17,863 Hits in 8.8 sec

Variable delays and message losses: Influence on the reliability of a control loop

Rony Ghostine, Jean-Marc Thiriet, Jean-François Aubry
2011 Reliability Engineering & System Safety  
The methodology proposed in this paper deals with an approach for the dependability evaluation of control systems, based on Monte-Carlo simulation, giving a contribution to the integration of automatic  ...  Reliability evaluation of such systems is not trivial, because generally classical methods do not take into account time and dynamic properties which are the bases of control systems.  ...  Superposition of variable delays and losses of the messages This paragraph studies the simultaneous influence of the variable delays and the losses of the messages.  ... 
doi:10.1016/j.ress.2010.08.003 fatcat:5fjd6fn33jbbjgif365yk2thua

Cyber-Physical Control over Wireless Sensor and Actuator Networks with Packet Loss [article]

Feng Xia, Xiangjie Kong, Zhenzhen Xu
2010 arXiv   pre-print
The focus of this chapter is on addressing the problem of network reliability. Specifically, we analyze the behavior of wireless channels via simulations based on a realistic link-layer model.  ...  These challenges make it difficult to fulfill the requirements of cyber-physical control in terms of reliability and real-time.  ...  Acknowledgments This work is partially supported by Natural Science Foundation of China under Grant No. 60903153.  ... 
arXiv:1011.3115v1 fatcat:ynzxnc7sejbr5jgfmyj7ttmfyy

How to Stop Disagreeing and Start Cooperatingin the Presence of Asymmetric Packet Loss

Oscar Morales-Ponce, Elad Schiller, Paolo Falcone
2018 Sensors  
Connected vehicles open a great variety of applications that will improve the mobility on the 2 of 16 roads, reduce the greenhouse gas emissions and maintain high safety standards on the roads.  ...  When there are no communication delays, our algorithm reaches agreement within one or two communication rounds (for the case of fully connected graphs and within the order of the diameter of the communication  ...  An input event can be either the receipt of a message or a periodic timer going off triggering p i to start a new iteration of the do forever loop.  ... 
doi:10.3390/s18041287 pmid:29690572 pmcid:PMC5948540 fatcat:sv2smhrfnnfgbpu4etslmkfhpu

Cooperative adaptive cruise control over unreliable networks: an observer-based approach to increase robustness to packet loss

Francesco Acciani, Paolo Frasca, Anton Stoorvogel, Elham Semsar-Kazerooni, Geert Heijenk
2018 2018 European Control Conference (ECC)  
A preliminary set of simulation results is presented, which confirms the interest of using an observer in combination with a local and cooperative digital controller.  ...  Abstract-Cooperative Adaptive Cruise Control (CACC) is nowadays a promising technique to increase highway throughput, safety and comfort for vehicles.  ...  On the other hand, the control input of the previous vehicle is a noise-free quantity, which suffers -when the communication channel is reliable -only from transmission delay; the latter is smaller than  ... 
doi:10.23919/ecc.2018.8550585 dblp:conf/eucc/AccianiFSSH18 fatcat:kxhijvvmv5fjvh3csoyod6wdqi

Latency and Packet Loss of an Interferred 802.15.4 Channel in an Industrial Environment

Jerker Delsing, Jens Eliasson, Viktor Leijon
2010 2010 Fourth International Conference on Sensor Technologies and Applications  
For the cases tested packet loses of less than 10% was obtained. Latency is shown to depend on channel access and will has a deterministic behaviour.  ...  This paper aims to provide some experimental data and theoretical justification on packet latency and packet loss for a wireless communication channel exposed to intentional radio interference.  ...  There still is a lot of doubt concerning the robustness and reliability of wireless communication in the industrial environment.  ... 
doi:10.1109/sensorcomm.2010.12 fatcat:6xamiif4gzcsrneng5afmte6ya

MAC-Layer Packet Loss Models for Wi-Fi Networks: A Survey

Carlos Alexandre Gouvea Da Silva, Carlos Marcelo Pedroso
2019 IEEE Access  
Packet loss occurs when one or more packets fail to reach their destination and can occur for a variety of reasons.  ...  In this paper, we provide an overview of the causes of packet loss and a comprehensive survey of the available models for packet loss in Wi-Fi networks.  ...  We could not find a systematic analysis of the importance of each input parameter and their influence on the packet loss rate.  ... 
doi:10.1109/access.2019.2958260 fatcat:6lkxjj32ljaulmxctrknajllqi

Distributed power flow loss minimization control for future grid

Kiyoshi Nakayama, Changhong Zhao, Lubomir F. Bic, Michael B. Dillencourt, Jack Brouwer
2014 International journal of circuit theory and applications  
We employ the notion of tie-sets that reduces the complexity of the power flow loss problem by dividing a power network into a set of loops that forms a linear vector space on which the power loss problem  ...  The DC-power loss at each link is defined as the product of resistance and the square of current that can be considered as a quadratic flow cost.  ...  ACKNOWLEDGEMENT The authors would like to thank Prof. Steven Low in EE and CMS at Caltech for his invaluable comments and suggestions.  ... 
doi:10.1002/cta.1999 fatcat:n4txsfvl3beepds4b5qghx3gga

Analysis of Tag Loss Ratio in dynamic RFID systems

J. Vales-Alonso, E. Egea-López, M.V. Bueno Delgado, J.J. Alcaraz-Espín
2010 International Journal of RF Technologies  
With the aim of validating the analysis predictions, we get simulation results, by means of a simulator. We evaluate a scenario similar to a real application, i.e. a mail control system based on RFID.  ...  The analysis is carried out for two families of protocols used as medium access control in RFID, Framed Slotted Aloha and non-persistent CSMA.  ...  Acknowledgements This work has been funded by the Spanish Ministerio de Innovación y Ciencia by the National project CALM TEC2010-21405-C02-02 (subprograma TCM) and also developed within the framework  ... 
doi:10.3233/rft-2010-005 fatcat:rlacpdk6pzdnzkn42izcr2wt2e

Minimum loss multiplicative routing metrics for wireless mesh networks

Diego Passos, Célio Vinicius N. Albuquerque, Miguel Elias M. Campista, Luís Henrique M. K. Costa, Otto Carlos M. B. Duarte
2010 Journal of Internet Services and Applications  
Results show that, in various scenarios, the network performance with the proposed multiplicative routing metrics has been improved in terms of routing stability, packet loss rate, end-to-end delay, and  ...  This work presents a study about the main routing metrics used in this kind of network, pointing out their virtues and limitations.  ...  Acknowledgements The authors would like to thank CAPES, CNPq, and FAPERJ for their support.  ... 
doi:10.1007/s13174-010-0015-6 fatcat:42z5r4ggs5frzdhh7o446dihee

A Framework for the Reliability Evaluation of Networked Control Systems

Rony Ghostine, Jean-Marc Thiriet, Jean-François Aubry, Michel Robert
2008 IFAC Proceedings Volumes  
this paper presents a framework to enable the analysis of the influence of the transmission faults on the reliability of a networked control system (NCS).  ...  The approach is composed of two parts: a modelling part in which all the basic components of a networked control system are modelled and a simulation part in which simulation is done on the models to evaluate  ...  NCS with three control loops We evaluate the reliability of the first loop by changing two parameters: the priority given to the first loop components and the perturbation fault rate.  ... 
doi:10.3182/20080706-5-kr-1001.01158 fatcat:gmxny33umfesdlakeyxnuwiwki

Wireless Network Design for Control Systems: A Survey [article]

Pangun Park, Sinem Coleri Ergen, Carlo Fischione, Chenyang Lu, Karl Henrik Johansson
2017 arXiv   pre-print
First, we discuss what we call the critical interactive variables including sampling period, message delay, message dropout, and network energy consumption.  ...  Moreover, we discuss the analysis and design of control systems taking into account the effect of the interactive variables on the control system performance.  ...  These variables together with the sampling period influence the stability of the closed-loop NCS and the energy consumption of the network.  ... 
arXiv:1708.07353v1 fatcat:wrnmrb6pevcuhk75rjldqxjpui

Feedback control goes wireless

Fabian Mager, Dominik Baumann, Romain Jacob, Lothar Thiele, Sebastian Trimpe, Marco Zimmerling
2019 Proceedings of the 10th ACM/IEEE International Conference on Cyber-Physical Systems - ICCPS '19  
This paper presents a wireless embedded system that tames imperfections impairing control performance (e.g., jitter and message loss), and a control design that exploits the essential properties of this  ...  Using experiments on a cyber-physical testbed with 20 wireless nodes and multiple cart-pole systems, we are the first to demonstrate and evaluate feedback control and coordination over wireless multi-hop  ...  ACKNOWLEDGMENTS We thank Harsoveet Singh and Felix Grimminger for their help with the cyber-physical testbed, and the TEC group at ETH Zurich for the design of the DPP platform and making it available  ... 
doi:10.1145/3302509.3311046 dblp:conf/iccps/MagerBJTTZ19 fatcat:bbdeyvkqsrhvbhgyjrdelkczem

Data Fusion to Develop a Driver Drowsiness Detection System with Robustness to Signal Loss

Sajjad Samiee, Shahram Azadi, Reza Kazemi, Ali Nahvi, Arno Eichberger
2014 Sensors  
This study proposes a drowsiness detection approach based on the combination of several different detection methods, with robustness to the input signal loss.  ...  Although the impact of the proposed system on the improvement of the detection accuracy is not remarkable, the results indicate the main advantages of the system are the reliability of the detections and  ...  Acknowledgments The authors want to thank all the drivers that participated in the tests and all people in the virtual laboratory of K.N. Toosi University of Technology who helped us doing the tests.  ... 
doi:10.3390/s140917832 pmid:25256113 pmcid:PMC4208253 fatcat:b4obrbj2pzf6fks4nqo4cus4fq

Optimisation of supplier selection with Taguchi loss function, analytic network process, and multi-choice goal programming

Aries Susanty, Ardian Bagus Putranto, Ferry Jie
2014 International Journal of Agile Systems and Management  
This study proposed an integrated method of the Taguchi loss function, ANP, and MCGP to select the best supplier.  ...  Then the 19 of sub-criteria are incorporated into the Taguchi loss functions to estimate the total loss.  ...  Supplier selection is one of the most crucial components of the purchasing function for a company (Lopez, 2007) because qualified and reliable supplier is a key element and a good source for a buyer  ... 
doi:10.1504/ijasm.2014.061454 fatcat:dvr52amlcfgwznffkjdqogi52q

An origin state method for communication constrained cooperative localization with robustness to packet loss

Jeffrey M. Walls, Ryan M. Eustice
2014 The international journal of robotics research  
The server (blue) fuses its local observations and adds delayed-state poses at each time-oflaunch (TOL) (the blue circles).  ...  This paper reports on an exact, real-time solution for server-client cooperative localization over a faulty and extremely bandwidth-limited underwater communication channel.  ...  The representation of the delayed-state collection is termed the pose-graph (Fig. 4) . Nodes in the graph express delayed-state variables while edges encode dependencies between nodes.  ... 
doi:10.1177/0278364914532390 fatcat:kheuanftungfjmxznec6ssnz4i
« Previous Showing results 1 — 15 out of 17,863 results