检索结果-内蒙古大学图书馆

IEEE International symposium on Industrial Electronics (ISIE)

作者： H. Rasmussen P. Vadstrup H. Borsting

Using adaptive Lyapunov design a new approach for the design of an observer for speed sensorless control is developed. The resulting scheme leads to a nonlinear full order observer for the motor states and for the motor and inverter parameters including the rotor speed. Assuming motor parameters are known, the design achieves stability with a guaranteed region of attraction. Experiments demonstrate high dynamic performance even at zero rotor speed based only on the slip frequency caused by the load torque.

关键词： Induction motors Rotors observers Inverters Brushless motors Kalman filters Torque

来源：评论

学校读者我要写书评

暂无评论

Sensorless speed and direct torque control of interior permanent magnet synchronous machine based on extended Kalman filter

Sensorless speed and direct torque control of interior perma...

引用

IEEE International symposium on Industrial Electronics (ISIE)

作者： V. Comnac M.N. Cirstea F. Moldoveanu D.N. Ilea R.M. Cernat

The application of vector control techniques in AC drives demands accurate position and speed feedback information for the current control and servo-control loops. The paper describes a digital sensorless speed control system for interior permanent magnet synchronous machines (IPMSM). A Kalman filter is used to estimate the mechanical state of the motor. The observer was developed using a nonlinear model of the synchronous motor based on a d-q rotating reference frame attached to the rotor. The stator flux and electromagnetic torque are controlled by nonlinear hysteresis controllers; their outputs are used to generate the control signals for the inverter, based on a switching table. The angular speed controller is linear, of integral + proportional integral (I + PI) type. The paper studies the interaction between the observer and the closed loop control system. The simulation shows that the dynamic behaviour of the Kalman filter based control system is good even if the electric and mechanical parameters of the machine are different from the rated values used for the design of the controllers and the Kalman filter and also if there is an incorrect initialization of the estimated position.

关键词： control systems Kalman filters Torque Rotors Angular velocity Switches observers

来源：评论

学校读者我要写书评

暂无评论

Synchronization in arrays of coupled nonlinear systems: Passivity circle criterion and observer design

Synchronization in arrays of coupled nonlinear systems: Pass...

引用

2001 IEEE International symposium on Circuits and Systems, ISCAS 2001

作者： Wu, Chai Wah IBM Research Division Thomas J. Watson Research Center P. 0. Box 218 Yorktown Heights NY 10598 United States

ISBN: (纸本)0780366859

It has been shown that synchronization between two nonlinear systems can be studied as a control theory problem. We show that this relationship can be extended to synchronization in coupled arrays of nonlinear systems. In particular, we extend several stability conditions to synchronization criteria in arbitrarily coupled arrays: the passivity criterion, the circle criterion and a result on observer design of Lipschitz nonlinear systems. © 2001 IEEE.

关键词： Synchronization

来源：评论

学校读者我要写书评

暂无评论

Performance enhancement of a class of nonlinear nonminimum phase systems by adaptive observer

Performance enhancement of a class of nonlinear nonminimum p...

引用

IEEE International symposium on Industrial Electronics (ISIE)

作者： Kroumov, V Shibayama, K Sawae, R Sakata, T Okayama Univ Sci Fac Engn Dept Elect Engn Okayama 7000005 Japan

ISBN: (纸本)0780370902

An adaptive observer scheme for estimation of unknown disturbances in a nonlinear non-minimum phase time-invariant, single-input single-output control system is proposed. It is assumed that the disturbances are generated by a system with unknown parameters, which are identified by the adaptive observer. The design is based on coprime factorization of the plant model over the ring of stable rational functions. Comparison between adaptive observers for strictly positive real plant and the proposed scheme is shown, as well. The stability of the overall system is proved. The effectiveness of the proposed scheme is verified through simulation examples.

关键词： Discrete time control systems

来源：评论

学校读者我要写书评

暂无评论

The design of sliding mode controller with perturbation observer for a 6-DOF parallel manipulator

The design of sliding mode controller with perturbation obse...

引用

IEEE International symposium on Industrial Electronics (ISIE)

作者： Park, MK Lee, MC Go, SJ Pusan Natl Univ Grad Sch Mech & Intelligent Syst Engn Pusan 609735 South Korea

ISBN: (纸本)0780370902

This study proposes the sliding mode controller with perturbation observer for a 6-DOF parallel manipulator-in the presence of nonlinear and uncertainty terms. The controller is based on Lyapunov approach and the perturbation observer is based on the fuzzy adaptive network This observer utilizes the control input for compensating unmodeled dynamics terms and disturbance. And, the weighting parameters of the fuzzy adaptive network are updated on-line by adaptive law in order to force the estimation errors to converge to zero. Therefore, the combination of sliding mode control and fuzzy adaptive network gives rise to the robust and intelligent routine. For evaluating control performance of the proposed approach, tracking control simulation is carried out for a 6-DOF parallel manipulator.

关键词： control system synthesis

来源：评论

学校读者我要写书评

暂无评论

Adaptive control for a class of nonlinear discrete-time systems using neural networks

Adaptive control for a class of nonlinear discrete-time syst...

引用

IEEE International symposium on Intelligent control (ISIC 01)

作者： Ge, SS Li, GY Lee, TH Natl Univ Singapore Dept Elect Engn Singapore 119260 Singapore

ISBN: (纸本)0780367227

In this paper, the adaptive control problem is studied for a class of discrete-time unknown nonlinear systems with general relative degree in the presence of bounded disturbances. To derive the feedback control, a causal state-space model of the plant is obtained. By using an NN observer to estimate the unavailable but predictable states of the system, a Lyapunov-based adaptive state feedback NN controller is proposed. The state feedback control avoids the possible singularity problem in adaptive nonlinear control. The closed-loop system is proven to be semi-globally uniformly ultimately bounded (SGUUB). An arbitrarily small tracking error can be achieved if the size of neural networks is chosen large enough, and the control performance of the closed-loop system is guaranteed by suitably choosing the design parameters.

关键词： Adaptive control systems

来源：评论

学校读者我要写书评

暂无评论

Passivity-based control for phase-locked loop induction motor drive

Passivity-based control for phase-locked loop induction moto...

引用

2001 IEEE International symposium on Industrial Electronics Proceedings (ISIE 2001)

作者： Xue, F. Yang, J. Wu, J. Chan, C.C. Gu, S.

This paper designs a nonlinear feedback controller for Phase-Locked Loop (PLL) induction motor drive using passivity-based control (PBC) principle. First, the dynamics of induction motor is described as Euler-Lagrange form. The PLL technique is introduced for the speed control to obtain precise steady speed. The reference (steady-state) behavior for all state variables are defined according to the dynamics of PLL and field orientation strategy. The best advantage of the feedback controller by passivity-based control principle is the global stability since the energy balance equation of induction motor is used. As the dynamic of PLL is taken into consideration in the design procedure, this stability indicates that lock-in of PLL is ensured in spite of the nonlinear characteristics of PLL. Since the same idea as field orientation strategy is used, the same performance as field orientation is obtained. However, the rotor flux observer is not needed any more. On the basis of the nonlinear feedback controller, a nonlinear state observer and adaptive scheme for rotor resistance and load torque are also designed. Some simulation results illustrate the performance of this PBC system.

关键词： Induction motors

来源：评论

学校读者我要写书评

暂无评论

controller design for improving lateral vehicle dynamic stability

引用

JSAE REVIEW 2001年第4期22卷 481-486页

作者： Park, KH Heo, SJ Baek, IH Kookmin Univ Grad Sch Automot Engn Seoul 136702 South Korea

A vehicle dynamics control system has been developed in this study for improving vehicle dynamic stability under critical lateral motions. The system consists of a feedforward controller, a state feedback controller, and an estimator for the body sideslip angle. The linear quadratic regulator theory has been exploited for the state feedback gain, and for estimation of the body sideslip angle, a nonlinear observer has been developed. Simulations have been conducted to evaluate the performance of the closed loop system under various driving conditions, and the results will be presented in this paper. (C) 2001 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V. All rights reserved.

关键词： Driving Conditions Vehicle dynamics SIDESLIP FEEDFORWARD Angle state feedback controller feedback gain State feedback Closed loop systems linear quadratic regulators Dynamic stability

来源：评论

学校读者我要写书评

暂无评论

Synchronization in arrays of coupled nonlinear systems: passivity circle criterion and observer design

Synchronization in arrays of coupled nonlinear systems: pass...

引用

IEEE International symposium on Circuits and Systems (ISCAS)

作者： Chai Wah Wu IBM Research Division IBM Thomas J. Watson Research Center Yorktown Heights NY USA

ISBN: (纸本)0780366859

关键词： Couplings nonlinear systems control theory Asymptotic stability Symmetric matrices Lyapunov method Eigenvalues and eigenfunctions Linear systems Stability criteria Chaos

来源：评论

学校读者我要写书评

暂无评论

Performance enhancement of a class of nonlinear nonminimum phase systems by adaptive observer

Performance enhancement of a class of nonlinear nonminimum p...

引用

IEEE International symposium on Industrial Electronics (ISIE)

作者： V. Kroumov K. Shibayama R. Sawae T. Sakata Dept. of Electronic Engineering Okayama Univ. of Science Okayama Japan Graduate School Okayama University of Science Japan Dept. of Applied Mathematics Okayama University of Science Japan Dept. of Industrial Design Kyushu Institute of Design

ISBN: (纸本)0780370902

An adaptive observer scheme for the estimation of unknown disturbances in a nonlinear nonminimum phase time-invariant, single-input single-output control system is proposed. It is assumed that the disturbances are generated by a system with unknown parameters, which are identified by the adaptive observer. The design is based on coprime factorization of the plant model over the ring of stable rational functions. Comparison between adaptive observers for strictly positive real plant and the proposed scheme is shown, as well. The stability of the overall system is proved. The effectiveness of the proposed scheme is verified through simulation examples.

关键词： Adaptive systems Transfer functions Adaptive control design engineering control systems Programmable control Industrial electronics Mathematics Electrical equipment industry Electronics industry

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：