نتایج جستجو برای: network control system ncs
تعداد نتایج: 3694468 فیلتر نتایج به سال:
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...
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...
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...
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...
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...
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...
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...
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...
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...
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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