检索结果-内蒙古大学图书馆

Optimal guaranteed cost control for fuzzy descriptor systems with time-varying delay

Journal of Systems engineering and Electronics 2008年第3期19卷 584-591页

作者： Tian Weihua1,2 & Zhang Huaguang3 1. School of Information Science and engineering, Northeastern Univ., Shenyang 110004, P. R. China 2. dept. of automatic control, Shenyang Inst. of engineering, Shenyang 110136, P. R. China 3. School of Information Science and engineering, Northeastern Univ., Shenyang 110004, P. R. China. (Received December 27, 2006) [a]School of Information Science and Engineering Northeastern Univ. Shenyang 110004 P. R. China [b]Dept. of Automatic Control Shenyang Inst. of Engineering Shenyang 110136 P. R. China [c]School of Information Science and Engineering Northeastern Univ. Shenyang 110004 P. R. China

Based on the delay-independent rule, the problem of optimal guaranteed cost control for a class of Takagi-Sugeno （T-S） fuzzy descriptor systems with time-varying delay is studied. A linear quadratic cost function is considered as the performance index of the closed-loop system. Sufficient conditions for the existence of guaranteed cost controllers via state feedback are given in terms of linear matrix inequalities （LMIs）, and the design of an optimal guaranteed cost controller can be reduced to a convex optimization problem. It is shown that the designed controller not only guarantees the asymptotic stability of the closed-loop fuzzy descriptor delay system, but also provides an optimized upper bound of the guaranteed cost. At last, a numerical example is given to illustrate the effectiveness of the proposed method and the perfect performance of the optimal guaranteed cost controller.

关键词： fuzzy descriptor systems optimal guaranteed cost control time-varying delay linear matrix inequalities （LMIs）.

来源：评论

学校读者我要写书评

暂无评论

An efficient distributed navigation algorithm for mobile robot

An efficient distributed navigation algorithm for mobile rob...

引用

7th International Symposium on Instrumentation and control Technology: Measurement Theory and Systems and Aeronautical Equipment

作者： Yang, Xiuping Liu, Songyan Liu, Zhen School of Electronic Engineering Heilongjiang University 150080 Harbin China Dept. of Automatic Test and Control Harbin Institute of Technology 150001 Harbin China

ISBN: (纸本)9780819473622

An efficient distributed algorithm for mobile nodes of wireless sensor network (WSN) is proposed. A smart mobile robot is designed as the special node of WSN, and the nodes of WSN are deployed in the environment as signposts for the robot to follow. We use the RSSI value between the robot and other static nodes as the input of the navigation control system. The mobile robot state and navigation space are denoted by the RSSI potential field. Navigation directions are computed by using fuzzy logic method. To reduce the communication expense, each node within one hop communication range of robot is a distributed navigation unites. Then the fuzzy logic control centre will collect the control outputs from every beacon nodes and calculate the final outputs for mobile robot based on data fusion. The experimental results confirm that the navigation system based on WSN successfully achieved their assigned tasks.

关键词： Mobile robots

来源：评论

学校读者我要写书评

暂无评论

An optimal control method for biped robot with stable walking gait

An optimal control method for biped robot with stable walkin...

引用

2008 8th IEEE-RAS International Conference on Humanoid Robots, Humanoids 2008

作者： Phuong, Nguyen Thanh Kim, Dae Won Kim, Hak Kyeong Kim, Sang Bong Automatic Control Dept. Ky Thaut Cong Nghe University Vietnam Viet Nam School of Mechanical Engineering Pukyong National University Korea Republic of

ISBN: (纸本)9781424428229

This paper proposes an optimal control method for a 10 degree of freedom (DOF) biped robot with stable walking gait. The biped robot is modeled as a 3D inverted pendulum. From dynamic model of the 3D inverted pendulum and under the assumption that center of mass (COM) of the biped robot moves on a horizontal constraint plane, zero moment point (ZMP) equations of the biped robot depending on the coordinate of the center of the pelvis link obtained from the dynamic model of the biped robot are given based on the D'Alembert's principle. A walking pattern is generated based on ZMP tracking control systems that are constructed to track the ZMP of the biped robot to zigzag ZMP reference trajectory decided by the footprint of the biped robot. An optimal tracking controller is designed to control the ZMP tracking control system. From the trajectory of the COM of the biped robot and an arc reference input of the swinging leg, the inverse kinematics solved by the solid geometry method is used to compute the angles of each joint of the biped robot. The simulation and experimental results show the effectiveness of this proposed control method. © 2008 IEEE.

关键词： Inverted pendulum

来源：评论

学校读者我要写书评

暂无评论

Performance of MISO time reversal ultra-wideband over an 802.15.3a channel model

Performance of MISO time reversal ultra-wideband over an 802...

引用

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008

作者： Angélico, Bruno A. Burt, Phillip M. S. Jeszensky, Paul Jean E. Hodgkiss, William S. Abrão, Taufik Dept. of Telecommunications and Control Engineering Escola Politécnica of the University of São Paulo Brazil Dept. of Electrical and Computer Engineering University of California San Diego United States Dept. of Electrical Engineering State University of Londrina Brazil

ISBN: (纸本)9781424422043

This paper analyzes the performance of a baseband multiple-input single-output (MISO) time reversal ultra-wideband system (TR-UWB) over the IEEE 802.15.3a channel model. Two scenarios are considered, CM1 based on LOS (0-4m) channel measurements and ("VI3 based on NLOS (4-10m) channel measurements. A semi-analytical performance expression is derived and compared with simulation results in terms of the number of antenna elements, number of users, and transmission rate. The results show that the system performance is improved with an increase in the number of transmit antenna elements and that additional equalization and multiple access enhancement schemes are necessary for high transmission rates. © 2008 IEEE.

关键词： Antennas

来源：评论

学校读者我要写书评

暂无评论

Improvement of MISO single-user time reversal ultra-wideband using a DFE channel equalizer

Improvement of MISO single-user time reversal ultra-wideband...

引用

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008

作者： Angelico, Bruno A. Burt, Phillip M. S. Jeszensky, Paul Jean E. Hodgkiss, William S. Abrão, Taufik Dept. of Telecommunications and Control Engineering Escola Politécnica of the University of São Paulo Brazil Dept. of Electrical and Computer Engineering University of California San Diego United States Dept. of Electrical Engineering State University of Londrina Brazil

ISBN: (纸本)9781424422043

In this paper a baseband multiple-input single-output (MISO) time reversal ultra-wideband system (TR-UWB) incorporating a decision feedback equalizer (DFE) is evaluated over the scenarios CM1 and CM3 of the IEEE 802.15.3a channel model. A semi-analytical performance based on a Gaussian approximation is derived and compared with simulation results. The results show that such approach represents a good approximation for the bit error rate (HER) analysis, and that the DFE, as well as an increase in the number of transmit antennas, improve the system performance. © 2008 IEEE.

关键词： Decision feedback equalizers

来源：评论

学校读者我要写书评

暂无评论

Robust reliable guaranteed cost control for nonlinear singular stochastic systems with time delay

引用

Journal of Systems engineering and Electronics 2008年第4期19卷 791-798页

作者： Zhang Aiqing Fang Huajing Dept. of Control Science and Engineering Huazhong Univ. of Science and Technology Wuhan 430074 P. R. China Coll. of Mathematics and Computer Science Jianghan Univ. Wuhan 430056 P. R. China

To study the design problem of robust reliable guaranteed cost controller for nonlinear singular stochastic systems, the Takagi-Sugeno （T-S） fuzzy model is used to represent a nonlinear singular stochastic system with norm-bounded parameter uncertainties and time delay. Based on the linear matrix inequality （LMI） techniques and stability theory of stochastic differential equations, a stochastic Lyapunov function method is adopted to design a state feedback fuzzy controller. The resulting closed-loop fuzzy system is robustly reliable stochastically stable, and the corresponding quadratic cost function is guaranteed to be no more than a certain upper bound for all admissible uncertainties, as well as different actuator fault cases. A sufficient condition of existence and design method of robust reliable guaranteed cost controller is presented. Finally, a numerical simulation is given to illustrate the effectiveness of the proposed method.

关键词： fuzzy control reliable control LMI singular systems stochastic stability

来源：评论

学校读者我要写书评

暂无评论

Verification of Markov models of ageing power equipment

Verification of Markov models of ageing power equipment

引用

10th International Conference on Probabilistic Methods Applied to Power Systems, PMAPS 2008

作者： Sugier, Jaroslaw Anders, George Inst. of Computer Engineering Control and Robotics Wroclaw University of Technology Poland Dept. of Microelectronics of the Technical University of Lodz Poland

ISBN: (纸本)9781934325216

Markov models are a well established technique widely used for modeling deterioration processes of the electric power equipment and in reliability analysis. Recently, several papers using Markov and semi-Markov models have been published addressing the issue of the calculation of the rlife, future failure rates and the probability of failure of power equipment. This paper focuses on one such model and addresses an issue of accuracy of Markov model analysis. The paper presents a method of model adjustment and discusses implementation of three numerical algorithms solving the problem of parameter approximation. A practical example confirms validity of the approach and illustrates its efficiency.

关键词： Reliability analysis

来源：评论

学校读者我要写书评

暂无评论

Shared Hybrid Virtual-Experimental Laboratory for training in power electronics techniques

Shared Hybrid Virtual-Experimental Laboratory for training i...

引用

11th IASTED International Conference on Intelligent Systems and control, ISC 2008

作者： Maseda, F. Javier Martija, Itziar Garrido, Aitor Garrido, Izaskun Barambones, Oscar Martija, Irene Dept. Automatic Control and Systems Engineering Basque Country University Plaza de la Casilla3 48012 Bilbao Spain Dept. Mechanical Engineering Basque Country University Plaza de la Casilla3 48012 Bilbao Spain

ISBN: (纸本)9780889867741

This paper analyzes the possibility of using a new philosophy of experimental engineering laboratory for power electronic converters applied to electric machine control. The aim is to develop an environment which, on the one hand, permits the students to design hardware and software blocks that can be incorporated into an electronic power system and, on the other hand, allows the communication and control of this system via the web. The students work in groups, on asynchronous and synchronous software platforms, on the same task and they should look for the best solution for the required design. The drawbacks related to high voltages and currents, waiting for attention from the professor, the high cost of maintenance and updating of an experimental laboratory can be overcome with the use of the Shared Hybrid Virtual-Experimental Laboratory (SHVEL). The validation of the proposed method has been carried out on an experimental system based on the digital signal processor DSP56F807 and on the free software platform FreeMaster from the commercial firm Freescale™.

关键词： Power electronics

来源：评论

学校读者我要写书评

暂无评论

A new method to thermally manage an electronic control unit while reducing radiated emissions

A new method to thermally manage an electronic control unit ...

引用

2008 IEEE International 51st Midwest Symposium on Circuits and Systems, MWSCAS

作者： Sharaa, Imad Aloi, Daniel N. Powertrain Control Electronics Visteon Van Buren Township MI United States Electrical and Computer Engineering Dept. Oakland University Rochester MI United States

ISBN: (纸本)9781424421671

This paper provides a methodology to thermally manage an electronic control unit while reducing its radiated emissions. Measurements of the radiated emission levels for a particular electronic control unit revealed excessive levels. Electronic control units utilize pulse width modulated signals to control an external load. The rise and fall times of the pulse width modulated signal impact both the radiated emissions and the thermal behavior of the electronic control unit. The method proposed in this paper establishes a generalized relationship between the rise and fall times of the electronic control unit's pulse width modulated signals to its associated radiated emission levels and thermal behavior. ©2008 IEEE.

关键词： Servomechanisms

来源：评论

学校读者我要写书评

暂无评论

A Neural Networks based variable structure control scheme for induction motors

A Neural Networks based variable structure control scheme fo...

引用

11th IASTED International Conference on Intelligent Systems and control, ISC 2008

作者： Barambones, Oscar Alkorta, Patxi Garrido, Aitor J. Garrido, Izaskun De La Sen, Manuel Maseda, Francisco J. Martija, Itziar Dept. of Automatic Control and System Engineering University of the Basque Country EUI Nieves cano 12 Vitoria Spain IIDP Facultad de Ciencias University of the Basque Country EUI Nieves cano 12 Vitoria Spain Dept. Mechanical Engineering University of the Basque Country EUI Nieves cano 12 Vitoria Spain

ISBN: (纸本)9780889867741

This paper presents a speed control of an induction motor. The design uses an feedforward Artificial Neural Network (ANN) to implement a rotor speed estimator, and a robust control strategy based on the sliding-mode. The proposed control scheme also make use of the field oriented control theory to simplify the proposed control design. The stability analysis of the presented control scheme is provided using the Lyapunov stability theory. Finally simulated results show that the presented controller with the proposed observer provides high-performance dynamic characteristics and that this scheme is robust with respect to plant parameter variations and external load disturbances.

关键词： Robust control

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：