检索结果-内蒙古大学图书馆

作者： Li, Zairan He, Ting Cao, Luying Wu, Tunhua McCauley, Pamela Balas, Valentina E. Shi, Fuqian Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin China Wenzhou Vocational and Technical College Wenzhou China College of Information and Engineering Wenzhou Medical University Wenzhou325035 China Department of Industrial Engineering and Management Systems University of Central Florida OrlandoFL United States Department of Automation and Applied Informatics Aurel Vlaicu University of Arad Romania

An increasing number of applications require the integration of data from various disciplines, which leads to problems with the fusion of multi-source information. In this paper, a special information structure formalized in terms of three indices (the central presentation, population or scale, and density function) is proposed. Single and mixed Gaussian models are used for single source information and their fusion results, and a parameter estimation method is also introduced. Furthermore, fuzzy similarity computing is developed for solving the fuzzy implications under a Mamdani model and a Gaussian-shaped density function. Finally, an improved rule-based Gaussian-shaped fuzzy control inference system is proposed in combination with a nonlinear conjugate gradient and a Takagi-Sugeno (T-S) model, which demonstrated the effectiveness of the proposed method as compared to other fuzzy inference systems. © 2015 - IOS Press and the authors. All rights reserved.

关键词： Fuzzy control

来源：评论

学校读者我要写书评

暂无评论

Study on small multiplicative fault detection using Canonical Correlation Analysis with the local approach

引用

IFAC-PapersOnLine 2015年第21期48卷 1414-1419页

作者： Chen, Zhiwen Zhang, Kai Ding, Steven X. Yang, Xu He, Zhangming Hu, Zhikun Institute for Automatic Control and Complex Systems University of Duisburg-Essen Bismarckstrasse 81 BB Duisburg 47057 Germany College of Automation and Electrical Engineering University of Science and Technology Beijing Beijing 100083 China College of Science National University of Defense Technology Changsha 410073 China College of Physics and Electronics Central South University Changsha 410073 China

Canonical correlation analysis(CCA) could be utilized for analyzing a linear static process when the input-output relationship is explicitly existing. Based on the canonical variates obtained by the CCA method, a novel fault detection approach can be designed by resembling the principal component analysis (PCA) and the partial least squares (PLS) approaches. However, in this paper, the traditional CCA approach will be shown insensitive to one kind of fault, i.e., multiplicative fault (change). Based on this motivation, a modified statistic based on the local approach is introduced to help CCA approach further improve its acceptance for detecting multiplicative changes in the static processes. The new method will be verified through its application to a continuous stirred tank heater (CSTH). © 2015

关键词： Fault detection

来源：评论

学校读者我要写书评

暂无评论

Nearly Optimal Tracking control for Continuous Time Nonlinear systems Using a Policy Iteration Based HJB Approach

Nearly Optimal Tracking Control for Continuous Time Nonlinea...

引用

第三十四届中国控制会议

作者： Ruizhuo Song Qinglai Wei Wendong Xiao Zanzan Du School of Automation and Electrical Engineering University of Science and Technology Beijing The State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

ISBN: (纸本)9781467374439

A policy iteration method is proposed to solve the optimal tracking control of continuous-time systems based on HJB equation. The performance index function is composed by the state tracking error and the tracking control error. The iterative performance index function and the iterative control are obtained by the presented policy iteration. It is proven that the iterative control makes the system asymptotic stability, and the iterative performance index function is convergent. Simulation study demonstrates that the effectiveness of the proposed optimal tracking control method.

关键词： Adaptive dynamic programming,Approximate dynamic programming,Optimal tracking control,Policy Iteration

来源：评论

学校读者我要写书评

暂无评论

Physical Modelling of Energy Consumption of Industrial Articulated Robots

Physical Modelling of Energy Consumption of Industrial Artic...

引用

International Conference on control, automation and systems

作者： Akeel Othman Kvetoslav Belda Pavel Burget Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Department of Adaptive Systems Institute of Information Theory and Automation of the CAS

ISBN: (纸本)9781479999767

The paper deals with a modelling of the energy consumption of industrial articulated robots. The proposed modelling way is based on graphically-oriented computer-aided concept that exploits CAD software Solidworks and simulation environment MATLAB/Simulink with SimMechanics and SimPowersystems libraries. These software tools are used for the composition of a dynamical simulation model that represents both mechanical robot structure and robot drives during robot motions. The paper addresses mathematical analysis and interpretation of the considered simulation model. Here, equations of the motion for the mechanical robot structure and appropriate dynamical equations of the robot drives are introduced. Using these equations, the energy consumption equation is defined. The proposed way is demonstrated by simulation experiments for several different velocities of the robot motion along a selected trajectory. For the experiments, industrial articulated robot KUKA KR 5 arc driven by PMSM drives is considered.

关键词： Industrial articulated robots Energy consumption Mathematical analysis Computer-aided modelling

来源：评论

学校读者我要写书评

暂无评论

A new approach of optimal control for a class of continuous-time chaotic systems by an online ADP algorithm

引用

Chinese Physics B 2014年第5期23卷 138-144页

作者：宋睿卓肖文栋魏庆来 School of Automation and Electrical Engineering University of Science and Technology Beijing The State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

We develop an online adaptive dynamic programming （ADP） based optimal control scheme for continuous-time chaotic systems. The idea is to use the ADP algorithm to obtain the optimal control input that makes the performance index function reach an optimum. The expression of the performance index function for the chaotic system is first presented. The online ADP algorithm is presented to achieve optimal control. In the ADP structure, neural networks are used to construct a critic network and an action network, which can obtain an approximate performance index function and the control input, respectively. It is proven that the critic parameter error dynamics and the closed-loop chaotic systems are uniformly ultimately bounded exponentially. Our simulation results illustrate the performance of the established optimal control method.

关键词： adaptive dynamic programming adaptive critic designs optimal control continuous-time chaoticsystem

来源：评论

学校读者我要写书评

暂无评论

Active fault diagnosis in sampled-data systems 9

Active fault diagnosis in sampled-data systems

引用

9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, SAFEPROCESS 2015

作者： Niemann, Henrik Poulsen, Niels Kjølstad Department of Electrical Engineering Automation and Control Technical University of Denmark Building 326 Kgs. LyngbyDK-2800 Denmark Dept. of Applied Mathematics and Computer Science Section for Dynamical Systems Technical University of Denmark Kgs. LyngbyDK-2800 Denmark

The focus in this paper is on active fault diagnosis (AFD) in closed-loop sampleddata systems. Applying the same AFD architecture as for continuous-time systems does not directly result in the same set of closed-loop matrix transfer functions. For continuous-time systems, the LFT (linear fractional transformation) structure in the connection between the parametric faults and the matrix transfer function (also known as the fault signature matrix) applied for AFD is not directly preserved for sampled-data system. As a consequence of this, the AFD methods cannot directly be applied for sampled-data systems. Two methods are considered in this paper to handle the fault signature matrix for sampled-data systems such that standard AFD methods can be applied. The first method is based on a discretization of the system such that the LFT structure is preserved resulting in the same LFT structure in the fault signature matrix as obtained for continuous-time systems. The other method is an approximation method, where the same structure is obtained for small parametric faults. © 2015, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Continuous time systems

来源：评论

学校读者我要写书评

暂无评论

On Finite-Horizon Optimal control of First-Order Plus Time Delay systems

On Finite-Horizon Optimal Control of First-Order Plus Time D...

引用

第27届中国控制与决策会议

作者： Dawei Shi Tongwen Chen State Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of Technology Department of Electrical and Computer Engineering University of Alberta

In this work,a finite-horizon optimal control problem for first-order plus time delay(FOPTD) processes is *** show that if the control horizon is greater than three and the prediction horizon is great than the control horizon plus the time delay in discrete time,the optimal controller is not affected by either of the two ***,under these conditions,the controller parameters are explicitly calculated,the closed-loop system is shown to be stable,and the controller is *** problem considered is related to the results on linear quadratic regulation of linear systems with time delays;however,the detailed parameterization of the state-space model introduced by the FOPTD process provides an additional opportunity to investigate the exact controller structure and properties(e.g.,the locations of the closed-loop poles),which are also the major difficulties encountered and overcome in this *** problem is motivated from phenomena experienced in designing industrial model predictive control(MPC) tuning algorithms,and extensive numerical examples indicate that the proposed results speed up the MPC autotuning algorithms by 70%.

关键词： Optimal control First-order plus time delay process Performance visualization MPC tuning

来源：评论

学校读者我要写书评

暂无评论

Consensus of Heterogeneous Multi-agent systems With Switching Topologies Using Input-output Feedback Linearization

Consensus of Heterogeneous Multi-agent Systems With Switchin...

引用

第三十四届中国控制会议

作者： Qichao Zhang Dongbin Zhao Qinglai Wei Chengdong Li State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences School of Information and Electrical Engineering Shandong Jianzhu University

ISBN: (纸本)9781467374439

In this paper, the leader-following consensus problem of multi-agent systems with nonlinear heterogeneous dynamics and switching topologies is considered. All agent outputs are required to track a leader output which is assumed as a desired value. By input-output feedback linearization, the nonlinear heterogeneous system is decomposed into equivalent linear systems and internal dynamics. Then a distributed auxiliary controller for every agent using local information is designed and a sufficient consensus condition is given under switching topologies with every possible topology containing a directed spanning ***, it is proved that the consensus can be achieved with the same condition for multi-agent systems under switching topologies frequently containing a directed spanning tree. Simulation results verify the effectiveness of the control protocol.

关键词： Multi-agent systems,Switching Topologies,Nonlinear Heterogeneous systems,Communication Failures,Inputoutput Feedback

来源：评论

学校读者我要写书评

暂无评论

Online critic-identifier-actor algorithm for optimal control of nonlinear systems

Online critic-identifier-actor algorithm for optimal control...

引用

International Conference on Intelligent control and Information Processing (ICICIP)

作者： Hanquan Lin Qinglai Wei Derong Liu State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China

In this paper, a novel critic-identifier-actor optimal control scheme is designed for discrete-time affine nonlinear systems with uncertainties. A neural identifier is established to learn the unknown control coefficient matrix for affine nonlinear system working together with an actor-critic-based scheme to solve the optimal control in online and forward-in-time manner without value or policy iterations. A critic network learns approximate value function at each step. Another actor network attempts to improve the current policy based on the approximate value function. The weights of all neural networks (NNs) are updated at each sampling instant. Lyapunov theory is utilized to prove the stability of the closed-loop system. A simulation example is provided to illustrate the effectiveness of the developed method.

关键词： Optimal control Artificial neural networks Nonlinear systems Discrete-time systems Mathematical model Estimation error

来源：评论

学校读者我要写书评

暂无评论

Guest Editorial for Special Issue on Autonomous control of Unmanned Aerial Vehicles

引用

IEEE/CAA Journal of Automatica Sinica 2015年第1期2卷 1-1页

作者： Derong Liu Changyin Sun Bin Xian the IEEE Computational Intelligence Society the IEEE Transactions on Neural Networks and Learning Systems 2016 World Congress on Intelligent Control and Automation Southeast University of China University of Science and Technology Beijing School of Electrical Engineering and Automation at Tianjin University

IN recent years,unmanned aerial vehicles(UAVs)have been widely employed in different applications,both military and ***,a fast growing civil UAV market is predicted over the next ***,most currently developed UAVs depend on simple control *** require exact modeling of the UAVs dynamics and are vulnerable to external ***,there is great

关键词： for in et is UAV Guest Editorial for Special Issue on Autonomous control of Unmanned Aerial Vehicles on of

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：