نتایج جستجو برای: network control system ncs

تعداد نتایج: 3694468  

2017
Rony Ghostine Jean-Marc Thiriet Jean-François Aubry

The validation of network systems is mandatory to guarantee the dependability levels, that international standard impose in many safety-critical applications. This article presents a framework for the dependability evaluation of a networked control system (NCS) taking into account the network behaviour when transition faults occurs. CAN-based systems are studied and a proposed method is describ...

2009
Eloy Garcia Panos J. Antsaklis

In this paper, discrete-time Model-Based Networked Control Systems (MB-NCS) are studied. A lifting process is applied to the original MB-NCS configuration resulting in a Linear Time-Invariant (LTI) system. Necessary and sufficient conditions are given for the asymptotic stability of the system with instantaneous feedback in terms of h, the periodic update constant, and in terms of h and τ for t...

2003
Michael S. Branicky Vincenzo Liberatore Stephen M. Phillips

We provide a general framework for networked control systems (NCSs) and review previous theoretical results for NCS co-design. We present experimental studies of control and feedback scheduling of NCSs, consisting of dynamic system simulations for the control agents and environment and packet-level network simulations for the communications. To this end, we have extended the ns-2 release in ord...

Journal: :Iet Communications 2022

The authors’ work deals with modelling coloured Petri nets (CPN) of network controlled systems (NCS) and exposes a proposal sensor fault detection prevention mechanism. In NCS, the must be viewed as part system not just means communication. For this, two issues considered. first consists adapting control diagnostic laws to performance network. second is guarantee system. Each loop containing vu...

2011
Kun Liu Emilia Fridman

This paper presents a new stability and L2-gain analysis of linear Networked Control Systems (NCS). The new method is inspired by discontinuous Lyapunov functions that were introduced by Naghshtabrizi et al. (Syst. Control Lett. 2008; 57:378–385; Proceedings 26th American Control Conference, New York, U.S.A., July 2007) in the framework of impulsive system representation. Most of the existing w...

2011
Oscar Esquivel-Flores Héctor Benítez-Pérez

Nowadays, industry has successfully used Network Control Systems (NCS) therefore several lines of research have arisen. A NCS is a current application of a Real-Time Distributed Systems (RTDS), composed of a number of nodes capable of developing a complete control process. In this systems several nodes exchange information through a communication network to achieve specific control goals, never...

2006
Huosheng Hu Minrui Fei Jun Yi

Abstract: In the networked control system (NCS), the uncertain network-induced delay and nonlinear controlled object are the main problems, because they can degrade the performance of the control system and even destabilize it. In this paper, a class of uncertain and nonlinear networked control systems is discussed and its sufficient condition for the robust asymptotic stability is presented. F...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم 1391

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...

2015
Li Wei

Based on discrete event-triggered communication scheme (DETCS), this paper is concerned with the satisfactory H ! / H 2 event-triggered fault-tolerant control problem for networked control system (NCS) with α -safety degree and actuator saturation constraint from the perspective of improving satisfaction of fault-tolerant control and saving network resource. Firstly, the closed-loop NCS model w...

Journal: :International journal of system dynamics applications 2022

By the second decade of 21st century, there has been a multi-faceted technological development in field networked control system (NCS). This progression NCS not only revealed its significant applications various areas but also unveiled difficulties associated with it that hampered operations system. Network-induced delays are issues promote many other like packet dropout and brevity bandwidth u...

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