نتایج جستجو برای: network control system ncs

تعداد نتایج: 3694468  

2011
Derek Riley Emeka Eyisi Jia Bai Xenofon D. Koutsoukos Yuan Xue Janos Sztipanovits

Cyber-physical systems, such groups of unmanned aerial vehicles, are often monitored and controlled by networked control systems (NCS). NCS are deployed in many environments subject to realistic, complex network interactions, so evaluation of NCS is crucial to ensuring that NCS function as intended. Given the varied nature of NCS, it is appropriate to use a heterogenous simulation environment t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1393

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

2013
Yi WANG Liren HE Ming SU

The network induced delay seriously effect the real-time and stability of CAN bus networked control systems. In this article, the structure of CAN bus NCS was analyzed, meanwhile studied the cause and integral part of delay. Then adopted TrueTime to build simulation model of CAN bus NCS. Discussed the effects of CAN bus network delay on performance of control system in three cases. Then drew a ...

Journal: :Computers & Industrial Engineering 2009
Yodyium Tipsuwan Suwatchai Kamonsantiroj Jirat Srisabye Prabhas Chongstitvattana

Applications of control systems on wireless networks have been widely utilized due to their mobility. However, the performances of these networked control systems (NCS) could be degraded and become unstable by network-induced delays. Existing dynamic bandwidth allocation methods for NCS assign bandwidth to each system with respect to different priorities in an ascending order. However, these NC...

2005
Jeremy Colandairaj George W. Irwin William G. Scanlon

With the recent interest in closed-loop control using standard wireless networks, there is need for accurate network modelling to study the dynamic interaction between the network protocol and the control system. We present a co-simulation tool, written as a C MEX S-function within Simulink, that emulates a networked control system (NCS) with mixed-traffic stations on an IEEE 802.11b wireless n...

2012
Wrastawa Ridwan Bambang Riyanto Trilaksono

Abstract: Networked Control Systems (NCS) is a control system in which the sensors, controllers, and the actuators are connected via communication network. The use of communication network will lead to intermittent losses or delays of the information and may decrease the performance and cause instability. This paper presents the design of H∞ state feedback controller for NCS. The NCS is modelle...

2010
Shurui Fan Fei Li Jie Li Hexu Sun

Network scheduling plays an important role in Network Control System (NCS). Focused on problems of the present scheduling of CAN bus, an improved Mixed Traffic Scheduling algorithm (MTS) was proposed on the base of the communication principle of network scheduling. The cut-off time was denoted after introducing the definitions about the scheduling. The NCS model for CAN Network was created then...

2007
Kun Ji Won-jong Kim

Abstract: In this paper, we develop a co-design methodology of stochastic optimal controllers and network parameters that optimizes the overall quality of control (QoC) in networked control systems (NCSs). A new dynamic model for NCSs is provided. The relationship between the system stability and performance and the sampling frequency is investigated, and the analysis of co-design of control an...

1996
Sung-Yong Park Salim Hariri Yoonhee Kim J. Stuart Harris Rajesh Yadav

Current advances in processor technology, and the rapid development of high speed networking technology, such as ATM, have made high performance network computing an attractive computing environment for large-scale High Performance Distributed Computing (HPDC) applications. However, due to the communications overhead at the host-network interface, most of the HPDC applications are not getting t...

Journal: :CoRR 2014
Zhuwei Wang Xiaodong Wang Lihan Liu

In this paper, the design of the optimal decentralized state-feedback controllers is considered for a wireless sensor and actuator network (WSAN) with stochastic network-induced delays and packet losses. In particular, taking advantage of multiple controllers, we model the WSAN as a wireless networked control system (NCS) with decentralized controllers, and then formulate the stochastic optimal...

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