero input). To avoid the obvious solution Simizu et al. (1997) introduced nonlinear weights on the evaluated signal and proposed a design method using linearization of the state-dependent matrix Riccati inequality derived from the Hamilton-Jacobi equation. In contrast to this, the purpose of the present paper is to propose a new design method using SOS (Sum-of-Squares) optimization technique without linearization. © 2011 Faculty of Auto Control.

关键词： Linearization

来源：评论

学校读者我要写书评

暂无评论

Improved supervision of NN's AOA Determination with limited 1-D Phased-Array Training Data

Improved supervision of NN's AOA Determination with limited ...

引用

IEEE National Aerospace and Electronics Conference

作者： Kevin Van Sickle Hoda S. Abdel-Aty-Zohdy Microelectronics & Bio-Inspired Systems Design Lab Department of Electrical and Computer Engineering Oakland University

ISBN: (纸本)9781457710407

A sixteen-channel linear phased array radar is calibrated by means of Artificial Neural Network (ANN). Limited data are used to train the various layers of the network, for Angle of Arrival (AOA) determinacy. This is designed to increase speed of operation and to prevent over fitting. The designed simulator generates time-series data sets representing continuous span of AOA. The generated data-sets are used in multilayer feed-forward NNs to find the phase, which is then used as inputs to Spiking Neural Network (SNN) o determine AOA. SNNs are used for hardware implementation feasibility. The designed simulator improved the accuracy of AOA determination, and opens the door for a wide variety of radar classification applications.

关键词： Simulation SNN AOA Phased Array Training-Based Limited Data Set Classification ANGLE OF ATTACK SNN gene phased array simulating hierarchical network Continuous spans

来源：评论

学校读者我要写书评

暂无评论

A small-gain methodology for networks of iISS retarded systems based on Lyapunov-Krasovskii functionals

A small-gain methodology for networks of iISS retarded syste...

引用

作者： Ito, Hiroshi Jiang, Zhong-Ping Pepe, Pierdomenico Department of Systems Design and Informatics Kyushu Institute of Technology Iizuka Fukuoka 820-8502 Japan Department of Electrical and Computer Engineering Polytechnic Institute of New York University Brooklyn NY 11201 United States Department of Electrical and Information Engineering University of l'Aquila 67040 Poggio di Roio L'Aquila Italy

ISBN: (纸本)9783902661937

A problem of assessing stability of retarded dynamical networks is solved in this paper. Subsystems are assumed to be integral input-to-state stable (iISS). Time-delays are allowed to reside in both subsystems and interconnection channels, and may be both discrete and distributed. No assumption is made on the interconnection topology. This paper develops a small-gain methodology for constructing a Lyapunov-Krasovskii functional of such a network. © 2011 IFAC.

关键词： Time delay

来源：评论

学校读者我要写书评

暂无评论

Spiking Neural Networks' Model with Spike Frequency Adaptation for E-nose

Spiking Neural Networks' Model with Spike Frequency Adaptati...

引用

IEEE National Aerospace and Electronics Conference

作者： Shirin Badiei Hoda Abdel-Aty-Zohdy Microelectronics & Bio-Inspired Systems Design Lab Dept. of Electrical and Computer Engineering Oakland University

ISBN: (纸本)9781457710407

We create a spiking neural network of Integrate and Fire neurons with spike frequency adaption based on parameters adjusted for our e-nose device, and investigate the use of this model for odor classification. Addition of spike frequency adaptation term brings the model closer to the response of the olfactory system. Data from Cyranose 320, a polymer based 32-sensor array, is used to test the system and create unique dynamic spiking patterns. The results for four analytes are presented.

关键词： Spiking neural networks E-nose

来源：评论

学校读者我要写书评

暂无评论

A small-gain theorem and construction of sum-type Lyapunov functions for networks of iISS systems

A small-gain theorem and construction of sum-type Lyapunov f...

引用

作者： Ito, Hiroshi Jiang, Zhong-Ping Dashkovskiy, Sergey N. Ruffer, Björn S. Department of Systems Design and Informatics Kyushu Institute of Technology 680-4 Kawazu Iizuka 820-8502 Japan Department of Electrical and Computer Engineering Polytechnic Institute of New York University Six Metrotech Center Brooklyn NY 11201 United States Department of Mathematics and Computer Science University of Bremen Germany Department of Electrical Engineering and I.T. University of Paderborn 33098 Paderborn Germany

ISBN: (纸本)9781457700804

This paper gives a solution to the problem of verifying stability of networks consisting of integral input-to-state stable (iISS) subsystems. The iISS small-gain theorem developed recently has been restricted to interconnection of two subsystems. For large-scale systems, stability criteria relying only on gain-type information have been successful only in dealing with input-to-state stable stable (ISS) subsystems. To address the stability problem involving iISS subsystems interconnected in general structure, this paper shows how to construct Lyapunov functions of the network by means of nonlinear sum of individual Lyapunov functions of subsystems given in a dissipation formulation under an appropriate small-gain condition. © 2011 AACC American Automatic Control Council.

关键词： Lyapunov functions

来源：评论

学校读者我要写书评

暂无评论

Active vibration control of a light and flexible stress ribbon footbridge using pneumatic muscles

引用

IFAC Proceedings Volumes 2011年第1期44卷 911-916页

作者： A. Bleicher T. Schauer M. Valtin J. Raisch M. Schlaich Berlin Institute of Technology (TU Berlin) Berlin Germany Chair of Conceptual and Structural Design Department of Civil and Structural Engineering Control Systems Group Department of Electrical Engineering and Computer Science

Abstract This paper describes the development of an active vibration control system for a light and flexible stress ribbon footbridge. The 13 m span Carbon Fiber Reinforced Plastics (CFRP) stress ribbon bridge was built in the laboratory of the Department of Civil and Structural engineering, Berlin Institute of Technology. Its lightness and flexibility result in high vibration sensitivity. To reduce pedestrian-induced vibrations, very light pneumatic muscle actuators are placed at handrail level introducing control forces. First, a reduced discretized analytical model is derived for the stress ribbon bridge. To verify the analytical prediction, experiments without feedback control are conducted. Based on this model, a velocity feedback control strategy is designed to actively control first mode vibrations. To handle the nonlinearities of the muscle actuator a subsidiary nonlinear force controller is implemented based on exact linearisation methods. The stability of the entire closed-loop system with actuator saturation is investigated by the Popov Criterion. Control performance is verified by experiments. It is demonstrated that handrail introduced forces can efficiently control the first mode response.

关键词： active vibration control light-weight structure stress ribbon bridge pedestrian induced vibration pneumatic muscle actuator velocity feedback control exact linearization

来源：评论

学校读者我要写书评

暂无评论

Adaptive multi-resolution CRF-based contour tracking

Adaptive multi-resolution CRF-based contour tracking

引用

IEEE International Conference on Image Processing

作者： F. Moayedi Z. Azimifar P. Fieguth A. Kazemi School of Electrical and Computer Engineering Shiraz University Shiraz Iran Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada

This paper presents a novel tracker, based on combining a linear chain conditional random field (CRF) adaptive multi-resolution segmentation with an unscented Kalman filter (UKF). Specifically, the proposed method combines multiple features and multiple resolutions to facilitate video tracking. The advantages of our method lie in its speed and robustness. Speed is dramatically improved by taking into account multiple resolutions in one dimensional CRF-based segmentation. Robustness is achieved by using multiple cues. The performance of the proposed method is demonstrated in human head tracking with a non-stationary camera. Results show that we are able to maintain real-time processing on quite generous video sequences. The paper argues that our approach is faster, more efficient and more robust than the conventional UKF.

关键词： Hidden Markov models Target tracking Visualization Feature extraction Adaptation models Image edge detection

来源：评论

学校读者我要写书评

暂无评论

Optimal Charging of Plug-in Hybrid Electric Vehicles in Smart Grids

Optimal Charging of Plug-in Hybrid Electric Vehicles in Smar...

引用

IEEE Power and Energy Society General Meeting

作者： Somayeh Sojoudi Steven H. Low Department of Control and Dynamical Systems California Institute of Technology Computer Science and Electrical Engineering Departments California Institute of Technology

ISBN: (纸本)9781457710001

Plug-in hybrid electric vehicles (PHEVs) play an important role in making a greener future. Given a group of PHEVs distributed across a power network equipped with the smart grid technology (e.g. wireless communication devices), the objective of this paper is to study how to schedule the charging of the PHEV batteries. To this end, we assume that each battery must be fully charged by a pre-specified time, and that the charging rate can be time-varying at discrete-time instants. The scheduling problem for the PHEV charging can be augmented into the optimal power flow (OPF) problem to obtain a joint OPF-charging (dynamic) optimization. A solution to this highly nonconvex problem optimizes the network performance by minimizing the generation and charging costs while satisfying the network, physical and inelastic-load constraints. A global optimum to the joint OPF-charging optimization can be found efficiently in polynomial time by solving its convex dual problem whenever the duality gap is zero for the joint OPF-charging problem. It is shown in a recent work that the duality gap is expected to be zero for the classical OPF problem. We build on this result and prove that the duality gap is zero for the joint OPF-charging optimization if it is zero for the classical OPF problem. The results of this work are applied to the IEEE 14 bus system.

关键词： Smart grids optimal charging charging Polynomial time Power grids CHARGING(ACCOUNTTNG) Zero Joints Joints charging rate Batteries Hybrid electric vehicles

来源：评论

学校读者我要写书评

暂无评论

Cooperative inter-vehicular communications in highway traffic

Cooperative inter-vehicular communications in highway traffi...

引用

Canadian Conference on electrical and computer engineering (CCECE)

作者： Mohamed Fathy Feteiha Murat Uysal Abdul Rahim Ahmad Department of Electrical and Computer Engineering University of Waterloo Waterloo Ontario Canada Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

In this paper, we investigate the performance of a single relay assisted cooperative vehicular network in a highway traffic scenario. Source and relaying vehicles are assumed to be traveling in the same direction with similar speeds. This results in a relative velocity nearly equal to zero and leads to a frequency-flat and time-flat fading in source-to relay link. On the other hand, source-to-destination and relay to-destination links are modeled as doubly-selective fading. To handle spreading in time and frequency, we propose a precoded cooperative scheme to exploit delay and Doppler spreads to our advantage. Under the assumption of amplify-and-forward relaying with orthogonal cooperation protocol, we derive a pairwise error probability expression and demonstrate the achievable diversity gains. We further conduct Monte Carlo simulations to confirm the analytical derivations and present the error rate performance of the proposed scheme with imperfect channel estimation.

关键词： Vehicles Fading Relays Time frequency analysis Diversity methods Signal to noise ratio Bit error rate

来源：评论

学校读者我要写书评

暂无评论

Spatial-and-Temporal-Weighted Structure from Motion

Spatial-and-Temporal-Weighted Structure from Motion

引用

Canadian Conference on computer and Robot Vision, CRV

作者： Guanghui Wang John S. Zelek Q.M. Jonathan Wu Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

The paper focuses on the problem of structure from motion and proposes a spatial-and-temporal-weighted factorization algorithm. The contributions of the paper are as follows: First, it is demonstrated that the image reprojection error is generally in proportion to the error magnitude contained in the image. Second, the error distribution contained in the measurement matrix is modelled spatially and temporally from the image reprojection residuals. Third, based on the estimated error distribution, a spatial-and-temporal-weighted factorization algorithm is proposed to handle the uncertainty caused by significant image noises. Compared with existing approaches, the proposed technique does not require a prior information of image measurement, and it is easy to implement. Extensive experiments on synthetic data and real images are performed to validate the proposed method.

关键词： Noise Uncertainty Shape Tracking Matrix decomposition Cameras Robustness

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：