检索结果-内蒙古大学图书馆

American control Conference

作者： Xiang Liu Bin Xian Yao Zhang Xu Zhang Institute of Robotics and Autonomous System the Tianjin Key Laboratory of Process Measurement and Control Schoool of Electrical Engineering and Automation Tianjin University Tianjin 300072 China

ISBN: (纸本)9781479932757

In this paper a nonlinear attitude tracking control scheme is developed for a small-scaled unmanned helicopter under input constraints. Via the analysis of the properties associated with the helicopter's rotor dynamics, the elevator servo input, the aileron servo input, and the rudder servo input are chosen to be the control inputs to be designed. Their constraints in amplitude under hovering flight is taken into account by using the robust bounded terms in the controller design. The asymptotic convergence of the tracking error is guaranteed with the Lyapunov-based stability analysis.

关键词： Helicopters Rotors Attitude control Vectors Servomotors Stability analysis Equations

来源：评论

学校读者我要写书评

暂无评论

A Continuous Robust control Design for a Class of Non-Affine Nonlinear Dynamics with Non-varnishing Disturbance

A Continuous Robust Control Design for a Class of Non-Affine...

引用

American control Conference

作者： Yao Zhang Bin Xian Bo Zhao Xiang Liu Institute of Robotics and Autonomous System the Tianjin Key Laboratory of Process Measurement and Control Schoool of Electrical Engineering and Automation Tianjin University Tianjin 300072 China

ISBN: (纸本)9781479932757

In this paper, the problem for the control of a class of single-input-single-output (SISO) non-affine nonlinear system with non-varnishing disturbance is investigated. A continuous nonlinear feedback structure is utilized to tackle with the uncertain dynamics in the system. By taking the time derivative of the origin system, a transformed affine-like form is derived. The first order derivative of control input appears linearly in the augmented dynamics with unknown control direction. Nussbaum-type function is incorporated to estimate the unknown control direction. A revised Lyapunov based analysis is carried out to prove that under some moderate assumptions, the Semi-global Uniformly Ultimately Bounded (SGUUB) tracking result is achieved and all the closed loop signals are bounded. Numerical simulation results are presented to illustrate the performance of the proposed control law.

关键词： Radio frequency Nonlinear dynamical systems Stability analysis Trajectory Tracking loops control design Equations

来源：评论

学校读者我要写书评

暂无评论

A new pricing scheme for controlling energy storage devices in smart grid

A new pricing scheme for controlling energy storage devices ...

引用

2014 American control Conference, ACC 2014

作者： Zhu, Jingwei Chen, Michael Z. Q. Zuo, Zhiqiang Du, Baozhu Department of Mechanical Science and Engineering University of Illinois at Urbana-Champaign Champaign IL 61820 United States Department of Mechanical Engineering University of Hong Kong Hong Kong Hong Kong Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China School of Automation Nanjing University of Science and Technology Nanjing China HKU Shenzhen Institute of Research and Innovation China

ISBN: (纸本)9781479932726

Improvement of the overall efficiency of energy infrastructure is one of the main anticipated benefits of the deployment of smart grid technology. Advancement in energy storage technology and two-way communication in the electric network are indispensable components to achieve such a vision, while efficient pricing schemes and appropriate storage management are also essential. In this paper, we propose a novel pricing scheme which permits one to indirectly control the energy storage devices in the grid to achieve a more desirable aggregate demand profile that meets a particular target of the grid operator such as energy generation cost minimization and carbon emission reduction. Such a pricing scheme can potentially be applied to control the behavior of energy storage devices installed for integration of intermittent renewable energy sources that have permission to grid connection and will have broader applications as an increasing number of novel and low-cost energy storage technologies emerge. © 2014 American automatic control Council.

关键词： Smart power grids

来源：评论

学校读者我要写书评

暂无评论

Nonlinear asymptotic attitude tracking control of an underactuated 3-degree-of-freedom helicopter using neural network feedforward term

引用

控制理论与应用（英文版） 2013年第3期11卷 428-435页

作者： Xiang LIU Bin XIAN Jianchuan GUO Bo ZHAO Chen DIAO Institute of Robotics and Autonomous System Tianjin Key Laboratory of Process Measurement and Control and School of Electrical Engineering and Automation Tianjin University

This paper proposes a new asymptotic attitude tracking controller for an underactuated 3-degree-of-freedom （DOF） laboratory helicopter system by using a nonlinear robust feedback and a neural network （NN） feedforward term. The nonlinear robust control law is developed through a modified inner-outer loop approach. The application of the NN-based feedforward is to compensate for the system uncertainties. The proposed control design strategy requires very limited knowledge of the system dynamic model, and achieves good robustness with respect to system parametric uncertainties. A Lyapunov-based stability analysis shows that the proposed algorithms can ensure asymptotic tracking of the helicopter＇s elevation and travel motion, while keeping the stability of the closed-loop system. Real-time experiment results demonstrate that the controller has achieved good tracking performance.

关键词： 3-DOF helicopter Nonlinear Robust control Asymptotic tracking

来源：评论

学校读者我要写书评

暂无评论

Optimal Tracking control for a Class of Continuous Time Complex-valued Systems Based on Adaptive Dynamic Programming Algorithm

Optimal Tracking Control for a Class of Continuous Time Comp...

引用

第三十三届中国控制会议

作者： Ruizhuo Song Frank L.Lewis Qinglai Wei Wendong Xiao School of Automation and Electrical Engineering University of Science and Technology Beijing University of Texas at Arlington Research Institute University of Texas at Arlington State Key Laboratory of Synthetical Process Automation Northeastern University The State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

ISBN: (纸本)9781479947249

Based on the adaptive dynamic programming(ADP) algorithm,a new optimal tracking control method is proposed for a class of complex-valued nonlinear systems in this *** tracking error is rst de ned,and then the performance index function which is about the tracking error is *** transformation,the complex-valued tracking error system is mapped into *** optimal control method for the tracking error system is *** two neural networks are used to be as the critic network and action network,*** is proven that the closed-loop system is uniformly ultimately bounded based on Lyapunov ***,the simulation study is given to show the effectiveness of the proposed optimal tracking control method for complex-valued nonlinear system.

关键词： Adaptive dynamic programming,optimal control,neural network,complex-valued

来源：评论

学校读者我要写书评

暂无评论

Implementation of PFC (Predictive Functional control) in a petrochemical plant

引用

IFAC Proceedings Volumes 2014年第3期47卷 5333-5338页

作者： R. Haber U. Schmitz K. Zabet Institute of Process Engineering and Plant Design Laboratory of Process Automation Cologne University of Applied Science D-50679 Köln Betzdorfer Str. 2 Germany fax: +49-221-8275-2836 and Department for APC and process control technology Rheinland Refinery Shell Deutschland Oil GmbH Ludwigshafener Strasse 1 D-50389 Wesseling

PFC (Predictive Functional control) is a simple but very effective SISO (Single-Input Single- Output) predictive controller which does not require any matrix inversion or numerical minimization of a cost function, therefore it is easy to realize in a PLCs (Programmable Logical controllers) or a DCS (Decentralized control Systems). The manipulated variable and/or its increment, as well other variables can be constrained easier than when using PI(D) (Proportional, Integrating, and Derivating) controller. Furthermore PFC handles the dead time process better than with PI(D) controller. Three industrial applications of PFC for two distillation columns and a reactor in a petro-chemical plant were implemented and the experiences are presented here.

关键词： predictive functional control distillation column programmable logical controller

来源：评论

学校读者我要写书评

暂无评论

A new method of Variable Structure control system based on lines cluster approaching theory

A new method of Variable Structure Control system based on l...

引用

2014中国制导、导航与控制学术会议

作者： Yueyang Hua Yunjie Wu Xiaomeng Dong Xiaodong Liu School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Automation Science and Electrical EngineeringBeihang UniversityBeijing100191China Qian Xuesen Laboratory of Space TechnologyCASTBeijing100094China Beijing Aerospace Automatic Control Instituteand National Key Laboratory of Science and Technology on Aerospace Intelligence ControlBeijing 100854China

ISBN: (纸本)9781479946983

Based on lines cluster approaching theory and inspired by the traditional exponent reaching law method,a new control law is designed to further improve the parameter simplicity and structure optimization of the control ***,the design guidelines and mathematical proofs are also given respectively according to Lyapunov stability *** to the new kind of control laws,a intelligent fuzzy parameter optimization is put forward to improve the rapidity and *** traditional servo control system as example,three control schemes are *** simulation results present that the lines cluster approaching mode control (LCAMC) method makes the servo system remain to track command quickly and accurately in spite of the influence of sustained equivalent *** with the traditional variable structure control system,the LCAMC method has a smaller error and a better tracking *** controller makes the LCAMC method to have better rapidity and robustness.

关键词： Lyapunov methods fuzzy control optimisation variable structure systems LCAMC method Lyapunov stability theory fuzzy controller intelligent fuzzy parameter optimization lines cluster approaching mode control method parameter simplicity structure optimization variable structure control system Convergence Design methodology Robustness Servosystems Trajectory Vectors Servo systems Structural optimization Variable structure systems Lyapunov methods Fuzzy control trajectory lines lines Converge Variable structure control Robustness stability theory servo control system PARTICLE RAPIDITY control law

来源：评论

学校读者我要写书评

暂无评论

Mathematical modeling facing to three-dimensional integrated guidance and control for STT aircraft

Mathematical modeling facing to three-dimensional integrated...

引用

International Conference on Mechatronics and control (ICMC)

作者： Xiaodong Liu Wanwei Huang Shaofeng Xiong Yu Zhang National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing China Beijing Aerospace Automatic Control Institute Beijing China School of Automation Science and Electrical Engineering Beihang University Beijing China Editorial Office of Chinese Journal of Aeronautics Beijing China

ISBN: (纸本)9781479925391

The integrated guidance and control (IGC) technology of aircraft has been developing for more than 30 years, and it mainly focused on the research in single plane. Due to the exigent requirement on the three-dimensional IGC technology in current researches, the mathematical modeling in three-dimensional space is considered and analyzed in order to solve the primary problem during the design period of three-dimensional IGC. The three-dimensional guidance model of line-of-sight (LOS) and dynamics model of aircraft are respectively established, and then they are cooperatively united as an original state-space model. Based on some feasible simplifications, the original model is further transformed into a simplified state-space model with strict feedback form, which is propitious for the design of IGC scheme. The proposed state-space model can be directly applied to explore the advanced three-dimensional IGC approaches for unpowered sliding-to-turn (STT) aircraft with fixed target. Moreover, it also possesses higher application value.

关键词： Mathematical model Aircraft Atmospheric modeling Solid modeling Aerospace control State-space methods Uncertainty

来源：评论

学校读者我要写书评

暂无评论

Robust Coupling-Observer-Based Sliding Mode control for Flexible Air-breathing Hypersonic Vehicles

Robust Coupling-Observer-Based Sliding Mode Control for Flex...

引用

2014中国制导、导航与控制学术会议

作者： Na Wang Wen-Shuo Li Lei Guo Hui-Lian Han School of Instrumentation Science and Opto-Electronics Engineering Beihang UniversityBeijing100191China School of Automation Science and Electrical EngineeringBeihang UniversityBeijing100191China National Key Laboratory on Aircraft Control TechnologyBeihang UniversityBeijing100191China National key laboratory of aerospace intelligent control technologyBeijing aerospace automatic control instituteBeijing100854China

ISBN: (纸本)9781479946983

This paper investigates the problem of nonlinear sliding mode control for flexible air-breathing hypersonic vehicles (FAHVs) with *** modeling the flexible effects produced by the rigid-flexible coupling terms as a kind of disturbance and including in the new control-design model with multiple disturbances,a robust coupling observer is proposed to estimate these flexible effects.A novel composite hierarchical controller is also provided,which combines a robust coupling-observer-based compensator and a dynamic-inversion-based sliding mode *** addition,the uniformly ultimately boundedness of composite closed-loop system is confirmed by using Lyapunov *** results on a full nonlinear model of FAHVs demonstrate that the proposed composite controller is more effective than traditional dynamic-inversion-based sliding mode controller.

关键词： Lyapunov methods aircraft control control system synthesis flexible structures hierarchical systems large-scale systems nonlinear control systems observers robust control uncertain systems variable structure systems FAHV nonlinear model Lyapunov theory composite closed-loop system composite controller composite hierarchical controller control-design model dynamic-inversion-based sliding mode controller flexible air-breathing hypersonic vehicles flexible effect estimation flexible effects modeling multiple disturbances nonlinear sliding mode control rigid-flexible coupling terms robust coupling-observer-based compensator robust coupling-observer-based sliding mode control uncertainties uniformly ultimately boundedness Aerospace control Atmospheric modeling Couplings Observers Robustness Uncertainty Vehicle dynamics

来源：评论

学校读者我要写书评

暂无评论

Identification of Linear Parameter Varying Systems with Missing Output Data Using Generalized Expectation-Maximization Algorithm

引用

IFAC Proceedings Volumes 2014年第3期47卷 9364-9369页

作者： X. Yang W. Xiong B. Huang H. Gao Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang 150080 China Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Jiangnan University Wuxi Jiangsu 214122 China Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta T6G 2G6 Canada Research Institute of Mechatronics and Automation Bohai University Jinzhou 121013 China and Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang 150080 China

This paper is concerned with the identification problems of linear parameter varying (LPV) systems with randomly missing output data. Since one local linearized model cannot capture the global dynamics of the nonlinear industrial process, the multiple-model LPV model in which the global model is constructed by smoothly weighted combination of multiple local models is considered here. The problem of missing output variables data is commonly encountered in practice. In order to handle the multiple-model identification problems of LPV systems with incomplete data, the local model is taken to have a finite impulse response (FIR) model structure and the generalized expectation-maximization (EM) algorithm is adopted to estimate the unknown parameters of the global LPV model. To avoid the problems of ill-conditioned matrices and high sensitivity of parameters to noise, the prior information on the coefficients of each local FIR model is employed to construct the prior probability of unknown parameters. Then the maximum a posteriori (MAP) estimates of the global model parameters are derived via the generalized EM algorithm. The numerical example is presented to demonstrate the effectiveness of the proposed method.

关键词： Linear parameter varying systems Generalized EM algorithm Missing output data Maximum a posteriori estimates

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：