Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
We propose a method to control Packet-In messages in OpenFlow switches for reducing CPU and network utilization of switches and controllers. In OpenFlow network, controllers setup flow entries to switches in response to Packet-In messages from switches. When a host suddenly starts to send many packets of a flow without any negotiation in advance, like a video stream on UDP, the control traffic and...
The paper develops a heuristic optimization algorithm for automated vehicles (equipped with cooperative adaptive cruise control CACC systems) at uncontrolled intersections using a game theory framework. The proposed system models the automated vehicles as reactive agents interacting and collaborating with the intersection controller (manager agent) to minimize the total delay. The system is evaluated...
The tuning of the voltage regulation controller of the synchronous co-ordinate based Linear Quadratic Gaussian (LQG) phase voltage control for the single-phase customer-end converter in low-voltage direct current (LVDC) distribution network is carried out using internal model control (IMC) approach. The principle of the regulation controller can be categorized as the gain scheduling controller that...
This paper focuses on the absolute stability of a new class of Takagi-Sugeno (T-S) fuzzy Lurie control systems with time-delay and time-variant uncertainties in the state as well as the nonlinearity functions. Based on Lyapunov-Krasovskii functional (LKF) together with linear matrix inequality (LMI) approach, a novel delay-dependent absolute stability criterion is derived. In the end, a numerical...
Systems with tightly interacting computational (cyber) units and physical systems are generally referred to as cyber-physical systems. They involve an interplay between embedded systems, control theory, real-time systems and software engineering. A very good example of cyber-physical systems design arises in the context of automotive architectures and software. Modern high-end cars have 50–100 processors...
In this paper, the scheduling problem of the network with limited bandwidth is considered. In order to improve the network quality of service and the quality of control simultaneously, an intelligent feedback scheduling method is proposed. The scheduler reschedules the priority, the sampling period, and the output threshold concurrently according to the control authority of each node, which is calculated...
In this paper, we described time synchronization performances with Precise Time Protocol (PTP). The synchronization experiments between a master clock and slave clocks were performed for two cases, that is, one with direct connection and the other with switches. From the experiments, the followings were observed. In the case of direct connection, actual and average offsets between the master and the...
We examine the problem of computing the worst-case first-to-first information propagation delay through a sequence of fixed-priority periodic tasks with different periods. This propagation delay is the span of time from the moment information becomes available until the first time the final task in the sequence produces an output that uses this (or more recent) input. We consider task systems in which...
In this paper, the problem of impulsive synchronization of a kind of generalized complex dynamical systems with delay and derivative coupling is investigated. Both the communication delay and derivative coupling, which provide more information about the complex dynamical systems, are considered. Based on a new Lyapunov function and impulsive stability technique that is used to play an important role...
This paper investigates robust stability of reset control systems with both uncertainties and transmission delays. Firstly, a generalized Lyapunov-Krasovskii theorem is proven. Secondly, the technique of parameter-dependent full-rank right annihilator of matrices is used to deal with the uncertain reset time instants caused by output matrix uncertainties. Based on this, several necessary and sufficient...
Considering the different time that platoon reaches downstream intersection, this paper proposes corresponding stop and delay coordinated control models for under-saturated and over-saturated traffic conditions. With the cumulative arrival-departure diagrams, uniform stop and delay models for under-saturated and over-saturated traffic conditions are proved to be consistent and accurate by formula...
This note investigates the modeling and guaranteed cost control for a class of networked control systems (NCSs) with random Markov delays. The delay processes in the sensor-to-controller and controller-to-sensor are modeled as two Markov chains and a jump linear system model is established. By using the Lyapunov theory and the linear matrix inequality (LMI) technique, the sufficient condition for...
Dynamical behavior of neutral neural networks with distributed delays is studied by employing suitable Lyapunov functionals, delay-dependent criteria to ensure local and global asymptotic stability of the equilibrium of the neural networks. Our results are applied to classical neutral neural networks with time delay and some novel asymptotic stability criteria are also derived. The obtained conditions...
In this paper the bifurcation behavior of a TCP fluid flow model for Internet congestion control in Wireless Networks is investigated. These bifurcation behaviors may cause heavy oscillation of average queue length and induce network instability. An impulsive control method was proposed for controlling bifurcations in the Internet congestion control system. Simulation results show that the nonlinear...
Some analyses and researches are done about networked control systems (NCS) those are based on the new Smith predictor and internal model control (IMC) from the system structures in this paper. The research and simulation results show that the choice of strategy of the new Smith predictor is more flexible than internal model control, but the adjusting parameter of the internal model control is relatively...
FiReControl was a large-scale system-of-systems that commenced in 2004 and was expected to be complete by October 2009. In 2007, the Department for Communities and Local Government (the Department) contracted a prime Supplier to design, develop and install the complex computer system underpinning the project. However, the project was subject to a number of problems and delays and costs escalated over...
Smart grids are characterized by a dynamic nature in which distributed energy resources (DER's) changes internal states and availability over time. Distributed Energy Resources (DER's) and the distributed control system will thus be required to automatically configure itself to this dynamic behavior. This paper1 addresses communication and control challenges to achieve a plug'n'play type of DER management...
In order to maintain a small, stable backlog at the router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion, leading to backoffs by Transmission Control Protocol (TCP) flows. However, wireless losses may be misinterpreted as congestive losses and induce spurious backoffs. In this paper, we raise the basic question: Can AQM maintain a stable,...
This paper considers H∞ tracking control for a class of network-based T-S fuzzy systems with available asynchronous constraints on membership functions. Using a fuzzy controller associated with available sampled-data of both premise variables and feedback states, the network-based control system is equivalent to an asynchronous T-S fuzzy system with an interval time-varying sawtooth delay. Notice...
In this paper, we consider several control loops sharing a common computation or communication resource. We assume the presence of a scheduler that approximates a fluid flow temporal partitioning of the resource among the different tasks. The goal of this paper is to expose the relation between the amount of resources allocated to each loop (Quality of Service) and the Quality of Control resulting...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.