نتایج جستجو برای: network control system ncs

تعداد نتایج: 3694468  

2016
Marco Caselli

“Networked control system” (NCS) is an umbrella term encompassing a broad variety of infrastructures such as industrial control systems (ICSs) and building automation systems (BASs). Nowadays, all these infrastructures play an important role in several aspects of our daily life, from managing essential services such as energy and water (e.g., critical infrastructures) to monitoring the increasi...

Journal: :Eur. J. Control 2005
Paul G. Otanez

The paper under discussion [12] presents the analytical results underlying the authors’ design of a networked control system (NCS) operating over a cellular network. Their formulation fits the common framework [7, 14], in which there are transmission delays present in the sensor/controller and controller/actuator paths. One key difference between this work and existing literature relates to the...

Journal: :تحقیقات نوین در برق 0
وحید انتظام vahid entezam محسن صنیعی mohsen saniei

abstract: in this paper a control scheme for grid-connected operation mode and the island state of distributed generation is presented. in normal conditions, every inverter dg system in micro-grids to supply a preset power, normally operate in a constant current control mode. when micro-grids removed from the network, dg inverter of each system must recognize the island and change position to v...

2007
Xilan Tian Xuesong Wang Yuhu Cheng

This paper mainly deals with the controller design for a class of networked control system (NCS) with the presence of networkinduced delay and data packet dropout. Aiming at the stochastic and time-varying characteristics of delay and dropout, a NCS model with uncertain linear parameters was established by converting the uncertainties of delay and dropout into the uncertainties of the coefficie...

2006
Feiyue HE Xianzhong DUAN

A novel hydroturbine governor scheme based on networked control system (NCS) is proposed. The key problem of the scheme rest with the time delay existing in the data communication in NCS as the time delay may be a detriment to governor system stability and may degrade system robustness. In order to guarantee the governor system stable with time delay, the uncertain delay model is modeled as mul...

2001
Brian D. Davison

NCS (Network and Cache Simulator) is an HTTP trace-driven discrete event simulator of network and caching activity. It is highly parameterized for maximal compatibility with previous caching and network simulations. In granularity, it resides between the high-level caching-only simulators prominant in much Web caching research, and the detailed simulators of networking protocols and traffic. In...

1999
Feng-Li Lian James R. Moyne Dawn M. Tilbury

1 Introduction The traditional communication architecture for control systems is point-to-point, which has been successfully implemented in industry for decades. However, expanding physical setups and functionality push the limits of the point-to-point architecture. Hence, a traditional centralized point-to-point control system is no longer suitable to meet new requirements , such as modularity...

2012
J. Martinez M. A. Sanchez-Garcia E. Calleja

Text IIINitride nanocolumns (III-N NCs) are the subject of intense research since the past decade because of their unique properties and potential electronic and optoelectronic applications. NCs are usually grown on Si(111), Si (100), SiC, and sapphire substrates by a self-assembly process using plasma-assisted molecular beam epitaxy [1-3]. Unlike continuous layers, NCs accommodate the lattice-...

Journal: :Int. J. Systems Science 2008
Ye Yang Yongji Wang Shuang-Hua Yang

This paper discusses the compensation of the transmission delay in a networked control system (NCS) with a state feedback, which possesses a randomly varying transmission delay and uncertain process parameters. The compensation is implemented by using a buffer in the actuator node and a state estimator in the controller node. A Linear Matrix Inequality (LMI) based sufficient condition for the s...

2005
Ye Yang Yongji Wang Shuang-Hua Yang

This paper discusses the compensation of the transmission delay in a networked state feedback control system (NCS), which possess a randomly varying transmission delay and uncertain process parameters. The compensation is implemented by using a buffer in the actuator node and a state estimator in the controller node. A Linear Matrix Inequality (LMI) based sufficient condition for the stability ...

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