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5th International Conference on Simulation and Modeling Methodologies, Technologies and Applications, SIMULTECH 2015

作者： Ganishev, Vasilii Fengler, Olga Fengler, Wolfgang Department of Applied Mathematics National Research University Moscow Power Engineering Institute Moscow Russia Faculty of Computer Science and Automation Computer Architecture Group TU Ilmenau Ilmenau Germany

ISBN: (纸本)9789897581205

The increasing complexity of the business processes requires automated methods for trouble-shooting and debugging of the process model in operation. This paper proposes mechanism of fault detection based on the concept of backwards reachability for the coloured workflow nets. The formal verification methods defined for coloured Petri nets such as state space method or place invariants declaration suffer from fast-growing computational complexity. The article offers the set of firing rules for backwards token-play on coloured workflow net. This method helps to detect resource-related failures of the two most common types: "the missing arc" fault (the resource was not initialized) and "wrong expression fault" (there is no proper resource).

关键词： Fault detection

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Error Analysis and Optimality for a Two-Degree of Freedom control System

Error Analysis and Optimality for a Two-Degree of Freedom Co...

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IEEE International Symposium on Intelligent control (ISIC)

作者： L. Keviczky Cs. Banyasz Computer and Automation Research Institute and Control Engineering Research Group Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

Error properties of a generic two-degree of freedom control system is investigated. It is shown that there is a considerable difference between inverse stable and inverse unstable processes. New direct relationships are introduced for identification and optimization errors. For inverse unstable case these errors consist of systematic and random parts. The new results help to construct new algorithms for simultaneous robust identification and control

关键词： Error analysis Optimal control control systems Open loop systems Regulators Transfer functions Error correction Robust control Topology automation

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Evaluation of H2 Optimality for Some Two-Degree of Freedom control Systems

Evaluation of H2 Optimality for Some Two-Degree of Freedom C...

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IEEE Conference on control Technology and Applications (CCTA)

作者： L. Keviczky Cs. Banyasz Computer and Automation Research Institute and Control Engineering Research Group Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

The paper investigates the H 2 optimality of the realizability loss in a decomposition of the sensitivity function for open-loop stable Youla-parametrized generic two-degree of freedom (TDOF) control systems. Conditi... 详细信息

关键词： control systems Error correction Optimal control Automatic control Hydrogen Open loop systems Regulators Transfer functions Mathematical model Degradation

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Quadratic stability of process systems in generalized Lotka-Volterra form 6

Quadratic stability of process systems in generalized Lotka-...

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6th IFAC Symposium on Nonlinear control Systems, NOLCOS 2004

作者： Magyar, A. Szederkényi, G. Hangos, K.M. Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute HAS P.O. Box 63 BudapestH-1518 Hungary Department of Computer Science University of Veszprém Egyetem u. 10 VeszpremH-8200 Hungary

The global and local stability of process systems in generalized Lotka-Volterra form is studied in this paper using entropy-like and quadratic Lyapunov function candidates. The global stability check for LV models is performed by solving an LMI for a diagonal positive semi-definite matrix using singular perturbation technique. It is shown that a quadratic Lyapunov function can also be determined by solving linear matrix inequalities (LMIs). In addition, the quadratic stability neighborhood is convex in the space of the quasi-monomials and can be estimated by computing its comer points using LMIs. Furthermore, it is proved that quadratic stability with a diagonal weighting matrix enables to construct adissipative-Hamiltonian description of the system. The developed methods are illustrated on the model of a continuously stirred tank reactor with a nonlinear reaction system. Copyright © 2004 IFAC.

关键词： Linear matrix inequalities

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H-infinity, L-infinity optimal Youla regulators for two-degree of freedom control systems

H-infinity, L-infinity optimal Youla regulators for two-degr...

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Mediterranean Conference on control and automation (MED)

作者： Cs. Banyasz L. Keviczky Computer and Automation Research Institute and Control Engineering Research Group Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

The sensitivity function can be decomposed into three major parts: design-, realizability- and modeling-loss. The paper investigates the optimality of the second term in infinite norm spaces and proposes a new iterati... 详细信息

关键词： automation Conferences

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Adaptive dynamic surface control for quadrotor-slung load transportation system with uncertainties

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Science China(Technological Sciences) 2023年第10期66卷 2917-2929页

作者： DING Feng HUANG Jian SUN Chong AI Yong XU WenXia YANG ChenGuang School of Computer Science South-Central Minzu UniversityWuhan 430074China Key Laboratory of Ministryof EducationforImage Processing and Intelligent ControlHubei Key Laboratoryof Brain-inspired Intelligent Systems School of Artificial Intelligence and Automation Huazhong University of Science and TechnologyWuhan 430074China School of Computer Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Key Laboratory of Ministry of Education for Autonomous Systems and Networked Control Guangdong Engineering Technology Research Center of Control of Intelligent SystemsCollege of Automation Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Quadrotors play a significant role in our lives and are transforming our *** cable-suspended loads is an unavoidable quadrotor application trend and a hot research topic in the control ***,the load swing and unpredictability pose significant challenges to the quadrotor's *** this paper,an anti-swing controller with an inner-outer control strategy for the quadrotor-slung load transportation system is *** facilitate the controller design,the outer position dynamics are restructured in the form of ***,a virtual controller is created to force the underactuated states to the dynamic surface to ensure the position subsystem's *** improve robustness,an adaptive law is used to eliminate the effects of uncertain cable ***,a dynamic surface controller for the inner attitude subsystem is presented to drive the actual force to the virtual *** is demonstrated that the control strategy can stabilize the quadrotor despite mass and cable length *** results are provided to demonstrate the efficacy and durability of the proposed method.

关键词： quadrotor-slung load transportation system dynamic surface control adaptive law cascade system model uncertainties

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Design of look-ahead control for road vehicles using traffc information 22

Design of look-ahead control for road vehicles using traffc ...

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22nd Mediterranean Conference on control and automation, MED 2014

作者： Gaspar, Peter Nemeth, Balazs Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Hungary Systems and Control Laboratory Institute for Computer Science and Control Hungarian Academy of Sciences Kende u. 13-17 BudapestH-1111 Hungary

ISBN: (纸本)9781479959006

The paper proposes a look-ahead control method in which traffic information is considered. Information about the local traffic is an important factor considering the wider transportation system. The purpose of the method is to reduce control energy and fuel consumption, keep speed limits and travelling time while preceding and following vehicles are taken into consideration. Consequently, the energy-efficient cruise control strategy is able to adapt to the motion of the surrounding vehicles. Moreover, vehicle dynamics, road data and traffic flow in the surroundings are incorporated. The method leads to a multi-objective optimization problem. The design method is illustrated through a complex simulation example based on the CarSim software. © 2014 IEEE.

关键词： Design

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Cross-layer design of wireless networked control systems with energy limitations 10

Cross-layer design of wireless networked control systems wit...

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2009 10th European control Conference, ECC 2009

作者： Chamaken, A. Litz, L. Kraemer, M. Gotzhein, R. Institute of Automatic Control Electrical Engineering and Information Technology University of Kaiserslautern Germany Networked Systems Research Group Computer Science University of Kaiserslautern Germany

ISBN: (纸本)9783952417393

A new approach to the cross-layer design of wireless networked control systems under limited computing and energy resources is presented. The idea is to provide a methodology that jointly takes the aspects of control e.g. control algorithms, Communication e.g. communication protocols, and Computation e.g. energy consumption into consideration. The design objective is the predictability and optimization of the control performance for a given control application. The control performance is a complex function of network parameters e.g. delay, packet loss, network throughput and control system parameters e.g. sampling period, control algorithm. control performance predictability and optimization can only be achieved by imposing requirements on the wireless network design. A cross-layer design methodology is shown to be very useful for this purpose. To illustrate the methodology, an inverted pendulum system with low-energy wireless network is used for the cross-layer design of control algorithms and communication protocols under computing and energy constraints. © 2009 EUCA.

关键词： Energy utilization

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Two-Stage Robust Optimization Under Decision Dependent Uncertainty

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IEEE/CAA Journal of Automatica Sinica 2022年第7期9卷 1295-1306页

作者： Yunfan Zhang Feng Liu Yifan Su Yue Chen Zhaojian Wang João P.S.Catalão State Key Laboratory of Power System and Generation Equipment the Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Department of Mechanical and Automation Engineering the Chinese University of Hong KongHong Kong SARChina Ministry of Education Key Laboratory of System Control and Information Processing the Department of AutomationShanghai Jiao Tong Universityand also with Shanghai Engineering Research Center of Intelligent Control and ManagementShanghai 200240China Faculty of Engineering of the University of Porto and Institute for Systems and Computer Engineering Technology and Science(INESC TEC)Porto 4200-465Portugal IEEE

In the conventional robust optimization(RO)context,the uncertainty is regarded as residing in a predetermined and fixed uncertainty *** many applications,however,uncertainties are affected by decisions,making the current RO framework *** paper investigates a class of two-stage RO problems that involve decision-dependent *** introduce a class of polyhedral uncertainty sets whose right-hand-side vector has a dependency on the here-and-now decisions and seek to derive the exact optimal wait-and-see decisions for the second-stage problem.A novel iterative algorithm based on the Benders dual decomposition is proposed where advanced optimality cuts and feasibility cuts are designed to incorporate the uncertainty-decision *** computational tractability,robust feasibility and optimality,and convergence performance of the proposed algorithm are guaranteed with theoretical *** motivating application examples that feature the decision-dependent uncertainties are ***,the proposed solution methodology is verified by conducting case studies on the pre-disaster highway investment problem.

关键词： Benders decomposition decision-dependent uncertainty endogenous uncertainty robust optimization(RO)

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Skeleton-based Action Recognition Using Two-stream Graph Convolutional Network with Pose Refinement 41

Skeleton-based Action Recognition Using Two-stream Graph Con...

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第41届中国控制会议

作者： Biao Zheng Luefeng Chen Min Wu Witold Pedrycz Kaoru Hirota School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education Department of Electrical and Computer Engineering University of Alberta Tokyo Institute of Technology

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

With the development of science and technology,graph convolutional network has made great progress in improving the accuracy of action ***,there still exists some deficiencies in current ***,the human skeleton point coordinates entering into the network are barely refined,which may cause large ***,the second-order information(the length and direction of bones),which can reflect action characteristics discriminatively,is rarely *** solve the above issues,a two stream graph convolutional network with pose refinement for skeleton based action recognition is ***,we use an adaptive block to to help improve the *** test our method on Kinetics dataset and the experiment show it can get better results than some recent methods,which plays a positive role in future research.

关键词： Graph convolutional network Pose refinement Skeleton based action recognition Adaptive block

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