Filters








679,307 Hits in 5.5 sec

Real-Time Simulation and Hardware-in-the-Loop Approaches for Integrating Renewable Energy Sources into Smart Grids: Challenges & Actions [article]

Van Hoa Nguyen, Yvon Besanger, Quoc Tuan Tran, Tung Lam Nguyen, Cederic Boudinet, Ron Brandl, Frank Marten, Achilleas Markou, Panos Kotsampopoulos, Arjen A. van der Meer, Effren Guillo-Sansano, Georg Lauss, Thomas I. Strasser, Kai Heussen
2017 arXiv   pre-print
This paper aims to provide an overview of the present status-quo of real-time and HIL approaches used for smart grids and their readiness for cyber-physical experiments.  ...  Real-time simulation and Hardware-in-the-Loop (HIL) techniques emerge as indispensable tools for validating the behaviour of renewable sources as well as their impact/interaction to with the cyber-physical  ...  In this approach, the non-real-time simulation model is converted to FMU and integrated directly to the real-time simulators model and is forced to run at real-time simulators time steps.  ... 
arXiv:1710.02306v1 fatcat:aheb3bteljbsdips6dbv62axw4

Links between Dynamic Physical Systems and Operator Theory Issues Concerning Energy Balances and Stability

M. De la Sen
2004 American Journal of Applied Sciences  
Those concepts together with very close related ones are first examined from a physical point of view.  ...  Then, they are related to hyper-stability and properties of transfer functions while the hyper-stability theorem is revisited and interpreted.  ...  , as usual, <u, y> t is an abbreviation for a time-integral product (i.e.  ... 
doi:10.3844/ajassp.2004.248.254 fatcat:5duwpfc2crf4xh5z3zg3iwy4x4

Versatile Intelligent Portable Robot Control Platform Based on Cyber Physical Systems Principles

Victor VLĂDĂREANU, Ioan DUMITRACHE, Luige VLĂDĂREANU, Ioan Ștefan SACALĂ, Gabriela TONŢ, Mihnea Alexandru MOISESCU
2015 Studies in Informatics and Control  
The results lead to higher performance, stability, reliability, robustness and efficiency in approaching the predictable robot motion and in the development of new technological capabilities of the physical  ...  This paper studies humanoid and walking robot hybrid dynamic control through optimization of the intelligent control methods in order to increase the robot stability on uneven ground, at variable robot  ...  The PC-OAH (PC-OPEN Architecture) system by using a real time ExTR "multitask" (multiprogram) executive allows flexibility for the Cyber Physical Systems by integrating new functions the basic functions  ... 
doi:10.24846/v24i4y201505 fatcat:rfjghoq4jbhlbm5elhsrsnv3ua

Research and design of digital magnet power supply controller for HALS

Z. X. Shao, H. Gao, H.Y. Zhang, P. Liu, G.W. Liu, X.K. Sun
2019 Journal of Physics, Conference Series  
A new controller architecture is proposed for the problems of the two controllers.  ...  This article describes the design and testing of high-stability power controllers and fast corrector power supply controllers.  ...  Acknowledgment Supported by "the Fundamental Research Funds for the Central Universities" (WK2310000064) and the Hefei Advanced Light Source Pre-research Project.  ... 
doi:10.1088/1742-6596/1350/1/012174 fatcat:kjd5hdflq5aadcytcme63wws7i

Dynamic Physical Systems: Energy Balances and Stability Issues [article]

M. De la Sen
2008 arXiv   pre-print
This paper discusses some links properties of operators with the well- known physical concepts of hyperstability, passivity, energy dissipativeness and conservativeness with positive realness properties  ...  Related properties include, for instance, Lyapunov´s stability /asymptotic stability, absolute stability (i.e. global Lyapunov´s asymptotic stability in the presence of nonlinear static devices belonging  ...  Positive Realness of the plant with a single pole at the origin) leads to absolute stability (global asymptotic Lyapunov´s stability) for any nonlinear device which only generates a zero output when its  ... 
arXiv:0803.3726v1 fatcat:ja67zmnt5jgctikuzjttudmudu

A new methodology to evaluate the performance of physics simulation engines in haptic virtual assembly

Germanico Gonzalez-Badillo, Hugo I. Medellin-Castillo, Theodore Lim, James M. Ritchie, Raymond C.W. Sung, Samir Garbaya
2014 Assembly Automation  
TCT, force feedback and physics simulation time are considered as the evaluation parameters. The real assembly was also performed for comparison purposes (Figure 9 (c)).  ...  Physics simulation engines According to Laurell (2008) five key points are identified in any PSE: contact detection, contact resolution, force calculation, integrating motion and the impact of real time  ... 
doi:10.1108/aa-05-2013-046 fatcat:4tr7blouhjhfvmzzrqr5zom44i

Some Conceptual Links between Dynamic Physical Systems and Operator Theory Issues Concerning Energy Balances and Stability

M. De la Sen
2005 Informatica  
Those concepts together with very close related ones are first examined from a physical point of view.  ...  This paper relates properties of operators with the well-known concepts of positive realness and passivity properties in dynamic systems and their associate transfer functions.  ...  Such Fourier transforms always exist for finite time since the corresponding integrals exist.  ... 
doi:10.15388/informatica.2005.106 fatcat:5olepfdw3bg6jhqvwkfd6rhlsm

Neurosurgery simulation using non-linear finite element modeling and haptic interaction

Huai-Ping Lee, Michel Audette, Grand R. Joldes, Andinet Enquobahrie, Kenneth H. Wong, David R. Holmes III
2012 Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling  
Furthermore, haptic integration presents an additional challenge with its requirement for a high update rate.  ...  Real-time surgical simulation is becoming an important component of surgical training.  ...  Recently, non-linear FEM using an explicit integration scheme has been applied to real-time applications with the help of recent GPUs, 5, 7, 8 but has not been integrated with more sophisticated contact  ... 
doi:10.1117/12.911987 pmid:24465116 pmcid:PMC3898833 dblp:conf/miigp/LeeAJE12 fatcat:xvfl3soqgngvhlijfrplbyntf4

Hardware-in-the-Loop Assessment Methods [chapter]

V. H. Nguyen, Q. T. Tran, E. Guillo-Sansano, P. Kotsampopoulos, C. Gavriluta, G. Lauss, T. I. Strasser, T. V. Jensen, K. Heussen, O. Gehrke, Y. Besanger, T. L. Nguyen (+3 others)
2020 European Guide to Power System Testing  
IN ON in Fig. 4 4 Lablink structure for real-time and non real-time CHIL applications with indicated sample rates simulation.  ...  Figure 4 shows the basic structure of the Lablink applicable for real-time and non real-time Fig. 4 for simulation setups related to investigations in the electrical domain.  ... 
doi:10.1007/978-3-030-42274-5_4 fatcat:gvrjprvajjajhi2whydqnamose

A Reflective Framework for Performance Management (REFORM) of Real-Time Hybrid Simulation

Amin Maghareh, Yuguang Fu, Herta Montoya, Johnny Condori, Zixin Wang, Shirley J. Dyke, Arturo Montoya
2020 Frontiers in Built Environment  
REFORM-I is verified and demonstrated through application to an expanded version of the benchmark control problem for real-time hybrid simulation.  ...  Currently, the lack of (1) a sufficiently integrated, adaptive, and reflective framework to ensure the safety, integrity, and coordinated evolution of a real-time hybrid simulation (RTHS) as it runs, and  ...  The run-time stability threshold, however, evaluates tracking performance, in real-time, at the interface between the physical and computational substructures.  ... 
doi:10.3389/fbuil.2020.568742 pmid:34159156 pmcid:PMC8216243 fatcat:s767a2526rcddiuvntujryy7i4

A Strategy for Improving Performance in Real Time Hybrid Testing [chapter]

Jonathan L. du Bois
2014 Dynamics of Civil Structures, Volume 4  
This paper is concerned with the challenges that emerge when trying to accommodate real-time simulations with highly nonlinear force characteristics in the physical substructure.  ...  A brief review of hybrid testing considerations is provided, including actuation hardware, controllers, and numerical time-integration schemes.  ...  for the real time dynamic substructuring).  ... 
doi:10.1007/978-3-319-04546-7_25 fatcat:sxdguha5nzhzrlinzx2i4u6yoq

Reviewing the book "Principles of Cyber-physical Systems" from a security perspective

Minghui Zhu, Peng Liu
2015 EAI Endorsed Transactions on Security and Safety  
This is a review of the book "Principles of Cyber-physical Systems" authored by Rajeev Alur and published by the MIT Press at 2015.  ...  Chapter 6 discusses Lyapunov stability and input-output stability where a particular emphasis is placed on linear time-invariant systems. Real-time Scheduling.  ...  A fundamental problem of real-time systems is the formalization of demands for processing times by different computational tasks and general policies for allocating processing times so that these demands  ... 
doi:10.4108/eai.5-10-2015.150480 fatcat:7juiak6ma5evlnubrwqmxwq6dq

ASDEX Upgrade CODAC overview

Gerhard Raupp, Karl Behler, Helmut Blank, Annedore Buhler, Reinhard Drube, Horst Eixenberger, Klaus Engelhardt, Christoph Fuchs, Horst Kollotzek, Andreas Lohs, Roland Merkel, Gregor Neu (+4 others)
2009 Fusion engineering and design  
Plant and CODAC systems base on workstations with fast serial real-time data sampling, industrial PCs and PLCs, connected through standardized networks for exchange of time and real-time process data,  ...  ASDEX Upgrade´s CODAC system integrates about 70 plant systems for diagnostics, magnets, heating and fuelling, vessel and protection for operation.  ...  Plasma shaping, fuelling, and higher integrated control loops for NTM stabilization etc. operate on timescales of many to many tens of milliseconds [9] .  ... 
doi:10.1016/j.fusengdes.2009.01.031 fatcat:c7bpvdiclja7vjbu52kgbwk3f4

The adjustment-stabilization method for constrained systems

Wen-biao Han, Xin-hao Liao
2007 Computer Physics Communications  
For constrained system which has several independent first integrals, we give a new stabilization method which named adjustment-stabilization method.  ...  It can stabilize all known constants of motion for a given dynamical system very well instead of the stabilization and post-stabilization methods which only conserves one of all first integrals.  ...  And I think about how to apply the adjustment-stabilization in the 3-body (or N -body) is another deeply interesting topic.  ... 
doi:10.1016/j.cpc.2007.05.008 fatcat:2lxb77omerdsjdbql46h234xme

IoT-Inspired Reliable Irregularity-Detection Framework for Education 4.0 and Industry 4.0

Anil Verma, Divya Anand, Aman Singh, Rishika Vij, Abdullah Alharbi, Majid Alshammari, Arturo Ortega Mansilla
2022 Electronics  
Real-time assessment, irregularity detection, and alert generation are some of the leading necessities of Education 4.0.  ...  The proposed study (1) recommends the use of IoT, Fog, and Cloud Computing, i.e., IFC technological integration for the implementation of Education 4.0.  ...  The physical layer is deployed in this framework for the collection of real-time data.  ... 
doi:10.3390/electronics11091436 fatcat:ax63m6hpajfchaakyi3rdq7fwe
« Previous Showing results 1 — 15 out of 679,307 results